WorldWideScience

Sample records for stored egg quality

  1. MATHEMATICAL MODELING OF ELECTRO TECHNOLOGICAL OZONIZATION OF EGG STORES OF POULTRY FARMS

    OpenAIRE

    Voloshin A. P.

    2016-01-01

    Sanitization of eggs is an essential way to fight bacteria, fungi and other microorganisms. Hatchability of eggs and the safety of day-old chicks are dependent on the quality of eggs processing. Leading scientists of our country have proved high efficacy of ozone application for processing of hatching eggs. To obtain a positive result by this method of sanitizing hatching eggs ozone, it is necessary to create a uniform concentration of ozone around the egg store volume. Decrease in ozone conc...

  2. Determining storage related egg quality changes via digital image ...

    African Journals Online (AJOL)

    Area and length measurements related to exterior and interior egg quality were determined by digital image analysis. In general, excluding the outer thin albumen area, all of the area measurements such as total egg content area and inner thick albumen area were larger in stored eggs than in fresh eggs (52.28 vs.

  3. Phenotypic correlations between egg weight and some egg quality ...

    African Journals Online (AJOL)

    Eggs were examined for both internal and external egg quality traits.Data obtained were subjected to one-way analysis of variance using the general linear procedure of SAS (2012). Differences in means were ranked using the Duncan's multiple Range test. Phenotypic correlations between egg weight and other egg quality ...

  4. Effects of dietary trace mineral sources and levels fed to layers in their second laying cycle on the quality of eggs stored at different temperatures and for different periods

    Directory of Open Access Journals (Sweden)

    ESPB Saldanha

    2010-12-01

    Full Text Available This study aimed at evaluating the effects of trace mineral levels and sources supplemented to diets fed to semi-heavy layers in their second laying cycle on the quality of eggs stored for 14 days at different temperatures. The experimental diets consisted of the inclusion of inorganic trace minerals (T1 - control: 100% ITM and five supplementation levels of organic trace minerals (carboaminophopho chelates (110, 100, 90, 80, and 70% OTM. Trace mineral inclusion levels (mg/kg feed were: T1: control - 100% ITM: Zn (54, Fe (54, Mn (72, Cu (10, I (0.61 Se (0.3; T2 - 110% OTM: Zn (59.4, Fe (59.4, Mn (79.2, Cu (11.88, I (1.21 Se (0.59; T3 - 100%: OTM: Zn (54, Fe (54, Mn (72, Cu (10.8, I (1.10 Se (0.54; T4 - 90% OTM: Zn (48.6, Fe (48.6, Mn (64.8, Cu (9.72, I (0.99 Se (0.49; T5 - 80% OTM: Zn (43.2, Fe (43.2, Mn (57.6, Cu (8.64, I (0.88, Se (0.43; T6 - 70% OTM: Zn (37.8, Fe (37.8, Mn (50.4, Cu (7.56, I (0.77 Se (0.38. A completely randomized experimental design in a split-plot arrangement with 60 treatments of four replicates each was applied. The combination of six diets versus storage temperature (room or under refrigeration was randomized in plots, whereas the sub-plots consisted of storage times (0, 3, 7, 10, and 14 days. Data were submitted to analysis of variance of a model in slip-plots in time using the software package SAS (2000 at 5% probability level. It was concluded that 70% OTM supplementation can be used with no damage to egg quality, independently from storage temperature or time. The quality of refrigerated eggs stored up to 14 days is better than those stored at room temperature.

  5. QUALITY ASSESSMENT OF EGGS PACKED UNDER MODIFIED ATMOSPHERE

    Directory of Open Access Journals (Sweden)

    Aline Giampietro-Ganeco

    2015-02-01

    Full Text Available Eggs are perishable foods and lose quality quickly if not stored properly. From the moment of posture to the marketing of egg, quality loss occurs through gas exchange and water through the pores of the shell with the external environment and thus, studies involving modified atmosphere packaging are extremely important. The aim of the present study is to assess the internal quality of eggs packed under modified atmosphere and stored at room temperature. Six hundred and twelve fresh commercial eggs from 38-week old Hisex White laying hens were used. The present study was conducted in a completely randomized experimental design in a 4 x 4 + 1 factorial arrangement [vacuum, vacuum with oxygen gas (O2 absorbent, vacuum with oxygen gas (O2 and carbon dioxide (CO2 absorbents, vacuum with oxygen gas (O2 absorbent and carbon dioxide (CO2 gas generator; storage times (7, 14, 21 and 28 days, control group (fresh eggs], with three repetitions (12 eggs each. The following factors were assessed: weight maintenance during storage; Haugh unit; color and yolk index. The modified atmosphere packaging maintained the weight of the eggs during a period of 28 days. Vacuum packaging with O2 absorbent and CO2 gas generator was more efficient in maintenance of egg quality, based on the values ​​of Haugh unit and yolk index. The luminosity of the yolk was preserved during the 28 storage days in all of the packaging types used. The vacuum packaging with O2 gas absorbent and CO2 gas generator provide an increase in internal egg quality.

  6. Bacterial contamination of stored table eggs from commercial ...

    African Journals Online (AJOL)

    %, 0.5% and 0%, respectively. At 53 week-old, sixty eggs/group were kept at room temperature (26-27.5oC), from which 8 eggs/group were selected on the day of lay and weekly for 4 weeks. One ml of vortex mixed albumin and yolk pooled from ...

  7. Haugh Unit: Gold Standard of Egg Quality

    Science.gov (United States)

    Rapidly determining shell egg quality in an objective manner is not an easy task. Candling is most often utilized as a quick method for assessing egg quality in a non-destructive manner, but it is a highly subjective method. As you have experienced this week, when candling, it is almost impossibl...

  8. Survival of Salmonella enterica serovar infantis on and within stored table eggs.

    Science.gov (United States)

    Lublin, Avishai; Maler, Ilana; Mechani, Sara; Pinto, Riky; Sela-Saldinger, Shlomo

    2015-02-01

    Contaminated table eggs are considered a primary source of foodborne salmonellosis globally. Recently, a single clone of Salmonella enterica serovar Infantis emerged in Israel and became the predominant serovar isolated in poultry. This clone is currently the most prevalent strain in poultry and is the leading cause of salmonellosis in humans. Because little is known regarding the potential transmission of this strain from contaminated eggs to humans, the objective of this study was to evaluate the ability of Salmonella Infantis to survive on the eggshell or within the egg during cold storage or at room temperature. Salmonella cells (5.7 log CFU per egg) were inoculated on the surface of 120 intact eggs or injected into the egg yolk (3.7 log CFU per egg) of another 120 eggs. Half of the eggs were stored at 5.5 ± 0.3°C and half at room temperature (25.5 ± 0.1°C) for up to 10 weeks. At both temperatures, the number of Salmonella cells on the shell declined by 2 log up to 4 weeks and remained constant thereafter. Yolk-inoculated Salmonella counts at cold storage declined by 1 log up to 4 weeks and remained constant, while room-temperature storage supported the growth of the pathogen to a level of 8 log CFU/ml of total egg content, as early as 4 weeks postinoculation. Examination of egg content following surface inoculation revealed the presence of Salmonella in a portion of the eggs at both temperatures up to 10 weeks, suggesting that this strain can also penetrate through the shell and survive within the egg. These findings imply that Salmonella enterica serovar Infantis is capable of survival both on the exterior and interior of table eggs and even multiply inside the egg at room temperature. Our findings support the need for prompt refrigeration to prevent Salmonella multiplication during storage of eggs at room temperature.

  9. Effects of egg shell quality and washing on Salmonella Infantis penetration.

    Science.gov (United States)

    Samiullah; Chousalkar, K K; Roberts, J R; Sexton, M; May, D; Kiermeier, A

    2013-07-15

    The vast majority of eggs in Australia are washed prior to packing to remove dirt and fecal material and to reduce the microbial contamination of the egg shell. The egg contents can be an ideal growth medium for microorganisms which can result in human illness if eggs are stored improperly and eaten raw or undercooked, and it is estimated that egg-related salmonellosis is costing Australia $44 million per year. Egg shell characteristics such as shell thickness, amount of cuticle present, and thickness of individual egg shell layers can affect the ease with which bacteria can penetrate the egg shell and washing could partially or completely remove the cuticle layer. The current study was conducted to investigate the effects of egg washing on cuticle cover and effects of egg shell quality and cuticle cover on Salmonella Infantis penetration of the egg shell. A higher incidence of unfavorable ultrastructural variables of the mammillary layer such as late fusion, type B bodies, type A bodies, poor cap quality, alignment, depression, erosion and cubics were recorded in Salmonella penetrated areas of egg shells. The influence of egg washing on the ability of Salmonella Infantis on the egg shell surface to enter the egg internal contents was also investigated using culture-based agar egg penetration and real-time qPCR based experiments. The results from the current study indicate that washing affected cuticle cover. There were no significant differences in Salmonella Infantis penetration of washed or unwashed eggs. Egg shell translucency may have effects on Salmonella Infantis penetration of the egg shell. The qPCR assay was more sensitive for detection of Salmonella Infantis from egg shell wash and internal contents than traditional microbiological methods. The agar egg and whole egg inoculation experiments indicated that Salmonella Infantis penetrated the egg shells. Egg washing not only can be highly effective at removing Salmonella Infantis from the egg shell surface

  10. The Strategic Management of Store Brand Perceived Quality

    Science.gov (United States)

    Yang, Defeng

    Store brand plays a vital role in the success of retailers. Perceived quality is one of important factors influencing consumers' store brand purchase intention. Store brand perceived quality is lower compared with objective quality or national brand. For this end, the purpose of this article is to examine how to manage store brand perceived quality in strategic level. This article firstly discusses how consumers evaluate product quality, and the theoretical background of the reason that store brand perceived quality is lower from the view of cue related theories. Then, consumers' store brand quality evaluation is explored. Finally, this article presents several strategic tactics to increase store brand perceived quality. These tactics include choosing store's name as store brand name, making large advertising investment, improving store brand product package, and strengthening the relationship with store brand product suppliers.

  11. Consumers' quality perception of national branded, national store branded, and imported store branded beef

    DEFF Research Database (Denmark)

    Banovic, Marija; Grunert, Klaus G.; Barreira, Maria Madalena

    2010-01-01

    This study investigated the differences in the consumers' quality perception of national branded, national store branded, and imported store branded beef. Partial Least Squares analysis is used for modelling the quality perception process. Results show that consumers perceived national branded...

  12. Quality Properties of Cakes Containing Gamma-Irradiated Egg White

    International Nuclear Information System (INIS)

    Lee, J.W.; Seo, J.H.; Ahn, H.J; Byun, M.W; Kim, Y.H.; Choi, J.M.; Yook, H.S.

    2003-01-01

    As a research on the practical approaches of gamma irradiation for the reduction of egg allergy, cakes including gamma-irradiated egg white were manufactured, and rheological characteristics and sensory qualities of the cakes were evaluated. Egg white was separated from whole egg and then gamma-irradiated with the absorbed dose of 10 or 20 kGy

  13. Effect of commercial diets on egg quality characteristics | Ayanwale ...

    African Journals Online (AJOL)

    The effect of four commercial feeds in Niger State Nigeria on egg quality characteristics was studied. The feed designated diets 1, 2, 3 and 4 were fed to Rhode Island Red (RIR) hens and their eggs were collected as from 38 weeks of age for 4 weeks. A total of 384 eggs were analysed for both external and internal egg ...

  14. Effect of genotype on egg quality characteristics of guinea fowl ...

    African Journals Online (AJOL)

    The genotypes were Pearl x Pearl (PL x PL), Black x Black (BL x BL) and Pearl x Black (PL x BL). ... The external and shell quality parameters measured were egg weight (EWGT), egg length (ELGT), egg width (EWDT), egg shape index (ESPI), shell weight (SWGT), and shell thickness (STKN) while the internal traits were ...

  15. Lipid oxidation in fresh and stored eggs enriched with dietary w 3 ...

    African Journals Online (AJOL)

    Two experiments were planned to study the influence of dietary fat sources (fish oil (FO) or sunflower oil (SO)) and dietary doses of -tocopheryl acetate (-TA) (0, 60 and 120 mg/kg of feed) and vitamin A (0 IU, 10000 IU and 20000 IU) on lipid oxidation of stored eggs in three stages of 0 or fresh, 1 and 2 months of storage time.

  16. Effect of Olive Leaf ( Powder on Laying Hens Performance, Egg Quality and Egg Yolk Cholesterol Levels

    Directory of Open Access Journals (Sweden)

    H. Cayan

    2015-04-01

    Full Text Available This experiment was conducted to measure the effects of olive leaf powder on performance, egg yield, egg quality and yolk cholesterol level of laying hens. A total of 120 Lohmann Brown laying hens of 22 weeks old were used in this experiment. The birds were fed on standard layer diets containing 0, 1%, 2%, or 3% olive leaf powder for 8 weeks. Egg weight and yield were recorded daily; feed intake weekly; egg quality and cholesterol content at the end of the trial. Olive leaf powder had no effect on feed intake, egg weight, egg yield and feed conversion ratio (p>0.05 while olive leaf powder increased final body weight of hens (p0.05. To conclude, olive leaf powder can be used for reducing egg yolk cholesterol content and egg yolk coloring agent in layer diets.

  17. Scrambled eggs: Proteomic portraits and novel biomarkers of egg quality in zebrafish (Danio rerio).

    Science.gov (United States)

    Yilmaz, Ozlem; Patinote, Amélie; Nguyen, Thao Vi; Com, Emmanuelle; Lavigne, Regis; Pineau, Charles; Sullivan, Craig V; Bobe, Julien

    2017-01-01

    Egg quality is a complex biological trait and a major determinant of reproductive fitness in all animals. This study delivered the first proteomic portraits of egg quality in zebrafish, a leading biomedical model for early development. Egg batches of good and poor quality, evidenced by embryo survival for 24 h, were sampled immediately after spawning and used to create pooled or replicated sample sets whose protein extracts were subjected to different levels of fractionation before liquid chromatography and tandem mass spectrometry. Obtained spectra were searched against a zebrafish proteome database and detected proteins were annotated, categorized and quantified based on normalized spectral counts. Manually curated and automated enrichment analyses revealed poor quality eggs to be deficient of proteins involved in protein synthesis and energy and lipid metabolism, and of some vitellogenin products and lectins, and to have a surfeit of proteins involved in endo-lysosomal activities, autophagy, and apoptosis, and of some oncogene products, lectins and egg envelope proteins. Results of pathway and network analyses suggest that this aberrant proteomic profile results from failure of oocytes giving rise to poor quality eggs to properly transit through final maturation, and implicated Wnt signaling in the etiology of this defect. Quantitative comparisons of abundant proteins in good versus poor quality eggs revealed 17 candidate egg quality markers. Thus, the zebrafish egg proteome is clearly linked to embryo developmental potential, a phenomenon that begs further investigation to elucidate the root causes of poor egg quality, presently a serious and intractable problem in livestock and human reproductive medicine.

  18. Scrambled eggs: Proteomic portraits and novel biomarkers of egg quality in zebrafish (Danio rerio)

    OpenAIRE

    Yilmaz, Ozlem; Patinote, Amélie; Nguyen, Thao Vi; Com, Emmanuelle; Lavigne, Regis; Pineau, Charles; Sullivan, Craig V.; Bobe, Julien

    2017-01-01

    Egg quality is a complex biological trait and a major determinant of reproductive fitness in all animals. This study delivered the first proteomic portraits of egg quality in zebrafish, a leading biomedical model for early development. Egg batches of good and poor quality, evidenced by embryo survival for 24 h, were sampled immediately after spawning and used to create pooled or replicated sample sets whose protein extracts were subjected to different levels of fractionation before liquid chr...

  19. Biological control of Indianmeal moth (Lepidoptera: Pyralidae) on finished stored products using egg and larval parasitoids.

    Science.gov (United States)

    Grieshop, Matthew J; Flinn, Paul W; Nechols, James R

    2006-08-01

    Biological control using hymenopteran parasitoids presents an attractive alternative to insecticides for reducing infestations and damage from the Indianmeal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae), in retail and warehouse environments. We examined the potential for using combinations of the egg parasitoid Trichogramma deion Riley (Hymenoptera: Trichogrammatidae), and the larval parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae) for preventing infestations of P. interpunctella in coarse-ground cornmeal as well as the influence of packaging on parasitoid effectiveness. Treatments included one or both parasitoids and either cornmeal infested with P. interpunctella eggs or eggs deposited on the surface of plastic bags containing cornmeal. H. hebetor had a significant impact on the number of live P. interpunctella, suppressing populations by approximately 71% in both unbagged and bagged cornmeal. In contrast, T. deion did not suppress P. interpunctella in unbagged cornmeal. However, when released on bagged cornmeal, T. deion significantly increased the level of pest suppression (87%) over bagging alone (15%). When H. hebetor was added to bagged cornmeal, there was a significant reduction of live P. interpunctella compared with the control (70.6%), with a further reduction observed when T. deion was added (96.7%). These findings suggest that, in most situations, a combined release of both T. deion and H. hebetor would have the greatest impact; because even though packaging may protect most of the stored products, there are usually areas in the storage landscape where poor sanitation is present.

  20. Microbial quality and prevalence of Salmonella and Listeria in eggs

    Directory of Open Access Journals (Sweden)

    Manijeh Mahdavi

    2012-01-01

    Full Text Available Aims: This study was undertaken to determine the microbial quality and the prevalence of Salmonella and Listeria in table eggs in Isfahan, Iran. Materials and Methods: A total of 525 samples were randomly collected from various shops in Isfahan, Iran. Microbial quality of eggs evaluated by coliform count and total bacterial viable counts. Also, detection of Listeria and Salmonella in egg contents and on eggs shells was performed. Results: The mean of total viable bacteria and coliform counts in the egg contents were 3.95 × 10 4 CFU/g and 4.94 × 10 3 CFU/g, respectively. Salmonella and Listeria were not found on the shell or content of eggs. Enterobacteriaceae families were found in 357 of 525 (68.28% and 276 of 525 (52.44% of egg shell and egg content samples, respectively. Moreover, Pseudomonas aeruginosa was isolated from 175 (33.41% and 144 (25.37% of egg shell and egg content, respectively. The isolated Enterobacteriaceae were included: Enterobacter aerogenes, Escherichia coli, Klebsiella pneumoniae, Buttiauxella agrestis, Cedecea lapagei, Cedecea davisae and Erwinia herbicola. Conclusion: The findings of the present study indicate although Salmonella and Listeria were not found in egg samples; however, there is an urgent need to improve the hygienic level of consumed eggs.

  1. Scrambled eggs: Proteomic portraits and novel biomarkers of egg quality in zebrafish (Danio rerio.

    Directory of Open Access Journals (Sweden)

    Ozlem Yilmaz

    Full Text Available Egg quality is a complex biological trait and a major determinant of reproductive fitness in all animals. This study delivered the first proteomic portraits of egg quality in zebrafish, a leading biomedical model for early development. Egg batches of good and poor quality, evidenced by embryo survival for 24 h, were sampled immediately after spawning and used to create pooled or replicated sample sets whose protein extracts were subjected to different levels of fractionation before liquid chromatography and tandem mass spectrometry. Obtained spectra were searched against a zebrafish proteome database and detected proteins were annotated, categorized and quantified based on normalized spectral counts. Manually curated and automated enrichment analyses revealed poor quality eggs to be deficient of proteins involved in protein synthesis and energy and lipid metabolism, and of some vitellogenin products and lectins, and to have a surfeit of proteins involved in endo-lysosomal activities, autophagy, and apoptosis, and of some oncogene products, lectins and egg envelope proteins. Results of pathway and network analyses suggest that this aberrant proteomic profile results from failure of oocytes giving rise to poor quality eggs to properly transit through final maturation, and implicated Wnt signaling in the etiology of this defect. Quantitative comparisons of abundant proteins in good versus poor quality eggs revealed 17 candidate egg quality markers. Thus, the zebrafish egg proteome is clearly linked to embryo developmental potential, a phenomenon that begs further investigation to elucidate the root causes of poor egg quality, presently a serious and intractable problem in livestock and human reproductive medicine.

  2. Effect of dietary organic selenium and zinc on the internal egg quality of quail eggs for different periods and under different temperatures

    Directory of Open Access Journals (Sweden)

    IB Fernandez

    2011-03-01

    Full Text Available The objective of this study was to evaluate the internal quality of eggs of Japanese quails fed diets supplemented with chelated selenium and zinc. The experiment was carried out for 120 days, and 144 birds were divided in random blocks into four treatments (control; 0.3 ppm Se; 60 ppm Zn and 0.3 ppm Se + 60 ppm Zn. Ten, 14, 18, and 22 weeks after the beginning of lay, eggs were collected and stored under two different temperatures (environmental temperature or refrigeration and for 10, 20, and 30 days. Eggs were analyzed for: Haugh units (HU, albumen height (AH, yolk index (YI, and albumen index (AI. Parameters were only statistically influenced by the interaction between dietary treatment and storage time. It was concluded that the addition of organic Se and Zn influenced internal egg quality when eggs were stored up to 20 days, independently of storage temperature, suggesting that the combined supplementation of organic Se and Zn improve internal egg quality and extend egg shelf life.

  3. Quality of foraging material and the effect on hens feed intake, egg production and - quality

    DEFF Research Database (Denmark)

    Steenfeldt, Sanna; Hammershøj, Marianne

    2010-01-01

    In a project with organic egg laying hens, the effect of different kind of foraging material was studied on feed intake, egg-production and -quality. Udgivelsesdato: August......In a project with organic egg laying hens, the effect of different kind of foraging material was studied on feed intake, egg-production and -quality. Udgivelsesdato: August...

  4. The table eggs and their quality in small-scale breeding

    Directory of Open Access Journals (Sweden)

    Mária Angelovičová

    2015-12-01

    Full Text Available The purpose this study was to investigate quality of the table eggs, their damage and soiling in various age of the laying hens (47-62 weeks during the second phase of the laying cycle. The object of the research was table eggs, egg white, egg shell, damage and soiling of the egg shell. The eggs were of the final laying hybrid ISA Brown reared in the non-cage system with deep litter and free range at small-scale breeding. In the breeding system with free range at small-scale conditions were secured requirements for laying hens in accordance with welfare principles. The eggs were collected each day at 4:00 pm. Weights of egg and egg shell samples of were measured on scales type KERN 440-35N. A white weight was calculated. Damage and soiling of eggs were investigated under the desk lamp lighting up to 100 W bulb. Statistical evaluation of the results was carried out in the program system SAS. From the existing conclusions of the various scientific and professional published works, it is known that both quality and safety are interrelated. In many works are the risk factors referred together as the quality standards. We found an important fact in assessing the trend of values of the egg shell weight, depending on the age of laying hens. Based on this fact, it can be assumed that the values of egg shell weight were not directly related to egg weight and egg white weight. It follows that the egg shell weight must be assessed comprehensively, and account must be taken of other factors. For the characteristics of the deformed egg shape has been one pc, representing 3.33% of the samples taken for analysis of eggs at 53 weeks of age of the total sampled eggs. In the following 56 weeks of age hens laying eggs there was not a deformed shape. The next subsequent sampling 59 weeks of age laying hens were recorded two pcs of eggs with deformed shape, i.e. 6.67%. At the last sampling of eggs at age 62 weeks, the number of eggs with deformed shape increased to

  5. Effect of ultrasonic treatment on reduction of Esherichia coli ATCC 25922 and egg quality parameters in experimentally contaminated hens' shell eggs.

    Science.gov (United States)

    Sert, Durmus; Aygun, Ali; Torlak, Emrah; Mercan, Emin

    2013-09-01

    In this study, hen eggs which were experimentally contaminated with Esherichia coli ATCC 25922 were used. Contaminated eggs were washed statically (S5 to S30; 0 kHz) and by ultrasonic waves (U5 to U30; 35 kHz) for given applications of time (5, 15 and 30 min), then the eggs were stored at 22°C for 14 days. Depending on the time of ultrasonic application, a significant increase in egg shell strength (P eggs which were washed by ultrasonic waves. Yolk width values of ultrasonic washed eggs diminished. E. coli was completely removed by 30 min of ultrasonic application. During storage E. coli growth was not detected on the eggs which were washed by ultrasonic waves except the eggs in U5 group (2.04 log CFU eggshell⁻¹) on the first day of storage. Depending on the time of ultrasonic application a significant increase in egg quality parameters (shell strength, albumen height, Haugh units, and yolk height) were observed. The application of ultrasound led to a significant reduction in E. coli numbers on egg shells. © 2013 Society of Chemical Industry.

  6. An isotopic assessment of protein from diet and endogenous stores: Effects on egg production and incubation behaviour of geese

    Science.gov (United States)

    Schmutz, J.A.; Hobson, K.A.; Morse, J.A.

    2006-01-01

    Little empirical information exists to assess to what degree geese use a capital versus income breeding strategy for investing nutrients into eggs. We used stable isotope methods to directly estimate the sources of protein deposited into egg yolks of Brent Branta bernicla and Emperor Geese Anser canagicus on the Yukon-Kuskokwim Delta, Alaska, USA. Approximately 59 and 45% of protein in egg yolks of Brent and Emperor Geese, respectively, was derived from exogenous sources (i.e. food plants on the local breeding area). Within clutches of Brent Goose eggs, first-laid eggs exhibited slightly higher contributions from endogenous reserves than last-laid eggs. This pattern was less clear for Emperor Geese, which may have been a consequence of possibly analyzing eggs that were laid by intraspecific nest parasites rather than by hosts. For both these species, individuals exhibited large variability in the percent contribution of exogenous versus endogenous stores to eggs, and future studies should identify ecological factors related to this variation. Those Emperor Geese in poor body condition incubated their nests less constantly, and based on δ13C values, they fed on terrestrial foods while off their nests. Although not a pure capital breeder, Emperor Geese used nutrients garnered on spring staging areas to fuel virtually all their own maintenance during incubation and to contribute half or more of the nutrients in eggs. These results highlight the ecological importance of these spring staging habitats to geese.

  7. QUALITY ASSESSMENT OF EGGS BROWN EGG LAYER HENS CREATION IN TWO SYSTEMS (CAGE AND NEST BED

    Directory of Open Access Journals (Sweden)

    J. Paula

    2015-02-01

    Full Text Available The research objective was to evaluate the effects on the eggs quality in two farming systems (bed + nest and cages for the laying hens brown-egg pullets were used 132 eggs, with six replicates for each treatment and 11 eggs each repetition, picked randomly from sheds both with 2000 DeKalb strain of laying hens housed in two sheds Brown, to create a nest bed + tubular feeders, the other one in cage system, all birds at approximately thirty weeks of age, which evaluated the following variables: weight of whole egg, egg weight without shell, albumen weight, yolk weight, yolk and albumen percentages, weight and thickness, color gem, the albumen pH and yolk, egg and classification according to RIISPOA. All collected data were analyzed by the statistical program SISVAR (2000 by Tukey test at 5% of probability. There were significant differences in the treatments studied in relation to the weight of whole egg, shelled egg weight, albumen%, skin thickness and coloration of the yolk, these results more significant to the breeding system in cages. However it can be concluded that in both systems when properly designed and managed can achieve good results and production performance of birds.

  8. Bioresonance method influencing the egg quality

    International Nuclear Information System (INIS)

    Avakova, A.; Kovalev, Yu.

    2009-01-01

    At 2 poultry yards with capacity of 30 thousand laying hens an experiment was undertaken to study the bioresonance effect on 18-week-old poultry (experimental poultry yard, EPY) to obtain eggs of high biological value by activating the assimilation by poultry of a microelement complex from food. At the EPY hens received a vitamin-mineral complex Lifepac senior (produced in France) treated with electromagnetic radiation. At the control poultry yard (CPY) this method was not used. The first egg collection was conducted from hens at the age of 28 weeks, the second one – at the age of 3-4 weeks and the third one – at the age of 52 weeks. The keeping and feeding conditions at the two poultry yards were the same. The contents of water, protein, fat in the eggs of CPY and EPY were practically the same, but the level of microelements in the EPY eggs was higher than in CPY eggs. It was observed so as to maintain high level of microelements in eggs it is required to a bioresonance effect throughout the egg laying period. So, the level of manganese in eggs of EPY and CPY at week 52 was 0.024 and 0.003 mg%, iron – 3.74 and 1.48 mg%, zinc – 1.23 and 0.87 mf%, copper – 0.078 and 0.069 mg%, respectively. The transition of microelements from food into eggs also was % to the control: iron – 2.55, manganese – 10.0, zinc – 1.44, copper – 1.35, potassium – 1.33, calcium – 1.05, phosphorus – 1.15, sodium – 1.16. Thus, the bioresonance method for keeping laying hens makes it possible to obtain food eggs of the desired chemical composition

  9. Egg Qualities and Performance Characteristics of Laying Chicken in ...

    African Journals Online (AJOL)

    Meanwhile, hens in partitioned battery cage (control) gave the best results. However, except for the egg weight, the housing systems had no significant effect (p>0.05) on other egg quality parameters measured. Partitioned (conventional) battery cage is still the best system of housing laying chickens, although extended ...

  10. Quality traits of eggs from autosexing Easter eggers

    Directory of Open Access Journals (Sweden)

    H. Lukanov

    2016-09-01

    Full Text Available Abstract. The main egg quality traits were investigated in two autosexing F1 Easter egger crosses. Partridge Araucana roosters were used as carriers of the eggshell biliverdin pigmentation gene. Maternal forms used for obtaining the two experimental crosses were high-producing layer hens carrying the sex-linked S and B genes. Experimental groups comprised F1 crosses of partridge Araucana roosters with white mutational Rhode Island hens or hens with barred colour mutation. The aim of the study was to investigated the quality traits of blue-green eggs produced by autosexing hens. The egg quality was evaluated at 38 weeks of age. Studied traits comprised egg weight (g, shape index, albumen index (AI, Haugh units (HU, yolk index (YI, yolk colour (Roche scale, 2 2 percentages of albumen, yolk and eggshell (%, eggshell surface (cm , eggshell density (mg/cm , average eggshell thickness (µm and eggshell colour. The group W was outlined with the highest egg weight – 61.03±0.47 g, and group A – with the lowest (50.91±0.32 g. The albumen and yolk quality was the best in group A, where albumen index was 0.075±0.002, Haugh units – 76.53±0.8 and yolk index – 0.491±0.009. The analysis of eggshell colour showed that eggs of group A were with the highest lightness (L* value (73.60±0.77, whereas eggs of groups W and AW had egg lightness of 60.45±0.53 and 61.11±0.55 (p<0.001 respectively. The shell colour index (SCI demonstrated a certain overlap of values in eggs with protoporphyrin and biliverdin taints. After introduction of a correction coefficient and recalculation of SCI*, the values of green eggs assumed a negative sign and could be distinguished from brown eggs.

  11. Effect of egg washing on the cuticle quality of brown and white table eggs.

    Science.gov (United States)

    Leleu, S; Messens, W; De Reu, K; De Preter, S; Herman, L; Heyndrickx, M; De Baerdemaeker, J; Michiels, C W; Bain, M

    2011-10-01

    Egg washing is currently not permitted within the European Union, with few exceptions. This is mainly because there are concerns that cuticle damage could occur during or after the washing process, as a result of a suboptimal operation. In this study, the cuticle coverage levels of 400 washed or unwashed eggs, derived from either a brown or a white egg-laying flock at the end of lay, were compared. The eggs from older hens inherently have poorer cuticle coverage and as a result arguably constitute a greater risk to consumer safety if they are then washed. Thus, the effects of the washing procedure used in this study on cuticle quality were tested under the worst-case scenario. A standard Swedish egg washing process was used. The cuticle coverage of the eggs was assessed by a colorimeter by quantifying the color difference before and after staining with Tartrazine and Green S. The cuticle of an additional 30 eggs from each of the four groups was then visually assessed by scanning electron microscopy. The staining characteristics of the cuticle varied greatly within each group of eggs and showed that the washing process did not lead to cuticle damage. Scanning electron microscopy confirmed that there was no irreversible damage to the cuticle of the washed eggs and that it was not possible to correctly assign the treatment (washed or not) based on a visual assessment. In conclusion, no evidence could be found to suggest that the washing procedure used in this investigation irreversibly changed the quality of the cuticle.

  12. Express quality control of chicken eggs by machine vision

    Science.gov (United States)

    Gorbunova, Elena V.; Chertov, Aleksandr N.; Peretyagin, Vladimir S.; Korotaev, Valery V.; Arbuzova, Evgeniia A.

    2017-06-01

    The urgency of the task of analyzing the foodstuffs quality is determined by the strategy for the formation of a healthy lifestyle and the rational nutrition of the world population. This applies to products, such as chicken eggs. In particular, it is necessary to control the chicken eggs quality at the farm production prior to incubation in order to eliminate the possible hereditary diseases, as well as high embryonic mortality and a sharp decrease in the quality of the bred young. Up to this day, in the market there are no objective instruments of contactless express quality control as analytical equipment that allow the high-precision quality examination of the chicken eggs, which is determined by the color parameters of the eggshell (color uniformity) and yolk of eggs, and by the presence in the eggshell of various defects (cracks, growths, wrinkles, dirty). All mentioned features are usually evaluated only visually (subjectively) with the help of normalized color standards and ovoscopes. Therefore, this work is devoted to the investigation of the application opportunities of contactless express control method with the help of technical vision to implement the chicken eggs' quality analysis. As a result of the studies, a prototype with the appropriate software was proposed. Experimental studies of this equipment on a representative sample of eggs from chickens of different breeds have been carried out (the total number of analyzed samples exceeds 300 pieces). The correctness of the color analysis was verified by spectrophotometric studies of the surface of the eggshell.

  13. Store brands’ purchase intention: Examining the role of perceived quality

    Directory of Open Access Journals (Sweden)

    Cristina Calvo-Porral

    2017-05-01

    Full Text Available Considering the increase of the store brand's market share globally, the present study addresses the following question: “Does the consumer product perceived quality influence store brands’ proneness?”; or in other words “Does product perceived quality influence store brands’ purchase intention?”, since perceived quality is a customer-based undertaken variable. The present study proposes and empirically tests a conceptual model of the influence of perceived product quality of store brands relative to perceived value and purchase intention. Structural Equation Modelling (SEM was developed on a sample of 439 consumers, distinguishing between consumers with high perceived quality (HPQ and low perceived quality (LPQ. Our findings highlight that store brands’ purchase intention is strongly influenced by confidence for both HPQ and LPQ customers, followed by product price. Additionally, our results suggest the moderating role of perceived quality on some of the proposed relationships. Store brand managers and retailers could develop market segmentation and perform marketing strategies based on customers’ perceived quality.

  14. EGG QUALITY OF CREOLE HENS REARED IN THE BACKYARD

    Directory of Open Access Journals (Sweden)

    Aureliano Juárez-Caratachea

    2009-09-01

    Full Text Available The egg quality from Creole backyard hens was determined by collecting samples from 11 municipalities from the central area of Michoacan State, Mexico. It was measured: egg weight (EW, longitude diameter (LD of the egg, transversal diameter (TD of the egg, shell weight (SW, shell thickness (ST, shell index (SI, white diameter (WD, yolk diameter (YD, white high (WH, yolk high (YH, air chamber high (ACH and Haugh units (HU. The averages obtained were: EW 50.7 g; LD 5.6 cm; TD 4.2 cm; SW 4.5 g.; ST 0.28 mm; SI 8.9 %; WD 10.0 cm; YD 4.5 cm; WH 6.3 mm; YH 1.6 cm; ACH 5.4 mm; HU 73.4, YP 12.1. In conclusion, the eggs of backyard hens were smaller than commercial eggs. However, the internal quality indicators suggested that backyard hen eggs have similar quality to that of commercial hens.

  15. Feed addition of curcumin to laying hens showed anticoccidial effect, and improved egg quality and animal health.

    Science.gov (United States)

    Galli, Gabriela M; Da Silva, Aleksandro S; Biazus, Angelisa H; Reis, João H; Boiago, Marcel M; Topazio, Josué P; Migliorini, Marcos J; Guarda, Naiara S; Moresco, Rafael N; Ourique, Aline F; Santos, Cayane G; Lopes, Leandro S; Baldissera, Matheus D; Stefani, Lenita M

    2018-01-31

    The aim of this study was to evaluate whether the addition of curcumin in the diet of commercial laying hens could have an anticoccidial action and improve egg quality. For this, 60 laying hens were divided into three groups: T0 (the control group); T30 and T50 (30 and 50 mg/kg of curcumin in the feed, respectively). Eggs recently laid were collected on days 14 and 21 of the experiment, and stored for 21 days. It was observed increased specific gravity and yolk index in stored eggs of the groups T30 and T50 compared to T0. The yolk color reduced in the eggs stored from groups T30 and T50 compared to T0. Moreover, TBARS levels were lower in fresh and stored eggs from groups T30 and T50. It was observed increased TAC levels in fresh eggs from groups T30 and T50 and in stored eggs from the group T50. The presence of curcumin was not detected by HPLC in the yolk and albumen. Seric levels of albumin and uric acid did not differ between groups, while seric levels of total proteins increased on day 21 on groups T30 and T50. Finally, it was observed a significant reduction on the number of oocysts in fecal samples on days 14 and 21 of T30 and T50 compared to T0. Based on these evidences, it is possible to conclude that the addition of curcumin in the diet of laying hens has an anticoccidial effect and improves egg quality. Copyright © 2018 Elsevier Ltd. All rights reserved.

  16. Quality-aware scheduling for key-value data stores

    CERN Document Server

    Xu, Chen

    2015-01-01

    This book comprehensively illustrates quality-ware scheduling in key-value stores. In addition, it provides scheduling strategies and a prototype framework of quality-aware scheduler as well as a demonstration of online applications. The book offers a rich blend of theory and practice which is suitable for students, researchers and practitioners interested in distributed systems, NoSQL key-value stores and scheduling.

  17. Egg detection and control of tribolium castaneum (Herbst) (Coleoptera : Tenebrionidae) in powdered stored food products

    International Nuclear Information System (INIS)

    Dotse, Raphael Djoe Nuseli

    2017-07-01

    For safety and shelf-stability of powdered food products, it is important to detect and deal with any infestation during processing. The focus of this study was to detect the presence of Tribolium castaneum (Herbst) (Coleopera: Tenebionidae) eggs in powdered food products, and where present, kill them using gamma irradiation. The study was carried out at the Radiation Entomology and Pest management Centre (REPMC), Ghana Atomic Energy Commission. Basic reproductive biology of T. castaneum in four different powdered food media (Wheat flour, Roasted corn powder, also known as ‘Tombrown’ powder, Cocoa powder and Fish powder) was studied. Seven (7) different stains (Bromocresol green, Malachite green, Carbol fuchsin, Basic fuchsin, Orange ‘G”, Gentian Violet and Crystal Violet) were evaluated for their ability to differentially stain T. castaneum eggs and background food particles using the American Association of Cereal Chemist, AACC (2000) staining technique. To control any egg infestation, the effect of gamma irradiation at 200Gy on egg hatchability was evaluated. Results indicate that egg production by T. casteneum within a three day period on Wheat flour, Cocoa powder and Tombrown was not significantly different but was significantly lower on fish powder (P = 0.255). Hatchability of T. castaneum eggs in the four food media was not significantly different (P = 0.046). Gamma irradiation at 200Gy was effective in controlling egg infestation by inhibiting hatchability. Bromocresol green and Malachite green differentially stained the eggs in all the four food products. The protocols for Bromocresol green and Malachite green are effective for detection of T. castaneum eggs in powdered foods and can be incorporated into production processes. Where insect eggs are detected and none of the processing steps can eliminate them, irradiation of the packaged products at 200Gy will kill any eggs and maintain the wholesomeness and safety of the product on the shelf

  18. Application of probiotic on egg production and egg quality of chukar ...

    African Journals Online (AJOL)

    ajl yemi

    2011-12-19

    Dec 19, 2011 ... the yolk color. This increase in shell thickness, shell weight and albumen weight were significant (P 0.05), though value was greater in probiotic treated birds. Egg production and quality are important determi- nations of the ...

  19. Effect of Different Levels of Surplus Date on Performance, Egg Quality and Blood Parameters in Laying Hens

    Directory of Open Access Journals (Sweden)

    S.J Hosseini Vashan

    2011-12-01

    Full Text Available One hundred forty-four 26-wk-old white Hy-Line layers (W-36 were fed commercial diets containing 0, 1.5, 3 and 5% surplus date for three period of 28 days each to study the effects of dietary surplus date on hen performance (egg production, egg weight, egg mass, feed intake, feed conversion ratio ‘FCR’ and body weight gain and egg quality parameters (Haugh unit score, yolk colour index, yolk index, egg shape, shell weight, shell thickness and density. The yolk of eggs extracted and cholesterol content were determined on one egg of each replicate hens in each period. Blood samples were collected in non-heparin zed tubes from six hens in each treatment through brachial vein at the end of experiment. Serum was separated after 8-10 hrs and was stored at – 20 oC for subsequent analysis. Hen performance (egg production, egg mass, feed intake, FCR and weight gain and egg quality parameters (Haugh unit score, yolk colour index, yolk index, egg shape, shell weight, shell thickness and density were not significantly different among treatments (P>0.05; However in all traits, the control group had numerically lower value, except egg weight that was significantly increased with supplementation of surplus date in diet. The dietary surplus date did not significantly affect egg cholesterol, ND and IBD titre, but the serum cholesterol was significantly reduced in hens fed diets contained 5% surplus date. This study suggested that the surplus date may be used up to 5% in the diet of laying hens to reduce blood cholesterol without any significant adverse effect on performance.

  20. Effect of nanosilicon dioxide on growth performance, egg quality, liver histopathology and concentration of calcium, phosphorus and silicon in egg, liver and bone in laying quails

    Science.gov (United States)

    Faryadi, Samira; Sheikhahmadi, Ardashir

    2017-11-01

    This experiment was conducted to evaluate the effects of different levels of nanosilicon dioxide (nSiO2) on performance, egg quality, liver histopathology and concentration of calcium (Ca), phosphorus and silicon (Si) in egg, liver and bone in laying quails. The experiment was administered using 60 laying quails at 16-26 weeks of age with five treatments [0 (control), 500, 1000, 2000 and 4000 mg nSiO2 per kg of diet] and four replicates in a completely randomized design. During the experiment, the amount of feed intake was recorded weekly and performance parameters were measured. During the last 3 days of the experiment, all of the eggs in each replicate were collected and egg quality parameters were measured. At the end of 26 weeks of age, the birds were sacrificed and blood samples were collected. Liver samples from each treatment were fixed in 10% buffered formalin for histopathological assessment. The right thigh bone and a portion of liver were inserted in plastic bags and stored at - 20. The results showed that nSiO2 supplementation significantly affected egg weight and egg mass ( P 0.05) by dietary treatments. In conclusion, the results indicated that dietary supplementation of nSiO2 could improve bone density and performance without any adverse effect on the health of laying quails.

  1. Quality characteristic of spray-drying egg white powders.

    Science.gov (United States)

    Ma, Shuang; Zhao, Songning; Zhang, Yan; Yu, Yiding; Liu, Jingbo; Xu, Menglei

    2013-10-01

    Spray drying is a useful method for developing egg process and utilization. The objective of this study was to evaluate effects on spray drying condition of egg white. The optimized conditions were spraying flow 22 mL/min, feeding temperature 39.8 °C and inlet-air temperature 178.2 °C. Results of sulfydryl (SH) groups measurement indicated conformation structure have changed resulting in protein molecule occur S-S crosslinking phenomenon when heating. It led to free SH content decreased during spray drying process. There was almost no change of differential scanning calorimetry between fresh egg white and spray-drying egg white powder (EWP). For a given protein, the apparent SH reactivity is in turn influenced by the physico-chemical characteristics of the reactant. The phenomenon illustrated the thermal denaturation of these proteins was unrelated to their free SH contents. Color measurement was used to study browning level. EWP in optimized conditions revealed insignificant brown stain. Swelling capacity and scanning electron micrograph both proved well quality characteristic of spray-drying EWP. Results suggested spray drying under the optimized conditions present suitable and alternative method for egg processing industrial implementation. Egg food industrialization needs new drying method to extend shelf-life. The purpose of the study was to provide optimal process of healthy and nutritional instant spray-drying EWP and study quality characteristic of spray-drying EWP.

  2. The impact of quality on store loyalty : A contingency approach

    NARCIS (Netherlands)

    Odekerken-Schroder, G; De Wulf, K; Kasper, H; Kleijnen, M; Hoekstra, J; Commandeur, H

    This study's prime interest is to assist retail managers in deciding where they are likely to get the greatest response to their expenditures on quality improvement. An empirical test involving 287 consumers reporting on a wide array of stores assesses whether the relationship between three quality

  3. Storage of Hatching Eggs : Effects of storage and early incubation conditions on egg characteristics, embryonic development, hatchability, and chicken quality

    NARCIS (Netherlands)

    Reijrink, I.A.M.

    2010-01-01

    Key words: egg storage, embryonic development, albumen quality, hatchability, chick quality

    It is well known that an increase in the storage duration increases incubation duration and decreases hatchability and chick quality. The negative effects of prolonged egg storage (> 7 days)

  4. Metabolic activity of boar semen stored in different extenders supplemented with ostrich egg yolk lipoproteins

    OpenAIRE

    Dziekońska Anna; Kinder Marek; Fraser Leyland; Strzeżek Jerzy; Kordan Władysław

    2017-01-01

    Introduction: The aim of this study was to evaluate the effect of lipoprotein fraction isolated from ostrich egg yolk (LPFo) on the metabolic activity of boar spermatozoa following liquid semen storage in different extenders and temperatures.

  5. Metabolic activity of boar semen stored in different extenders supplemented with ostrich egg yolk lipoproteins

    Directory of Open Access Journals (Sweden)

    Dziekońska Anna

    2017-03-01

    Full Text Available Introduction: The aim of this study was to evaluate the effect of lipoprotein fraction isolated from ostrich egg yolk (LPFo on the metabolic activity of boar spermatozoa following liquid semen storage in different extenders and temperatures.

  6. Viability of Ascaris suum eggs in stored raw and separated liquid slurry

    DEFF Research Database (Denmark)

    Katakam, Kiran Kumar; Roepstorff, Allan Knud; Popovic, Olga

    2013-01-01

    SUMMARY Separation of pig slurry into solid and liquid fractions is gaining importance as a way to manage increasing volumes of slurry. In contrast to solid manure and slurry, little is known about pathogen survival in separated liquid slurry. The viability of Ascaris suum eggs, a conservative...... indicator of fecal pollution, and its association with ammonia was investigated in separated liquid slurry in comparison with raw slurry. For this purpose nylon bags with 6000 eggs each were placed in 1 litre bottles containing one of the two fractions for 308 days at 5 °C or 25 °C. Initial analysis...... of helminth eggs in the separated liquid slurry revealed 47 Ascaris eggs per gramme. At 25 °C, egg viability declined to zero with a similar trend in both raw slurry and the separated liquid slurry by day 308, a time when at 5 °C 88% and 42% of the eggs were still viable in separated liquid slurry and raw...

  7. Effects of egg storage on hatchability, chick quality, performance and immunocompetence parameters of broiler chickens.

    Science.gov (United States)

    Goliomytis, Michael; Tsipouzian, Theofania; Hager-Theodorides, Ariadne L

    2015-09-01

    Pre-incubation egg storage is a necessity for the poultry industry. This study evaluated the effects of pre-incubation storage length of broiler eggs on hatchability, 1-day-old chick quality, subsequent performance, and immunocompetence. To this end, a total of 360 hatching eggs were stored for 4, 12, or 16 d prior to incubation. Hatchability and chick quality were assessed at hatch, and growth performance and immunocompetence parameters were assessed during a 35 d rearing period. Hatchability of set and fertile eggs, and embryonic mortality, were not affected by egg storage. On the contrary, 1-day-old chick BW and length were linearly negatively correlated with egg storage length (P-linearegg weight prior to setting was unaffected, and corrected chick length was positively affected by storage length. One-day-old chick Tona score, navel quality, and post-hatch growth performance (BW at 7 and 35 d, cumulative feed intake, and feed conversion ratio at 35 d) were unaffected by egg storage (P, P-linear>0.05). Lymphoid organ weights at 2 and 35 d, the titre of maternal anti-NDV antibodies, most of the thymocyte subpopulations defined by CD3, CD4, and CD8 cell surface expression in the thymus of 2-d-old chicks, cellular responses to the PHA skin test, humoral responses to primary SRBC, and NDV immunizations were also not influenced by length of storage (P, P-linear>0.05). On the contrary, the length of egg storage was found to negatively influence the abundance of CD3+CD4-CD8- thymocytes that represent the majority of γδ-T cells in the thymus of 2-day-old chicks, as well as the humoral response to booster NDV immunization of the birds. In brief, pre-incubation storage of broiler hatching eggs for up to 16 d did not affect most developmental and growth parameters investigated, except for BW and length at hatch. Egg storage was found to suppress some aspects of the immunocompetence of the birds, particularly aspects of acquired immunity. © 2015 Poultry Science

  8. Gamma radiation influence on internal quality factors of eggs

    International Nuclear Information System (INIS)

    Pombo, Carolina R.; Mano, Sergio B.

    2005-01-01

    Poultry egg is a fundamental item in the human diet due to its high nutritional value. Its treatment by irradiation in order to eliminate pathogenic bacteria has been authorized in the USA in 2000 limited to a dose of 3 kGy in contrast to the requirements of the Brazilian legislation that does not establish quantitative dose limits. However research on the sensory properties of irradiated eggs is still scarce in the literature. In this work, possible changes in the internal quality factors of eggs were investigated. The samples were irradiated with doses of 0, 0.5, 1.0, 1.5, 2.0 and 2.5 kGy at an average dose rate of 1.7 kGy/h in the research Cesium-137 irradiation facility at the Technological Center of the Army (CTEx) situated in Guaratiba, Rio de Janeiro (RJ). A total of 300 eggs sorted in 6 lots, one for each dose, were kept at room temperature being periodically inspected up to 20 days. The samples were analyzed for the following indicators of the internal quality of the eggs: Haugh unity, air chamber, yolk index, pH of the white and pH of the yolk. The results indicated that irradiation damages the structure of the white of the eggs reducing its consistency in addition to changing other parameters related to their internal quality. Therefore, it has been concluded that irradiation is not appropriate for the treatment of whole eggs in the conditions studied in this work. (author)

  9. Impacts of Limestone Multi-particle Size on Production Performance, Egg Shell Quality, and Egg Quality in Laying Hens

    Directory of Open Access Journals (Sweden)

    X. Y. Guo

    2012-06-01

    Full Text Available This experiment was conducted to evaluate the effects of single or multi-particle size limestone on the egg shell quality, egg production, egg quality and feed intake in laying hens. A total of 280 laying hens (ISA brown were used in this 10-wk trial. Laying hens were randomly assigned to 4 treatments with 14 replications per treatment and 5 adjacent cages as a replication (hens were caged individually. The experimental treatments were: i L, basal diet+10% large particle limestone; ii LS1, basal diet+8% large particle limestone+2% small particle limestone; iii LS2, basal diet+6% large particle limestone+4% small particle limestone; iv S, basal diet+10% small particle limestone. The egg production was unaffected by dietary treatments. The egg weight in S treatment was lighter than other treatments (p<0.05. The egg specific gravity in S treatment was lower than other treatments (p<0.05. The eggshell strength and eggshell thickness in S treatment were decreased when compared with other dietary treatments (p<0.05. The laying hens in LS1 and LS2 treatment had a higher average feed intake than the other two treatments (p<0.05. Collectively, the dietary multi-particle size limestone supplementation could be as efficient as large particle size limestone.

  10. Effect of Dietary Crude Protein and Methionine on Egg Production and Egg Quality of Laying Hens During Phase II

    Directory of Open Access Journals (Sweden)

    H Mohammadi Emarat

    2012-02-01

    Full Text Available An experiment was conducted to evaluate the effect of dietary crude protein and methionine levels on quality and quantity of egg production. Fifteen diets formulated with 3 levels of protein (13, 14 and 15% and 5 levels of methionine (0.25, 0.28, 0.31, 0.34 and 0.37% and fed to 420 birds in a 3×5 factorial arrangement. Each diet was randomly fed to 4 replicates of 7 birds each and fed for 3 periods of 4 weeks (50-62wks of age each. Egg number and mortality was recorded daily, whereas feed consumption determined at the end of each period. The increased in dietary protein significantly increased egg production from 54 to 59.4 %. Egg weight, egg mass and feed intake increased by 1.7 g, 3.4 g, and 2.8 g, respectively during the whole experimental period. As the dietary protein increased, feed conversion, egg component (as a percent of whale egg and egg albumin percent were improved. However, the egg breaking, specific gravity and eggshell were significantly decreased with increased dietary protein. The egg yolk percent was not influenced by dietary protein levels. The increased in dietary methionine from 0.25% to 0.37% caused the overall egg production, egg weight, egg mass, feed intake and egg component to improve by about 8.2%, 4g, 6.6g, 8.7g, and 6.0g, respectively. Feed conversion, specific gravity, egg breakage, egg shell, and egg yolk and albumin percent were not influenced by dietary methionine levels.

  11. Stores

    CERN Multimedia

    2004-01-01

    Following the introduction of Condensators, resistors and potentiometers from the Farnell electronic-catalogue into CERN Stores' catalogue, following products are now available: PRODUCT FAMILY GROUP SCEM Oscillators and quartz crystals 07.94.10 / 07.94.12 Diodes 08.51.14 / 08.51.54 Thyristors 08.51.60 / 08.51.66 Opto-electronics 08.52 Transistors 08.53 Integrated circuits 08.54 / 08.55 These articles can be procured in the same way as any other stores item, by completing a Material Request. N.B. Individual Farnell order codes can be used as keywords to facilitate searches in the CERN Stores Catalogue.

  12. Egg shell quality in Japanese quail: characteristics, heritabilities and genetic and phenotypic relationships.

    Science.gov (United States)

    Narinc, D; Aygun, A; Karaman, E; Aksoy, T

    2015-07-01

    The objective of the present study was to estimate heritabilities as well as genetic and phenotypic correlations for egg weight, specific gravity, shape index, shell ratio, egg shell strength, egg length, egg width and shell weight in Japanese quail eggs. External egg quality traits were measured on 5864 eggs of 934 female quails from a dam line selected for two generations. Within the Bayesian framework, using Gibbs Sampling algorithm, a multivariate animal model was applied to estimate heritabilities and genetic correlations for external egg quality traits. The heritability estimates for external egg quality traits were moderate to high and ranged from 0.29 to 0.81. The heritability estimates for egg and shell weight of 0.81 and 0.76 were fairly high. The genetic and phenotypic correlations between egg shell strength with specific gravity, shell ratio and shell weight ranging from 0.55 to 0.79 were relatively high. It can be concluded that it is possible to determine egg shell quality using the egg specific gravity values utilizing its high heritability and fairly high positive correlation with most of the egg shell quality traits. As a result, egg specific gravity may be the choice of selection criterion rather than other external egg traits for genetic improvement of egg shell quality in Japanese quails.

  13. Egg quality parameters and blood biochemical profile of six strains ...

    African Journals Online (AJOL)

    Six different poultry strains (Indigenous chicken, Broiler, Turkey, Geese, Duck and Guinea fowl) were studied under extensive system of management to investigate the effect of rearing system on their egg quality and the blood biochemical profile, respectively. Birds used for the study were obtained from four different ...

  14. Performance response and egg qualities of laying birds fed enzyme ...

    African Journals Online (AJOL)

    Theperformance response and egg qualities o laying birds fed enzyme supplemented PKC diets asreplacement for maize was investigated wth 210, 20 week old layng pullets of Dominant Black strain at the Teaching and Research Farm of the Delta State University, Asaba Campus, Nigeria. The birds which ust come into ...

  15. Lipid oxidation in fresh and stored eggs enriched with dietary ω3 ...

    African Journals Online (AJOL)

    STORAGESEVER

    2010-03-22

    Mar 22, 2010 ... Yolk TBA value was higher in fish oil than sunflower oil groups (p ... composition of different animal products (Hargis et al.,. 1991). Eggs, one .... laying hens on the base of nutrients recommended by (NRC, 1994). It resulted in ...

  16. Characterization of freeze-dried egg melange long stored after irradiation

    International Nuclear Information System (INIS)

    Bakalivanov, Stefan; Tsvetkova, Eli; Bakalivanova, Todorka; Tsvetkov, Tsvetan; Kaloyanov, Nikolay; Grigorova, Stoyanka; Alexieva, Vanja

    2008-01-01

    During the 4-year period of storage at room temperature of the freeze-dried (control group) and the freeze-dried and gamma-irradiated (2.0 and 3.5 kGy) whole hen's egg melange, no significant changes were found into the sensory and functional characteristics till the 28th month. The change in the number of SH groups was not unidirectional up to the 28th month and then it started to decrease in all investigated samples. During the entire period of investigation the amount of malondialdehyde in all three groups of egg melange was considerably below the allowed limit for foodstuffs. The most significant fractions of the protein spectra showed a general tendency of decrease during the storage

  17. Performance And Egg Quality Of Hens Fed Cocoa Husk Based Diet ...

    African Journals Online (AJOL)

    Lowman Brown hens, 37 - week - old, were used to study the effect of dietary inclusion of 10 and 20% cocoa husk meal (CHM) at the expense of maize on hen performance and egg quality. The trial was conducted for 10 weeks. Egg production (EP), egg weight (EW), egg mass (EM), feed consumption (FC), and feed ...

  18. New technologies to enhance quality and safety of table eggs: ultra-violet treatment and modified atmosphere packaging

    Directory of Open Access Journals (Sweden)

    Frédérique Pasquali

    2014-12-01

    Full Text Available In the present study the effect of ultra-violet (UV treatment alone and in combination with 100% CO2 modified atmosphere packaging (MAP was evaluated both on the survival of naturally occurring bacteria, as well as on quality parameters of table eggs during 28 days of storage at 21°C. Table eggs were collected from the conveyor belt after the UV module, and placed on carton trays. A representative number of carton trays were packed in a high barrier multilayer pouch filled with 100% CO2. All eggs were stored at 21°C and analysed at 0, 1, 7, 14, 21 and 28 days of storage. Eggs not treated with UV and not packed were also included. On the eggshells total colony count, total coliforms and faecal coliforms counts, as well as the detection of Salmonella spp. were investigated. Moreover, chemical-functional parameters such as weight loss, albumen pH and Haugh Unit (HU were evaluated. The total colony count on UV treated table eggs was approximately 1 log10 CFU/g lower than untreated eggs (2.27 vs 3.29 log10 CFU/g. During storage, CO2 packed eggs maintained the initial values of HU, whereas the albumen pH decreased up to 1.5-2 points in comparison to unpacked eggs. The UV treatment was effective in reducing the total colony count on the surface of table eggs. MAP showed a great potential in maintaining/enhance the technological properties of egg constituents (higher foam stability of the albumen for meringue preparation without significantly impacting on the microbial load of table eggs.

  19. Quality of spelt pasta enriched with eggs and identification of eggs using 13C MAS NMR spectroscopy

    Directory of Open Access Journals (Sweden)

    Filipović Jelena S.

    2015-01-01

    Full Text Available This paper deals with the characteristics of spelt pasta enriched with eggs. Eggs were added to spelt farina in the quantity of 0, 124 or 248 g/kg (equivalent to 0, 3 or 6 eggs, respectively. Post-hoc Tukey’s HSD test at 95% confidence limit showed significant differences between various samples. Relatively low coefficients of variation have been obtained for each applied assay (1.25-12.42%, which confirmed the high accuracy measurements and statistically significant results. Standard score analysis is applied for accessing the contribution of eggs content to spelt pasta quality. Maximum scores regarding quality (0.89 and chemical characteristics (0.70, have been obtained for 6 eggs spelt pasta formulation. It is also shown that the presence of eggs in pasta can be clearly confirmed by 13C MAS NMR spectroscopy. Simultaneous increase in area of peak positioned at 29.5 and 176 ppm is directly associated with the increase in the content of added eggs in the corresponding samples. Pertinent data point at positive contribution of eggs to the spelt pasta and also that NMR spectrum can be used in the egg quantity control. [Projekat Ministarstva nauke Republike Srbije, br. TRI 46005 i br. TR 31029

  20. Effects of packaging, mineral oil coating, and storage time on biogenic amine levels and internal quality of eggs.

    Science.gov (United States)

    Figueiredo, T C; Assis, D C S; Menezes, L D M; Oliveira, D D; Lima, A L; Souza, M R; Heneine, L G D; Cançado, S V

    2014-12-01

    This study was carried out with the aim of evaluating the effects of mineral oil application on eggshells and the use of plastic packages with lids on the physical-chemical and microbiological quality and biogenic amine contents of eggs stored under refrigeration for up to 125 d. A total of 1,920 eggs from 46-wk-old Hyline W36 laying hens were randomly distributed into 4 groups soon after classification: (i) 480 eggs were stored in pulp carton tray packages; (ii) 480 eggs were stored in plastic packages with lids; (iii) 480 eggs were stored in carton packages after the application of mineral oil; and (iv) 480 eggs were stored in plastic packages with lids after the application of mineral oil. The internal quality was measured by Haugh units, by the counts of mesophilic and psychrotrophic microorganisms, by the most probable number of total and thermal-tolerant coliforms, by the counts of molds and yeasts, by the analysis of Salmonella spp. and Staphylococcus spp., and by the levels of biogenic amines in the egg yolk and albumen. The application of mineral oil to the eggshell resulted in higher Haugh unit values throughout storage, and the use of plastic packages altered the internal quality. The application of mineral oil and the use of packaging had no effects on the microbiological and biogenic amine results. Microbiological analyses showed the absence of Salmonella spp., Staphylococcus aureus, thermal-tolerant coliforms, and fungi. However, the highest counts of mesophilic (1.1 × 10(7) cfu/g) and psychrotrophic (6.7 × 10(7) cfu/g) microorganisms were recorded. The highest values of biogenic amines detected and quantified were putrescine (2.38 mg/kg) and cadaverine (7.27 mg/kg) in the egg yolk and putrescine (1.95 mg/kg), cadaverine (2.83 mg/kg), and phenylethylamine (2.57 mg/kg) in the albumen. Despite these results, the biogenic amine levels recorded were considered low and would not be harmful to consumer health. ©2014 Poultry Science Association Inc.

  1. Studies on the effectiveness of oral pellet vaccine in improving egg production and egg quality in desi chicken

    Directory of Open Access Journals (Sweden)

    T. Lurthu Reetha

    2016-08-01

    Full Text Available Aim: To study the effect of Newcastle disease (ND oral pellet vaccine in egg production and egg quality in desi chicken. Materials and Methods: The study was conducted at Veterinary University Training and Research Centre, Tiruchirapalli, Tamil Nadu. A total of 48-day-old desi chicks obtained from a private hatchery in Namakkal, Tamil Nadu, were maintained under cage system of rearing up to 52 weeks of age as per standard management practices. All the 48 chicks were divided into six groups having eight chicks in each group were subjected to different treatment regimes. All the birds were challenged at 52 weeks of age with 0.5 ml dose of 104.0 egg infectious dose 50 virulent ND field virus. 10 eggs from each group were randomly collected during the last 3 days of 8 weeks interval period from 28 to 52 weeks of age and were used to measure the egg quality parameters. The production performance of each group was assessed at 4 weeks interval period from 25 to 52 weeks of age. Results: In all the six treatment groups with respect to egg production, no significant difference (p≥0.05 was noticed from 25 to 52 weeks of age. Similarly, in egg weight, egg shape index and specific gravity, no significant difference (p≥0.05 was noticed from 28 to 52 weeks of age. Conclusion: From this study, it is concluded that the administration of ND oral pellet vaccine to desi chicken does not affect the egg production performance, egg weight, egg shape index, and specific gravity of egg.

  2. Studies on the effectiveness of oral pellet vaccine in improving egg production and egg quality in desi chicken.

    Science.gov (United States)

    Reetha, T Lurthu; Rajeswar, J Johnson; Harikrishnan, T J; Sukumar, K; Srinivasan, P; Kirubakaran, J John

    2016-08-01

    To study the effect of Newcastle disease (ND) oral pellet vaccine in egg production and egg quality in desi chicken. The study was conducted at Veterinary University Training and Research Centre, Tiruchirapalli, Tamil Nadu. A total of 48-day-old desi chicks obtained from a private hatchery in Namakkal, Tamil Nadu, were maintained under cage system of rearing up to 52 weeks of age as per standard management practices. All the 48 chicks were divided into six groups having eight chicks in each group were subjected to different treatment regimes. All the birds were challenged at 52 weeks of age with 0.5 ml dose of 10(4.0) egg infectious dose 50 virulent ND field virus. 10 eggs from each group were randomly collected during the last 3 days of 8 weeks interval period from 28 to 52 weeks of age and were used to measure the egg quality parameters. The production performance of each group was assessed at 4 weeks interval period from 25 to 52 weeks of age. In all the six treatment groups with respect to egg production, no significant difference (p≥0.05) was noticed from 25 to 52 weeks of age. Similarly, in egg weight, egg shape index and specific gravity, no significant difference (p≥0.05) was noticed from 28 to 52 weeks of age. From this study, it is concluded that the administration of ND oral pellet vaccine to desi chicken does not affect the egg production performance, egg weight, egg shape index, and specific gravity of egg.

  3. Egg production and egg quality in free-range laying hens housed at different outdoor stocking densities.

    Science.gov (United States)

    Campbell, D L M; Lee, C; Hinch, G N; Roberts, J R

    2017-09-01

    Free-range laying hen systems are increasing in number within Australia. Variation in outdoor stocking densities has led to development of a national information standard on free-range egg labeling, including setting a maximum density of 10,000 hens per hectare. However, there are few data on the impacts of differing outdoor densities on production and egg quality. ISA Brown hens in small (150 hens) flocks were housed in identical indoor pens, each with access (from 21 weeks) to different sized ranges simulating one of three outdoor stocking densities (2 replicates each: 2,000 hens/hectare (ha), 10,000 hens/ha, 20,000 hens/ha). Hen-day production was tracked from 21 through 35 weeks with eggs visually graded daily for external deformities. All eggs laid on one day were weighed each week. Eggs were collected from each pen at 25, 30, and 36 weeks and analyzed for egg quality. There were no effects of outdoor stocking density on average hen-day percentage production (P = 0.67), egg weight (P = 0.09), percentages of deformed eggs (P = 0.30), shell reflectivity (P = 0.74), shell breaking strength (P = 0.07), shell deformation (P = 0.83), or shell thickness (P = 0.24). Eggs from hens in the highest density had the highest percentage shell weight (P = 0.004) and eggs from the lowest density had the highest yolk color score (P egg quality is warranted. © 2017 Poultry Science Association Inc.

  4. The influence of calcium and phosphorus levels on egg production, egg quality, tibia weight and 32P retention of layers

    International Nuclear Information System (INIS)

    Edwardly, Y.S.; Hendratno, C.; Yuyu Wahyu

    1979-01-01

    An experiment was conducted to study the influence of three levels of calcium and three levels of dietary phosphorus on egg production, egg quality, tibia weight and 32 P retention of layers. Calcium levels of 3.0; 3.5 and 4.0 percent were used and phosphorus contest of the diet fed were either 0.6; 0.9 or 1.2 percent.Egg production was highest with rations containing 3.5% calcium and 0.9% phosphorus. A significant increase in egg production was found at 0.9% levels of phosphorus compared to levels of 0.6 and 1.2%. Egg quality was increased significantly (p 32 P retention was low at the highest calcium level. (author)

  5. Effect of Store and Forward Teledermatology on Quality of Life

    Science.gov (United States)

    Whited, John D.; Warshaw, Erin M.; Edison, Karen E.; Kapur, Kush; Thottapurathu, Lizy; Raju, Srihari; Cook, Bethany; Engasser, Holly; Pullen, Samantha; Parks, Patricia; Sindowski, Tom; Motyka, Danuta; Brown, Rodney; Moritz, Thomas E.; Datta, Santanu K.; Chren, Mary-Margaret; Marty, Lucinda; Reda, Domenic J.

    2013-01-01

    Importance Although research on quality of life and dermatologic conditions is well represented in the literature, information on teledermatology’s effect on quality of life is virtually absent. Objective To determine the effect of store and forward teledermatology on quality of life. Design Two-site, parallel-group, superiority randomized controlled trial. Setting Dermatology clinics and affiliated sites of primary care at 2 US Department of Veterans Affairs medical facilities. Participants Patients being referred to a dermatology clinic were randomly assigned, stratified by site, to teledermatology or the conventional consultation process. Among the 392 patients who met the inclusion criteria and were randomized, 326 completed the allocated intervention and were included in the analysis. Interventions Store and forward teledermatology (digital images and a standardized history) or conventional text-based consultation processes were used to manage the dermatology consultations. Patients were followed up for 9 months. Main Outcome Measures The primary end point was change in Skindex-16 scores, a skin-specific quality-of-life instrument, between baseline and 9 months. A secondary end point was change in Skindex-16 scores between baseline and 3 months. Results Patients in both randomization groups demonstrated a clinically significant improvement in Skindex-16 scores between baseline and 9 months with no significant difference by randomization group (P=.66, composite score). No significant difference in Skindex-16 scores by randomization group between baseline and 3 months was found (P=.39, composite score). Conclusions Compared with the conventional consultation process, store and forward teledermatology did not result in a statistically significant difference in skin-related quality of life at 3 or 9 months after referral. Trial Registration clinicaltrials.gov Identifier: NCT00488293 PMID:23426111

  6. Effect of a commercial housing system on egg quality during extended storage.

    Science.gov (United States)

    Jones, D R; Karcher, D M; Abdo, Z

    2014-05-01

    Egg producers in the United States are utilizing a variety of commercial egg production systems to provide consumer choice and meet legislative requirements. Consumer egg grades in the United States were developed for conventional cage production, and it is unclear what effect alternative production systems might have on egg quality during retail and consumer home storage. The current study was undertaken to determine what changes in egg quality characteristics occur during extended cold storage for commercially produced conventional cage, enriched colony cage, and cage-free aviary eggs. During 12 wk of cold storage, egg weight, albumen height, Haugh unit, static compression shell strength, vitelline membrane strength and deformation, yolk index, shell dynamic stiffness, and whole egg total solids were monitored. Overall, aviary and enriched eggs were significantly (P system effects for yolk measurements, shell dynamic stiffness, or whole egg total solids were observed. Albumen height, Haugh unit, and yolk quality measurements were all greatest at 0 and lowest at 12 wk of storage (P systems for each measured attribute at 4, 6, and 12 wk was determined. Other than differences in the change of egg weight at 4 wk, no significant differences in the rate of quality decline were found among the housing systems. The results of the current study indicate that current US egg quality standards should effectively define quality for commercially produced conventional cage, enriched colony cage, and cage-free aviary eggs.

  7. Comparison of the effects of dietary supplementation of flavonoids on laying hen performance, egg quality and egg nutrient profile.

    Science.gov (United States)

    Iskender, H; Yenice, G; Dokumacioglu, E; Kaynar, O; Hayirli, A; Kaya, A

    2017-10-01

    1. The aim of this experiment was to compare the effects of dietary supplementation of hesperidin, naringin and quercetin on laying hen performance, egg quality and egg yolk lipid and protein profiles. 2. A total of 96 Lohmann White laying hens weighing an average of 1500 g at 28 weeks of age were randomly assigned to a basal diet and the basal diet supplemented (0.5 g/kg) with either hesperidin, naringin or quercetin. Each treatment was replicated in 6 cages in an 8-week experimental period. Data were analysed using one-way analysis of variance. 3. None of the dietary flavonoids affected laying performance and eggshell quality. Hesperidin and quercetin supplementations decreased albumen and yolk indexes. 4. As compared to the control group, egg yolk cholesterol content decreased and egg yolk protein content increased in response to dietary hesperidin and quercetin supplementation. The mean egg yolk cholesterol (mg/g) and protein (g/100 g) contents were 10.08/14.28, 16.12/14.08, 14.75/15.04 and 15.15/14.85 for the control group and groups supplemented with naringin, hesperidin and quercetin, respectively. 5. Egg yolk lipid and protein profiles were variable. 6. In conclusion, dietary supplementation of hesperidin or quercetin could be used in the diets during the early laying period to reduce egg yolk cholesterol and increase egg yolk protein, which may be attractive to consumers.

  8. MEASURING GROCERY STORES SERVICE QUALITY IN INDONESIA: A RETAIL SERVICE QUALITY SCALE APPROACH

    Directory of Open Access Journals (Sweden)

    Leonnard Leonnard

    2017-12-01

    Full Text Available The growing number of modern grocery stores in Indonesia is a challenge for each grocery store to maintain and increase their number of consumers. The success of maintaining and improving service quality will affect long-term profitability and business sustainability. Therefore, in this study, we examined consumer perceptions of service quality in one of modern grocery stores in Indonesia. Data were collected from 387 consumers of grocery stores in Jakarta, Bogor, Depok, Bekasi, Cibubur, and Subang. Structural Equation Modeling (SEM through Maximum likelihood and Bayesian estimation was employed to analyze the data. The finding indicated that the five indicators of the retail service quality scale consisting of physical aspects, reliability, personal interactions, problem solving and policies provided  valid multi-item instruments in measuring consumer perceptions of service quality in grocery stores.

  9. Quality evaluation of Argentina onion irradiated, transported and stored

    International Nuclear Information System (INIS)

    Walder, J.M.M.; Domarco, R.E.; Spoto, M.H.F.; Blumer, L.; Curzio, O.A.; Croci, C.A.

    1995-01-01

    Onion bulbs of the Valenciana Sintetica 14 variety from Argentina were irradiated with a dose of 60 Gy gamma rays at 30-40 days after harvest. Treated and control lots (40 bags of 20 Kg each) were send by road to Piracicaba, SP, Brazil, and stored up to 180 days in a warehouse at 20-28 0 C and relative humidity ranging from 50 to 100%. Monthly quality control was done by physical and sensorial analysis. Radiation treatment reduced the weight loss of the bulbs and increased the percentage of marketable bulbs without affecting its sensorial properties. (author). 4 refs, 8 tabs

  10. Dietary fatty acid enrichment increases egg size and quality of yellow seahorse Hippocampus kuda.

    Science.gov (United States)

    Saavedra, M; Masdeu, M; Hale, P; Sibbons, C M; Holt, W V

    2014-02-01

    Seahorses populations in the wild have been declining and to restore them a better knowledge of seahorse reproduction is required. This study examines the effect of dietary quality on seahorse fecundity and egg quality. Two different diets were tested with Hippocampus kuda females: frozen mysis (control) and frozen mysis enriched with a liposome spray containing essential fatty acids. Diets were given to females (two groups of five) over a seven week period. After this period, males (fed the control diet) and females were paired and the eggs dropped by the females were collected. Fatty acid profile were analysed and eggs were counted and measured. Results showed that females fed on enriched mysis had larger eggs and that these had a higher content of total polyunsaturated fatty acids. The size of the egg was especially affected in the first spawn, where egg size for females fed the enriched diet was significantly higher than the egg size from control females. This effect was reduced in the following spawning where no significant differences were found. Egg size is an important quality descriptor as seahorse juveniles originating from smaller eggs and/or eggs of poor quality will have less chances of overcoming adverse conditions in the wild and consequently have lower survival and growth rates. This study shows that enriching frozen mysis with polyunsaturated fatty acids increases egg size and egg quality of H. kuda. Copyright © 2013 Elsevier B.V. All rights reserved.

  11. Effects of dietary oil sources on egg quality, fatty acid composition of ...

    African Journals Online (AJOL)

    The results of this study demonstrated that olive oil improved egg weight and egg shell quality compared to the other oils tested; fish and soyabean oil increased the omega-3 fatty acid level of egg yolk, and soyabean oil had positive effects on serum lipid concentrations. Incorporation of these oils into the diets of Japanese ...

  12. Correlation of quality measurements to visible-near infrared spectra of pasteurized egg

    Science.gov (United States)

    A twelve week study was conducted on the egg albumen from both pasteurized and non-pasteurized shell eggs using visible-near infrared spectroscopy. Correlation of the chemical changes detected in the spectra to the measurement of Haugh units (measure of interior egg quality) was carried out using ch...

  13. Chemometric correlation of shelf life, quality measurements, and visible-near infrared spectra of pasteurized eggs

    Science.gov (United States)

    A twelve week study was conducted on the egg albumen from both pasteurized and non-pasteurized shell eggs using visible-near infrared spectroscopy. Correlation of the chemical changes detected in the spectra to the measurement of Haugh units (measure of interior egg quality) was carried out using pr...

  14. Effect of Dietary Marine Microalgae ( Powder on Egg Production, Blood Lipid Profiles, Egg Quality, and Fatty Acid Composition of Egg Yolk in Layers

    Directory of Open Access Journals (Sweden)

    J. H. Park

    2015-03-01

    Full Text Available Two hundred and sixteen Institut de Sélection Animale (ISA brown layers (40 wks of age were studied for 6 wks to examine the effect of microalgae powder (MAP on egg production, egg quality, blood lipid profile, and fatty acid concentration of egg yolk. Dietary treatments were as follows: i CON (basal diet, ii 0.5% MAP (CON+0.5% Schizochytrium powder, and iii 1.0% MAP (CON+1.0% Schizochytrium powder. From 44 to 46 wks, egg production was higher in 1.0% MAP treatment than in control treatment (linear, p = 0.034; however, there was no difference on the egg production from 40 to 43 wks (p>0.05. Serum triglyceride and total cholesterol were significantly reduced in the groups fed with MAP, compared to those in groups fed with control diets (Quadratic, p = 0.034 and p = 0.039, respectively. Inclusion of 0.5% MAP in the diet of layers improved egg yolk color, compared with hens fed with basal diet at 46 wks (quadratic, p = 0.044. Eggshell thickness was linearly increased in MAP-fed treatments at 46th wk (p<0.05. Concentration of yolk docosahexaenoic acid (DHA; C22:6n-3 was increased in treatment groups fed with MAP (linear, p<0.05. The n-6 fatty acids, n-6/n-3 fatty acid, and unsaturated fatty acid/saturated fatty acid were decreased in treatment groups fed with MAP (linear, p<0.05. These results suggest that MAP improved the egg production and egg quality, and may affect serum lipid metabolites in the layers. In addition, MAP increases yolk DHA levels, and deceases n-6/n-3 fatty acid ratio.

  15. [Identification of special quality eggs with NIR spectroscopy technology based on symbol entropy feature extraction method].

    Science.gov (United States)

    Zhao, Yong; Hong, Wen-Xue

    2011-11-01

    Fast, nondestructive and accurate identification of special quality eggs is an urgent problem. The present paper proposed a new feature extraction method based on symbol entropy to identify near infrared spectroscopy of special quality eggs. The authors selected normal eggs, free range eggs, selenium-enriched eggs and zinc-enriched eggs as research objects and measured the near-infrared diffuse reflectance spectra in the range of 12 000-4 000 cm(-1). Raw spectra were symbolically represented with aggregation approximation algorithm and symbolic entropy was extracted as feature vector. An error-correcting output codes multiclass support vector machine classifier was designed to identify the spectrum. Symbolic entropy feature is robust when parameter changed and the highest recognition rate reaches up to 100%. The results show that the identification method of special quality eggs using near-infrared is feasible and the symbol entropy can be used as a new feature extraction method of near-infrared spectra.

  16. Performance and egg quality of aged laying hens fed diets ...

    African Journals Online (AJOL)

    p2492989

    receiving OSM produced more eggs and egg mass along with considerably greater feed intake than those on all the other .... initiation of the second egg production period, were housed in cages located in a three-deck battery-type cage block. .... Diets (in mash form) and water were provided for ad libitum consumption.

  17. Cortical reaction as an egg quality indicator in artificial reproduction of pikeperch, Sander lucioperca.

    Science.gov (United States)

    Zarski, Daniel; Krejszeff, Sławomir; Palińska, Katarzyna; Targońska, Katarzyna; Kupren, Krzysztof; Fontaine, Pascal; Kestemont, Patrick; Kucharczyk, Dariusz

    2012-01-01

    The aim of this study was to investigate the process of the cortical reaction in eggs of pikeperch, Sander lucioperca (L.), as well as the application of microscopic assessment of this process in egg quality evaluation. The analysis was carried out with eggs obtained from 10 females by artificial reproduction, in which hormonal stimulation with hCG was applied. Subsequently, each sample of eggs (separately from each female fish) was analysed. The analysis included observation of the cortical reaction and the process of egg swelling, and determination of the effect of temperature (12, 14 and 16°C) and the presence of spermatozoa on the cortical reaction. The results indicate that the cortical reaction in pikeperch eggs is quite violent, resulting in visible deformation of eggs between 3 and 5 min after activation. No effect of temperature or the presence of spermatozoa on the cortical reaction was observed. A strong correlation was recorded for the percentage of egg deformations observed and embryo survival rate. The described method of determination of pikeperch egg quality (based on egg deformation rate between 3 and 5 min after activation) may be highly useful, both in scientific research (where high-quality eggs are required) and in hatchery practice.

  18. The effects of kale (Brassica oleracea ssp. acephala), basil (Ocimum basilicum) and thyme (Thymus vulgaris) as forage material in organic egg production on egg quality

    DEFF Research Database (Denmark)

    Hammershøj, Marianne; Steenfeldt, Sanna

    2012-01-01

    1. In organic egg production, forage material as part of the diet for laying hens is mandatory. The purpose of the present study was to examine the effect of feeding with forage materials including maize silage, herbs or kale on egg production and various egg quality parameters of the shell, yolk...

  19. Effect of organic selenium and zinc on the performance and egg quality of Japanese quails

    Directory of Open Access Journals (Sweden)

    VC Cruz

    2011-06-01

    Full Text Available The present study aimed at evaluating the effect of the dietary inclusion of organic trace minerals selenium and zinc on the performance and internal and external egg quality of Japanese quails submitted to heat stress. Data on egg production, feed conversion (kg feed intake/kg eggs and dozen eggs, egg weight, egg specific gravity, eggshell thickness and weight, Haugh unit, yolk index, albumen index and mortality (% of 144 quails were evaluated for 112 days, divided in eight cycles of 14 days. Birds were distributed according to a randomized block experimental design into four treatments (control; 0.3ppm Se; 60ppm Zn and 0.3ppm Se + 60ppm Zn with six replicates each. There were no differences (p> 0.05 in egg production (%, egg mass (g/hen/day, feed conversion per egg mass (kg/kg, feed conversion per dozen eggs (kg/dz, average egg weight (g, egg specific gravity, eggshell thickness and weight (g, Haugh unit, yolk index, albumen index and mortality (%. However, quails fed the combination of Se and Zn presented higher (p < 0.05 feed intake (28.73 g/hen/day. Those fed only organic selenium had higher average daily egg production (30.17 eggs/day, and those fed the diet only supplemented with zinc presented higher mortality (p < 0.05. The results of the present study suggest that the supplementation of organic trace minerals in Japanese quails diets submitted to heat stress does not significantly influence quail performance and internal egg quality, whereas the supplementation of the combination of organic Zn and Se increases feed intake.

  20. Effects of non-feed removal molting methods on egg quality traits in commercial brown egg laying hens in Turkey.

    Science.gov (United States)

    Petek, Metin; Gezen, S Sule; Alpay, Fazli; Cibik, Recep

    2008-08-01

    Non-feed removal molting programme in commercial brown laying hens and its influence on pre-molting, post-molting and end of cycle egg quality traits were investigated. Overall 54 birds were randomly divided into three treatment groups and each group was fed with one of the following diets during 10 days of molting period: (i) grain barley, (ii) alfalfa meal, or (iii) commercial layer ration (non-molted control group). Eggs obtained from groups in pre-molting, post-molting and end of cycle periods were examined for several quality performance traits such as egg weight, specific gravity, shape index, shell strength, shell thickness, eggshell weight, haugh unit, albumen index, yolk index and yolk color. Results indicated that non-feed removal molting programme based particularly on grain barley had positive effect on egg quality traits in laying hens. Notably, yolk color and haugh unit, which are considered as the most important quality parameters from the consumer point of view, were relatively improved in barley molted group.

  1. Exterior egg quality as affected by enrichment resources layout in furnished laying-hen cages.

    Science.gov (United States)

    Li, Xiang; Chen, Donghua; Meng, Fanyu; Su, Yingying; Wang, Lisha; Zhang, Runxiang; Li, Jianhong; Bao, Jun

    2017-10-01

    This study aimed to investigate the effects of enrichment resources (a perch, dustbath, and nest) layout in furnished laying-hen cages (FC) on exterior quality of eggs. One hundred and sixty-eight (168) Hy-Line Brown laying hens at 16 weeks of age were randomly distributed to four treatments: small furnished cages (SFC), medium furnished cages type I (MFC-I), medium furnished cages type II (MFC-II), and medium furnished cages type III (MFC-III). Each treatment had 4 replicates or cages with 6 hens for SFC (24 birds for each SFC) and 12 hen/cage for MFC-I, -II, and -III (48 birds for each MFC-I, -II and -III). Following a 2-week acclimation, data collection started at 18 weeks of age and continued till 52 weeks of age. Dirtiness of egg surface or cracked shell as indicators of the exterior egg quality were recorded each week. The results showed that the proportion of cracked or dirty eggs was significantly affected by the FC type (p<0.01) in that the highest proportion of cracked or dirty eggs was found in MFC-I and the lowest proportion of dirty eggs in SFC. The results of this showed that furnished cage types affected both dirty eggs and cracked eggs (p<0.01). The results also indicated that not nest but dustbath lead to more dirty eggs. Only MFC-I had higher dirty eggs at nest than other FC (p< 0.01). The results of dirty eggs in MFC-I and MFC-II compared with SFC and MFC-III seemed suggest that a low position of dustbath led to more dirty eggs. SFC design affected exterior egg quality and the low position of dustbath in FC resulted in higher proportion of dirty eggs.

  2. Effect of cadmium doses on chickens. 3. Long term influence of cadmium on feed consumption weight gain, egg performance and egg shell quality of laying hens

    Energy Technology Data Exchange (ETDEWEB)

    Suelz, M; Hardebeck, H; Krampitz, G

    1974-01-01

    In long-lasting experiments the application of Cd resulted in a decreased state of health (nephritis) of hens. Feed consumption, weight gain and egg production were reduced. Egg shell quality was not changed under practical Cd-concentrations. Studies of the ultrastructure of egg shells of animals fed with Cd did not yield any hints of damages. The protein-profiles of egg shells revealed an additional component under Cd-application. 17 references, 2 figures, 2 tables.

  3. Effect of superdosing phytase on productive performance and egg quality in laying hens

    Directory of Open Access Journals (Sweden)

    Jong Hyuk Kim

    2017-07-01

    Full Text Available Objective An experiment was conducted to determine the effect of superdosing phytase on productive performance and egg quality in laying hens. Methods A total of 200 42-wk-old Hy-Line Brown laying hens were allotted into 1 of 5 dietary treatments with 5 replicates consisting of 8 hens per replicate. The positive control (PC and negative control diets (NC were prepared based on the recommended P levels in layer diets. Supplemental phytase was added to the negative control diet at 10,000 (SD10, 20,000 (SD20, or 30,000 (SD30 fytase units (FTU/kg. Productive performance was summarized for 6 weeks from 42 weeks to 47 weeks of age. Egg quality was assessed from 4 eggs per replicate randomly collected at the conclusion of the experiment. Results The SD20 treatment had greater (p<0.05 hen-day egg production than PC, NC, and SD10 treatment groups. There was no difference in hen-day egg production between SD20 and SD30 treatment groups. However, SD30 treatment had greater (p<0.05 hen-day egg production than PC treatment, but showed no difference in hen-day egg production as compared to NC and SD10 treatment groups. However, egg weight, egg mass, feed intake, and feed conversion ratio were not affected by dietary treatments. Egg quality including eggshell strength, eggshell color, egg yolk color, and haugh unit was not influenced by dietary treatments. Conclusion Superdosing level of 20,000 FTU/kg phytase in diets has a positive effect on egg production rate, but no beneficial effect on egg quality in laying hens.

  4. Effects of balanced dietary protein levels on egg production and egg quality parameters of individual commercial layers.

    Science.gov (United States)

    Shim, M Y; Song, E; Billard, L; Aggrey, S E; Pesti, G M; Sodsee, P

    2013-10-01

    The effects of a series of balanced dietary protein levels on egg production and egg quality parameters of laying hens from 18 through 74 wk of age were investigated. One hundred forty-four pullets (Bovans) were randomly assigned to individual cages with separate feeders including 3 different protein level series of isocaloric diets. Diets were separated into 4 phases of 18-22, 23-32, 33-44, and 45-74 wk of age. The high protein (H) series contained 21.62, 19.05, 16.32, and 16.05% CP, respectively. Medium protein (M) and low protein (L) series were 2 and 4% lower in balanced dietary protein. The results clearly demonstrated that the balanced dietary protein level was a limiting factor for BW, ADFI, egg weight, hen day egg production (HDEP), and feed per kilogram of eggs. Feeding with the L series resulted in lower ADFI and HDEP (90.33% peak production) and more feed per kilogram of eggs compared with the H or M series (HDEP; 93.23 and 95.68% peak production, monthly basis). Egg weight responded in a linear manner to balanced dietary protein level (58.78, 55.94, and 52.73 g for H, M, and L, respectively). Feed intake of all hens, but especially those in the L series, increased considerably after wk 54 when the temperature of the house decreased due to winter conditions. Thus, hens fed the L series seemed particularly dependent on house temperature to maintain BW, ADFI, and HDEP. For egg quality parameters, percent yolk, Haugh units, and egg specific gravity were similar regardless of diets. Haugh units were found to be greatly affected by the variation of housing temperature (P = 0.025). Maximum performance cannot always be expected to lead to maximum profits. Contrary to the idea of a daily amino acid requirement for maximum performance, these results may be used to determine profit-maximizing levels of balanced dietary protein based on the cost of protein and returns from different possible protein levels that may be fed.

  5. Nutritional quality of eggs from hens fed distillers dried grains with solubles.

    Science.gov (United States)

    Trupia, S; Winkler-Moser, J K; Guney, A C; Beckstead, R; Chen, C-Y O

    2016-11-01

    A feeding trial was conducted with laying hens where either 10% or 20% regular-fat distiller's dried grains with solubles (R-DDGS) or low-fat DDGS (L-DDGS) were incorporated into the feed. Production parameters and the effect of DDGS on egg nutritional quality, focusing on yolk lipids, were evaluated. Neither R-DDGS nor L-DDGS at up to 20% of laying hen feeds had a statistically significant impact on hen weight gain, egg production, feed intake, feed efficiency, egg mass, or egg weight. Specific gravity was slightly lower for eggs from hens fed 10% R-DDGS or 20% L-DDGS. Eggs from layers fed DDGS had enhanced levels of tocopherols, tocotrienols, and xanthophylls in the yolk, as well as also increased yolk yellow and red color. Eggs from L-DDGS diet had higher tocopherol content, but eggs from R-DDGS diets had higher xanthophylls. Fatty acid composition in eggs was slightly altered by DDGS, but the ratio of saturated to unsaturated fatty acids was very similar. Feeding DDGS to layer hens had no effect on lecithin or cholesterol content of the eggs. Thus, inclusion of DDGS in the diet of laying hens resulted in increases of several beneficial lipophilic nutrients in egg yolks with no apparent detrimental effects. © 2016 Poultry Science Association Inc.

  6. Determining Tocotrienol Rich Fraction Effects on Laying, Mortality and Egg Quality Parameters

    OpenAIRE

    Mardhati, M.; Farah Nurshahida, M.S.; Osman, A.; Wan Nooraida, W.M.

    2016-01-01

    The public interest and awareness in healthier lifestyle has increased the demand of functional food, nutraceuticals and designer foods, which has resulted in the creation of new foods in marketplace, for instance designer and specialty eggs. A feeding trial was carried out to evaluate the laying performance of H&N layer chickens fed diets supplemented with tocotrienol rich fraction (TRF), as well as to quantify tocopherol and tocotrienol accumulation in eggs and their effect on egg quality. ...

  7. Regulation of egg quality and lipids metabolism by Zinc Oxide Nanoparticles.

    Science.gov (United States)

    Zhao, Yong; Li, Lan; Zhang, Peng-Fei; Liu, Xin-Qi; Zhang, Wei-Dong; Ding, Zhao-Peng; Wang, Shi-Wen; Shen, Wei; Min, Ling-Jiang; Hao, Zhi-Hui

    2016-04-01

    This investigation was designed to explore the effects of Zinc Oxide Nanoparticles (ZnO NP) on egg quality and the mechanism of decreasing of yolk lipids. Different concentration of ZnO NP and ZnSO4 were used to treat hens for 24 weeks. The body weight and egg laying frequency were recorded and analyzed. Albumen height, Haugh unit, and yolk color score were analyzed by an Egg Multi Tester. Breaking strength was determined by an Egg Force Reader. Egg shell thickness was measured using an Egg Shell Thickness Gouge. Shell color was detected by a spectrophotometer. Egg shape index was measured by Egg Form Coefficient Measuring Instrument. Albumen and yolk protein was determined by the Kjeldahl method. Amino acids were determined by an amino acids analyzer. Trace elements Zn, Fe, Cu, and P (mg/kg wet mass) were determined in digested solutions using Inductively Coupled Plasma-Optical Emission Spectrometry. TC and TG were measured using commercial analytical kits. Yolk triglyceride, total cholesterol, pancreatic lipase, and phospholipids were determined by appropriate kits. β-carotene was determined by spectrophotometry. Lipid metabolism was also investigated with liver, plasma, and ovary samples. ZnO NP did not change the body weight of hens during the treatment period. ZnO NP slowed down egg laying frequency at the beginning of egg laying period but not at later time. ZnO NP did not affect egg protein or water contents, slightly decreased egg physical parameters (12 to 30%) and trace elements (20 to 35%) after 24 weeks treatment. However, yolk lipids content were significantly decreased by ZnO NP (20 to 35%). The mechanism of Zinc oxide nanoparticles decreasing yolk lipids was that they decreased the synthesis of lipids and increased lipid digestion. These data suggested ZnO NP affected egg quality and specifically regulated lipids metabolism in hens through altering the function of hen's ovary and liver. © 2016 Poultry Science Association Inc.

  8. Microbial quality of industrial liquid egg white: assumptions on spoiling issues in egg-based chilled desserts.

    Science.gov (United States)

    Techer, Clarisse; Daoud, Amina; Madec, Marie-Noëlle; Gautier, Michel; Jan, Sophie; Baron, Florence

    2015-02-01

    As a 1st step, this study aimed at investigating the microbial quality of liquid egg white in a French egg processing company. Thirty raw and 33 pasteurized liquid egg white samples were analyzed. Pasteurization was globally found efficient on mesophilic contaminants (1.7 ± 1.6 and 0.8 ± 0.9 log CFU/mL in raw and pasteurized samples, respectively), including for the control of Salmonella. However, Gram-positive enterococci were still detected in the pasteurized samples. As a 2nd step, a representative bacterial collection was built for exploring the spoilage issue in egg-based chilled desserts. Custard cream was chosen as growth medium since this food is widely used for the production of French chilled desserts. All of the 166 isolates of the bacterial collection were shown to be able to grow and to induce spoilage of the custard cream at refrigeration temperature (10 °C). Several spoilage types were highlighted in the custard cream, on the basis of changes regarding pH, consistency, production of holes or gas. As a 3rd step, bacterial enzymatic activities were explored on custard cream-based agar media. The bacterial collection was reduced to 43 isolates, based on further selection regarding the genera and the spoilage types previously highlighted. Albeit to different degrees, all these isolates were able to produce proteases. A large part of these isolates also expressed lipolytic and amylolytic activities. This study emphasizes the need to control egg white contamination and especially with Gram-positive heat-resistant Enterococi, in order to guarantee the shelf life of egg-based chilled desserts. © 2015 Institute of Food Technologists®

  9. Moulting patterns of Alabio and Mojosari ducks and their relation on blood lipids (tryglycerides, egg production and egg quality

    Directory of Open Access Journals (Sweden)

    Maijon Purba

    2005-06-01

    Full Text Available Moulting is a biological condition that can happen in poultry. It is resulted from the complex interaction which involves the function of thyroxine hormone. Moulting can reduce or even stop the egg production. A study was conducted to observe the moulting patterns of local ducks (Alabio and Mojosari and to determine the relation of moulting with blood lipids (triglycerides, egg production and quality. Each breed consisted of ten female dukcs were observed for moulting pattern, blood triglycerides, egg production and quality. Fourty ducks were used for simulation of egg production. Data from moulting patterns,egg production and quality were analyzed using t-based on Least Square means with Statistical Analysis System. The relation of breeds and moulting patterns with triglycerides were analyzed using Analysis of Variance (ANOVA for a completely randomized design in a factorial arrangement of 2x2. The main factor was kind of breeds, while the subfactor was the period of moulting, before and during moulting. There were not interaction in every variables between both factors. The average moulting periode of Alabio was significantly (P<0.05 shorter than that of Mojosari (69 vs 76 days. There were 40% of Alabio ducks moulting for 61-70 days, while 40% of Mojosari ducks moulting for 71-80 days. Egg production of Alabio ducks before and after moulting were higher than those Mojosari ducks. The triglycerides content of Alabio and Mojosari ducks was decreased during moulting, in Alabio ducks they were 32.02 and 27.64 μg/ml before and during moulting, while in Mojosari ducks they were 32.83 and 29.32 μg/ml respectively. Egg weight, albumin weight, yolk weight, and haugh unit of the two breeds increased after moulting, while yolk colour decreased. The average yolk colour of Alabio ducks before and after moulting were 6.90 and 5.11, while in Mojosari ducks they were 7.90 and 4.60 respectively.

  10. Performance and egg quality traits of egg-type chickens fed ...

    African Journals Online (AJOL)

    FCR), egg weight (EW) and haugh units (HU). All data were analyzed using descriptive statistics and analysis of variance. The determined CP of CSC was 35.11% and its gossypol content was 570g/ton. FCR ranged from 1.6 to 4.9, HDP from ...

  11. Evaluation of Egg Quality Traits of Local Chickens in the Humid ...

    African Journals Online (AJOL)

    Four hundred and thirty six (436) eggs laid by seven genotypes of local chickens within 56 days were used to evaluate egg quality traits. The genotypes evaluated were the homozygous naked neck (Na/Na) and frizzle (F/F), heterozygous naked neck (Na/na) and frizzle (F/na), reciprocal crosses between naked neck and ...

  12. Layer performance, fatty acid profile and the quality of eggs from ...

    African Journals Online (AJOL)

    It was concluded that, although MOWSM inclusion improved yolk colour, maintained external egg quality, and improved the fatty acid profile, the deleterious effect that it had on layer performance indicated that it may not be fed to early-lay hens at these respective levels. Keywords: Alternative protein, egg production, laying ...

  13. Exploratory and descriptive study on nutritional characteristics and quality of eggs from Chilean partridge (Nothoprocta perdicaria).

    Science.gov (United States)

    Arias, José Luis; Matthei, Alberto; Valenzuela, Carolina

    2018-01-01

    This work aims to contribute more information on tinamou eggs by performing an exploratory and descriptive study of some of their nutritional and quality characteristics. The chemical composition of tinamou egg showed a high protein content in white (85% dry basis) and high lipid concentration in yolk (52% db). The iron (Fe) content in white was higher than hen egg (0.47 mg/100 g) and this could be associated with the observed pinkish color of the white. As in the hen egg, the major fatty acids in tinamou yolk were: oleic (39%), linoleic (23%) and palmitic (20%). The cholesterol content of tinamou was 21.2 mg/g of yolk, and 100 g of whole egg provides 589 mg of cholesterol. As in the hen egg, tinamou egg white showed high levels of lysine, sulfur-containing amino acids, threonine and valine with respect to the recommended allowance for an adult man. All essential amino acids with the exception of histidine cover the adult requirements. The shell inorganic composition of these eggs is calcium carbonate and the morphology was similar to other avian eggs. Tinamou egg is small and elongated, with a dark brown color. The eggshell is thinner and experiences more deformation but less breaking strength than hen eggshell. © 2017 Japanese Society of Animal Science.

  14. Effect of distance from the roadway on heavy metal content and egg quality of village laying hen's egg along roadsides of tokat-turhal, turkey

    International Nuclear Information System (INIS)

    Sekeroglu, A.; Sari, H.; Sarica, M.; Duman, M.

    2013-01-01

    In this study, the heavy metal contents and egg quality characteristics of chicken eggs was studied. The eggs have been collected at distances of 0-100 (Distance A), 100-200 (Distance B) and 200-300 m (Distance C) away from the edge of Tokat-Turhal road.The distance from roadway had no significant effect on egg Cu and Mn contents (P>0.05), although a significant effect on egg Cd and Pb content (P 0.05). Eggs obtained from distance A and B had significantly higher weight than obtained from distance C (P<0.05). Egg obtained from distance B had significantly lower egg shell colour scales than those of the other distances (P<0.01). And, egg yolk colour was showed a significant variation among the distances away from the roadway, and the highest yolk colour value was detected in distance B (P<0.05). Depending on obtained results, it can be concluded that the egg heavy metal concentrations exceeded background levels for hen eggs. Therefore, consumers should be aware of the possible health risks related by the use of these eggs which has obtained from side of road.

  15. Body weight, egg production, and egg quality traits of gray, brown, and white varieties of Japanese quail (Coturnix coturnix japonica in coastal climatic condition of Odisha

    Directory of Open Access Journals (Sweden)

    Jessy Bagh

    2016-08-01

    Full Text Available Aim: The present study was conducted to evaluate the performance of gray, brown, and white varieties of Japanese quail (Coturnix coturnix japonica with respect to body weight, egg production, and egg quality traits in the coastal climatic condition of Odisha. Materials and Methods: A total of 500-day-old straight run Japanese quail chicks of three varieties, viz., gray, brown, and white were randomly selected and reared in deep litter system at Central Poultry Development Organization, Eastern Region, Bhubaneswar. The weekly body weight of the birds was recorded till their egg production stage (up to 6 weeks of age. The average egg production was recorded every biweekly from 6th to 20th week. Exterior and interior quality of eggs from each variety was determined at 6 weeks of age. Results: The initial average weekly body weight of three varieties did not differ (p>0.05 among the varieties. However, from 1st to 6th week significantly higher body weight was observed in gray than white and brown. Brown varieties had reached 50% egg production 1 week earlier than gray and white. Brown had higher peak hen day (HD production or henhoused egg production followed by white and gray. External quality such as: Egg weight, egg length, egg width, volume, shape index, shell weight, shell thickness depicted no significant difference among the varieties except circumference length and circumference width, which were significantly higher (p≤0.05 in gray varieties than brown varieties. Internal egg characteristics such as: Albumen length, albumen width, albumen height, albumen index, yolk length, yolk width, yolk height, yolk index, albumen weight, yolk weight, Haugh unit revealed no significance difference among the varieties. Conclusion: It may be summarized from the findings that gray excelled in body weight followed by white and brown. Egg production potential in terms of hen house egg production or HD egg production was higher for brown followed by white

  16. Quality of whey powders stored under adverse conditions

    Science.gov (United States)

    Whey protein concentrate powder (WPC) is exported by the U.S. and is included in emergency aid foods, but the bags sent overseas are usually stored without refrigeration and under elevated temperature and relative humidity (RH). The shelf life of WPC under adverse conditions must be known to preven...

  17. Turmeric root and annato seed in second-cycle layer diets: performance and egg quality

    Directory of Open Access Journals (Sweden)

    C Laganá

    2011-09-01

    Full Text Available The objective of this study was to evaluate the effects of the inclusion of annato (Bixa orellana L. and turmeric (Turmeric longa L. in layer feeds on live performance, egg quality, and yolk pigmentation and depigmentation time. A number of 144 layers were distributed in a completely randomized experimental design, with four treatments with six replicates of six birds each. In the basal diet, sorghum replaced 50% of corn, and was supplemented or not with natural pigments to composse the following treatments: Control (0% pigments, AS (2.0% annato, TR (2% turmeric and ASTR (1% annato and 1% turmeric. Egg weight (g, egg production (%, egg mass (%, feed intake (g, feed conversion ratio (kg/dz and kg/kg and mortality were evaluated. The following egg quality parameters were evaluated: specific gravity (SG; yolk, albumen, and eggshell percentages, and yolk color. The treatments did not influence layer performance or egg quality parameters, except for egg production and yolk color. The dietary inclusion of 1% turmeric root and 1% annato seed promoted higher egg production. Diets containing annato resulted in more saturated, more intense, and redder yolk color, with increasing pigment deposition after day 10, with maximum values obtained on day 28. Dried turmeric root did not promote good yolk pigmentation, resulting in higher presence of white in the yolk, which was stabilized on day 4. Three days after pigments were withdrawn from the feeds, yolk color faded in the treatments with annato inclusion.

  18. The effects of kale (Brassica oleracea ssp. acephala), basil (Ocimum basilicum) and thyme (Thymus vulgaris) as forage material in organic egg production on egg quality.

    Science.gov (United States)

    Hammershøj, M; Steenfeldt, S

    2012-01-01

    1. In organic egg production, forage material as part of the diet for laying hens is mandatory. The purpose of the present study was to examine the effect of feeding with forage materials including maize silage, herbs or kale on egg production and various egg quality parameters of the shell, yolk colour, egg albumen, sensory properties, fatty acid and carotenoid composition of the egg yolk. 2. A total of 5 dietary treatments were tested for 5 weeks, consisting of a basal organic feed plus 120 g/hen.d of the following forage materials: 1) maize silage (control), 2) maize silage incl. 15 g/kg basil, 3) maize silage incl. 30 g/kg basil, 4) maize silage incl. 15 g/kg thyme, or 5) fresh kale leaves. Each was supplied to three replicates of 20 hens. A total of 300 hens was used. 3. Feed intake, forage intake and laying rate did not differ with treatment, but egg weight and egg mass produced increased significantly with the kale treatment. 4. The egg shell strength tended to be higher with the kale treatment, and egg yolk colour was significantly more red with the kale treatment and more yellow with basil and kale treatments. The albumen DM content and albumen gel strength were lowest with the thyme treatment. By sensory evaluation, the kale treatment resulted in eggs with less sulphur aroma, higher yolk colour score, and more sweet and less watery albumen taste. Furthermore, the eggs of the kale treatment had significantly higher lutein and β-carotene content. Also, violaxanthin, an orange xanthophyll, tended to be higher in kale and eggs from hens receiving kale. 5. In conclusion, forage material, especially basil and kale, resulted in increased egg production and eggs of high and differentiable quality.

  19. The effects of dietary calcium iodate on productive performance, egg quality and iodine accumulation in eggs of laying hens.

    Science.gov (United States)

    Bakhshalinejad, R; Hassanabadi, A; Nassiri-Moghaddam, H; Zarghi, H

    2018-01-25

    The aim of this study was to examine the effects of various levels of supplemental calcium iodate (CI) on productive performance, egg quality, blood indices and iodine (I) accumulation in the eggs in commercial laying hens. A total of 240 White Leghorn layers (Hy-line W36) were divided through a completely randomized design into six treatments with five replicates and eight hens per each at 32 weeks of age. This experiment lasted for 12 weeks. Concentrations of I in the mash diets were 0.74, 3.13, 5.57, 8.11, 10.65 and 12.94 mg I/kg of feed in treatments 1-6 respectively. The added doses of CI were included 0.0 (control), 2.5, 5.0, 7.5, 10.0 and 12.5 mg/kg of diet for treatments 1-6 respectively. There were no significant differences in productive performance among the treatments. The highest eggshell strength was observed in group fed diet containing 3.13 mg I/kg (p = .014). The highest percentage of calcium and lowest percentage of phosphorus in eggshell were observed in group fed diet containing 12.94 mg I/kg (p = .0001). Feeding hens with diet containing 12.94 mg I/kg increased serum triiodothyronine-to-thyroxine ratio (p = .0001). Serum alanine aminotransferase activity in hens fed diet containing 12.94 mg I/kg was significantly more than control (p = .041). Blood Serum triglycerides in hens fed diet containing 8.11 mg I/kg were significantly higher than control (p = .0001). Edible fraction of the eggs of birds fed diet containing 12.94 mg I/kg was enriched by I almost 3 times more than those fed diet containing 0.74 mg I/kg. The results suggested that egg production, egg mass, feed intake and feed conversion ratio were not significantly affected by dietary I levels. Iodine accumulation in the eggs were increased by increasing dietary I levels and the level of 10 mg/kg CI could supply I enrichment of the eggs. © 2018 Blackwell Verlag GmbH.

  20. Ozone treatment of shell eggs to preserve functional quality and enhance shelf life during storage.

    Science.gov (United States)

    Yüceer, Muhammed; Aday, Mehmet Seçkin; Caner, Cengiz

    2016-06-01

    Eggs have long been recognised as a source of high-quality proteins. Many methods exist to extend shelf life of food and one of them is ozone treatment, which is an emerging technology for disinfecting surfaces in the food industry. This study aimed to extend the shelf life of fresh eggs using gaseous ozone treatments at concentrations of 2, 4 and 6 ppm with exposure times of 2 and 5 min during storage for 6 weeks at 24 °C. The effect of the treatments on interior quality and functional properties of eggs is also reported. Ozone concentration and exposure time significantly affected the Haugh unit (HU), yolk index, albumen pH, relative whipping capacity (RWC), and albumen viscosity of eggs during the storage. Control eggs had the highest albumen pH and lowest albumen viscosity. Attributes such as albumen pH and RWC of eggs exposed to ozone treatments were better than the control samples. The measurement results showed that ozone concentration at 6 ppm and exposure time of 5 min can be applied to fresh eggs and extend shelf life up to 6 weeks at 24 °C storage period. Ozone treatments helped to maintain egg quality for a longer time. Ozone concentrations at 2 and 4 ppm showed promising results in maintaining internal quality and functional properties of fresh eggs during storage. Ozone at high concentration (6 ppm) caused a detrimental effect on eggshell quality. As a result, this study demonstrated that ozone treatments of 2, and especially 4 and 6 ppm concentration maintained eggshell quality during the storage. © 2015 Society of Chemical Industry. © 2015 Society of Chemical Industry.

  1. Comparison of two different breeding systems laying hens in relation to egg shell quality, II

    Directory of Open Access Journals (Sweden)

    Mária Angelovičová

    2014-11-01

    Full Text Available The aim of work was to follow up and statistically evaluate the selected quality indicators of egg shell according to two different breeding systems and different age of laying hens. An object of investigation were shell weight, share of the shell, strength and thickness of the shell for table eggs. There were used the laying hens of final hybrid ISA Brown reared in enriched cage system, and free range system. In both breeding systems were ensured the conditions with application of the welfare principles. There was used to feed a complete feed mixture HYD 10 in the both breeding systems.  The feeders were supplemented with feed by hand, daily and the same day was supplemented water to drinking troughs. Egg collection was hand in both breeding systems. This paper is a contribution to the solution of optimal breeding laying hens and production of high quality and safe production of table eggs. From the evaluation of the results was formulated conclusion, which shows that statistically significant (p ≤ 0.05 higher egg shell thickness was observed in the breeding free range system compared to the thickness of the egg shell in the breeding cage system, and in age 40 weeks of laying hens in both breeding systems compared to the thickness of the egg shell in age 30 weeks of laying hens. No statistically significant difference (p ≥ 0.05 was observed in egg shell weight between breeding cage system and free range system. Statistically significant (p ≤ 0.05 higher egg shell weight was observed in the age 40 weeks of laying hens in both breeding  systems compared to age 30 weeks of laying hens. There no statistically significant difference (p ≥ 0.05 was observed in the share of egg shell and egg shell strength between breeding cage system and free range system, nor between age 30 and 40 weeks of laying hens.

  2. Mother-Offspring Relations: Prey Quality and Maternal Size Affect Egg Size of an Acariphagous Lady Beetle in Culture

    Directory of Open Access Journals (Sweden)

    Eric W. Riddick

    2012-01-01

    Full Text Available We investigated mother-offspring relations in a lady beetle Stethorus punctillum Weise that utilizes spider mites as prey. Our objectives were to determine if (1 prey quality affects egg size, (2 maternal size correlates with egg size, and (3 egg size affects hatching success. We fed predators spider mites Tetranychus urticae Koch from lima bean Phaseolus lunatus L. foliage in the laboratory. Mothers of unknown body size offered high rather than low quality spider mites since birth produced larger eggs. Mothers of known body size offered only high quality spider mites, produced eggs of variable size, but mean egg size correlated positively with hind femur length. Mothers laid their eggs singly, rather than in batches, and eggs were large relative to femur size. Egg size did not affect hatch success; mean hatch rate exceeded 95% regardless of egg size. In conclusion, the quality of prey consumed by S. punctillum mothers while in the larval stage can affect their size as adults and, consequently, the size of their eggs. The behavior of laying eggs singly, the positive relationship between maternal size and mean egg size, and the high rate of egg hatch suggest that S. punctillum mothers invest heavily in offspring.

  3. PERFORMANCE AND EGGS QUALITY OF HENS OF GENETIC RESOURCES OF THE CZECH REPUBLIC AND SLOVAKIA

    Directory of Open Access Journals (Sweden)

    Zdeněk Ledvinka

    2015-03-01

    Full Text Available The aim of this study was to assess the performance and technological values of eggs of Czech Hen and Oravka breeds housed on litter. The assumption was that the genotype of hens affects their performance, egg weight, and parameters of yolk, albumen and eggshell quality. A total of 30 pullets of Czech Hen breed and 30 pullets of Oravka breed in the age of 17 weeks were included in to the experiment. Environmental conditions corresponded to the standard requirements for laying hens in observed type of housing system. Hen day egg production, egg yield, daily feed consumption per hen, feed consumption per egg and egg weight, egg shape index, proportion and index of yolk and albumen,yolk colour and Haugh units score were monitored in the experiment. From the parameters of eggshell, proportion, thickness, strength and colour of eggshell were observed. Performance parameters of laying hens weren't affected by the genotype of hens. Czech Hen breed showed insignificantly the higher value in all indicators. The significantly (P≤0.01 and P≤0.001 better values of eggshell quality parameters were detected in Czech Hen breed. We found out that Czech Hen breed had also statistically significantly lighter colour of eggshell. There were no significant interbreed differences in egg weight, proportion of yolk and albumen. The egg shape index was significantly higher in Oravka. Index of yolk and albumen was also significantly (P≤0.001 higher in Oravka. Haugh units score, that reflect the quality of the eggs, were found significantly (P≤0.001higher in Oravka too. On the other hand, yolk colour was detected significantly (P≤0.001 darker for the Czech Hen.

  4. Egg Speckling Patterns Do Not Advertise Offspring Quality or Influence Male Provisioning in Great Tits

    Science.gov (United States)

    Stoddard, Mary Caswell; Fayet, Annette L.; Kilner, Rebecca M.; Hinde, Camilla A.

    2012-01-01

    Many passerine birds lay white eggs with reddish brown speckles produced by protoporphyrin pigment. However, the function of these spots is contested. Recently, the sexually selected eggshell coloration (SSEC) hypothesis proposed that eggshell color is a sexually selected signal through which a female advertises her quality (and hence the potential quality of her future young) to her male partner, thereby encouraging him to contribute more to breeding attempts. We performed a test of the SSEC hypothesis in a common passerine, the great tit Parus major. We used a double cross-fostering design to determine whether males change their provisioning behavior based on eggshell patterns they observe at the nest. We also tested the assumption that egg patterning reflects female and/or offspring quality. Because birds differ from humans in their color and pattern perception, we used digital photography and models of bird vision to quantify egg patterns objectively. Neither male provisioning nor chick growth was related to the pattern of eggs males observed during incubation. Although heavy females laid paler, less speckled eggs, these eggs did not produce chicks that grew faster. Therefore, we conclude that the SSEC hypothesis is an unlikely explanation for the evolution of egg speckling in great tits. PMID:22815730

  5. Effect of Some Egg Quality Traits on Hatching Results in Brown Pure Lines

    Directory of Open Access Journals (Sweden)

    İsmail Durmuş

    2016-09-01

    Full Text Available This study was conducted to determine the influence of eggshell thickness, albumen height, yolk height and haugh unit on hatching results. A total of 746 eggs, which were obtained and evaluated for egg quality parameters from 100 brown pure line hens of 42 weeks of age, were used. Eggs were collected from each hen for 12 days and individual incubation was carried out. Eggs were grouped based on quality parameters and evaluated accordingly. The findings suggested that hatchability, hatchability of fertile eggs, early, mid and late embryonic mortality did not differ in terms of haugh unit, albumen height, eggshell thickness and yolk height groups. However, early embryonic mortality was found different between the yolk height groups. No relationship was determined among albumen height, haugh unit, eggshell thickness and hatching results. There was no relation between yolk height and hatchability of fertile eggs, hatchability, mid and late embryonic mortalities but was a positive correlation with early embryonic mortality. The results of the present study demonstrate that egg quality parameters studied here had no influence on hatching results except that early embryonic mortality increased with the yolk height.

  6. Egg speckling patterns do not advertise offspring quality or influence male provisioning in great tits.

    Directory of Open Access Journals (Sweden)

    Mary Caswell Stoddard

    Full Text Available Many passerine birds lay white eggs with reddish brown speckles produced by protoporphyrin pigment. However, the function of these spots is contested. Recently, the sexually selected eggshell coloration (SSEC hypothesis proposed that eggshell color is a sexually selected signal through which a female advertises her quality (and hence the potential quality of her future young to her male partner, thereby encouraging him to contribute more to breeding attempts. We performed a test of the SSEC hypothesis in a common passerine, the great tit Parus major. We used a double cross-fostering design to determine whether males change their provisioning behavior based on eggshell patterns they observe at the nest. We also tested the assumption that egg patterning reflects female and/or offspring quality. Because birds differ from humans in their color and pattern perception, we used digital photography and models of bird vision to quantify egg patterns objectively. Neither male provisioning nor chick growth was related to the pattern of eggs males observed during incubation. Although heavy females laid paler, less speckled eggs, these eggs did not produce chicks that grew faster. Therefore, we conclude that the SSEC hypothesis is an unlikely explanation for the evolution of egg speckling in great tits.

  7. Egg size and offspring quality: a meta-analysis in birds.

    Science.gov (United States)

    Krist, Miloš

    2011-08-01

    Parents affect offspring fitness by propagule size and quality, selection of oviposition site, quality of incubation, feeding of dependent young, and their defence against predators and parasites. Despite many case studies on each of these topics, this knowledge has not been rigorously integrated into individual parental care traits for any taxon. Consequently, we lack a comprehensive, quantitative assessment of how parental care modifies offspring phenotypes. This meta-analysis of 283 studies with 1805 correlations between egg size and offspring quality in birds is intended to fill this gap. The large sample size enabled testing of how the magnitude of the relationship between egg size and offspring quality depends on a number of variables. Egg size was positively related to nearly all studied offspring traits across all stages of the offspring life cycle. Not surprisingly, the relationship was strongest at hatching but persisted until the post-fledging stage. Morphological traits were the most closely related to egg size but significant relationships were also found with hatching success, chick survival, and growth rate. Non-significant effect sizes were found for egg fertility, chick immunity, behaviour, and life-history or sexual traits. Effect size did not depend on whether chicks were raised by their natural parents or were cross-fostered to other territories. Effect size did not depend on species-specific traits such as developmental mode, clutch size, and relative size of the egg, but was larger if tested in captive compared to wild populations and between rather than within broods. In sum, published studies support the view that egg size affects juvenile survival. There are very few studies that tested the relationship between egg size and the fecundity component of offspring fitness, and no studies on offspring survival as adults or on global fitness. More data are also needed for the relationships between egg size and offspring behavioural and

  8. Effect of production system and flock age on eggshell and egg internal quality measurements.

    Science.gov (United States)

    Samiullah, Sami; Omar, Amal Saleh; Roberts, Juliet; Chousalkar, Kapil

    2017-01-01

    Egg quality was measured in eggs from different flocks that were reared together and then allocated to different production systems. Eggs were processed for measurements of eggshell and egg internal quality variables, scoring of ultrastructural mammillary layer features, completeness of cuticle cover, and protoporphyrin IX (PP IX) quantification. There was a significant main effect (P egg weight, and egg internal quality and significant effects of flock age on most measurements. The mammillary layer ultrastructural variables showed no clear relationship with production system and flock age. However, there was a significant interaction between production system and flock age for mammillary cap, early and late fusions. Cuticle cover ([Formula: see text]), was significantly higher in barn eggs (19.20), followed by free range (17.57), and cage eggs (15.99). Completeness of cuticle cover was significantly higher in eggs from the 44 week old flock than for 64 week and 73 week old flocks. For eggshells with cuticle intact, there was a significant main effect of both production system and flock age, and significant interaction between the two, for shell reflectivity, L*a*b* values and amount of PP IX. For PP IX, when this difference was calculated for the cuticle alone, there were no statistically significant differences. In 1 g of shell with and without cuticle, there was more PP IX in cage eggs (9.49 × 10 -8 , 7.90 × 10 -8  mM) followed by free range (8.24 × 10 -8 , 6.90 × 10 -8  mM), and barn eggs (8.64 × 10 -8 , 7.28 × 10 -8  mM). Similar trends were recorded for the amount of PP IX in 1 g of cuticle, but the difference was not statistically significant. The amount of PP IX decreased significantly with increasing flock age. Comparing the cage and barn production systems at 68 week of flock age, there was no difference for the amount of PP IX in shell with or without cuticle, or in the cuticle alone. Eggs from the cage production system were darker in color

  9. Effect of Dietary Sodium Nitrate Consumption on Egg Production, Egg Quality Characteristics and Some Blood Indices in Native Hens of West Azarbaijan Province

    Directory of Open Access Journals (Sweden)

    H. Safary

    2012-11-01

    Full Text Available The aim of the study was to evaluate the effect of sodium nitrate consumption on egg quality and quantity, and some blood parameters of native breeder hens of West Azerbaijan province. One hundred native hens were used from wk 25 to 32 of age. These birds were divided into two groups. One group was fed the control diet (CD but the other fed the same diet supplemented with 4.2 g/kg sodium nitrate (ND. After 2 wks of adaptation, eggs were collected daily and egg mass and egg production were measured weekly for five weeks. To assess the egg quality parameters, two eggs from each replicate pen were collected for three consecutive days each week. At the end of experimental period (wk 32 of age, blood samples of 5 birds per replicate were collected from the wing vein into anticoagulant tubes. Dietary sodium nitrate didn’t affect the egg production, shell stiffness, shell thickness and Haugh unit (p>0.05 but it decreased the both egg production and egg mass during the last three weeks (wks 30, 31 and 32 (p0.05. No effect of time or treatment×time were observed for shell stiffness (p>0.05. Over time, shell thickness was decreased while Haugh unit increased (p0.05. Sodium nitrite decreased both the TAC and TC at wk 32 of age (p<0.001. It was concluded that the lower body antioxidant capacity of nitrate fed birds resulted in the lower performance (egg weight, egg production and egg mass.

  10. Urban farmers' markets: accessibility, offerings, and produce variety, quality, and price compared to nearby stores.

    Science.gov (United States)

    Lucan, Sean C; Maroko, Andrew R; Sanon, Omar; Frias, Rafael; Schechter, Clyde B

    2015-07-01

    Most food-environment research has focused narrowly on select stores and restaurants. There has been comparatively less attention to non-storefront food sources like farmers' markets (FMs), particularly in urban communities. The objective of the present study was to assess FMs' potential contribution to an urban food environment in terms of specific foods offered, and compare FM accessibility as well as produce variety, quality, and price to that of nearby stores. Investigators conducted a detailed cross-sectional assessment of all FMs in Bronx County, NY, and of the nearest store(s) selling produce within a half-mile walking distance (up to two stores per FM). The study included 26 FMs and 44 stores. Investigators assessed accessibility (locations of FMs and stores relative to each other, and hours of operation for each), variety (the number and type of all food items offered at FMs and all fresh produce items offered at stores), quality (where produce items were grown and if they were organic), and price (including any sales prices or promotional discounts). Analyses included frequencies, proportions, and variable distributions, as well as mixed-effect regressions, paired t-tests, and signed rank tests to compare FMs to stores. Geographic information systems (GIS) allowed for mapping of FM and store locations and determining street-network distances between them. The mean distance between FMs and the nearest store selling fresh produce was 0.15 miles (range 0.02-0.36 miles). FMs were open substantially fewer months, days, and hours than stores. FMs offered 26.4 fewer fresh produce items on average than stores (p values operation. Copyright © 2015 Elsevier Ltd. All rights reserved.

  11. Determining Tocotrienol Rich Fraction Effects on Laying, Mortality and Egg Quality Parameters

    Directory of Open Access Journals (Sweden)

    Mardhati, M.

    2016-12-01

    Full Text Available The public interest and awareness in healthier lifestyle has increased the demand of functional food, nutraceuticals and designer foods, which has resulted in the creation of new foods in marketplace, for instance designer and specialty eggs. A feeding trial was carried out to evaluate the laying performance of H&N layer chickens fed diets supplemented with tocotrienol rich fraction (TRF, as well as to quantify tocopherol and tocotrienol accumulation in eggs and their effect on egg quality. A total of 300 H&N laying hens (17-wk old were randomly allocated to 50 battery cages with 6 birds per cage. The birds were assigned equally to 6 different treatment diets; commercial diet (F1, corn-soy based diet (F2, corn-soy based diet added with 25ppm (F3, 50ppm (F4, 75ppm (F5 and 100ppm (F6 of tocotrienol rich fraction (TRF. Egg production and egg quality measurements were not significantly different (P>0.05 between treatments. Egg yolk from hens fed TRF supplemented diets contained more tocotrienol compared to those fed corn-soy based diet (P0.05. As feeding time progressed, the tocotrienol content tended to accumulate in the egg yolks (P<0.05.

  12. Replacing soybean oil with increasing levels of soybean acid oil in diets of coturnix quails (Coturnix coturnix coturnix) and the effects on egg quality.

    Science.gov (United States)

    Roll, Aline A P; Forgiarini, Juliana; Xavier, Eduardo G; Lopes, Débora C N; Roll, Victor F B; Rutz, Fernando

    2018-01-01

    The effects of increasing levels of soybean acid oil in diets of quails on the quality of eggs were evaluated over a period of 56 days. A completely randomized design with five treatment levels of soybean acid oil (0, 2, 4, 6, and 8%) as a replacer for soybean oil and eight replicates of two quails each were used. A total of 240 fresh eggs were used for quality analysis, and 400 eggs were stored at 23ºC over a period of 0, 7, 14, 21, and 28 days for analysis of shelf-life. Polynomial regression and ANOVA with repeated measurements and Tukey´s tests were used. Soybean acid oil linearly increased the intensity of red (a* = -5.26 + 0.14 x, R2 = 0.89, P = 0.01) and yellow (b* = 42.32 + 0.44 x, R2 = 0.88 P = 0.01). All other variables of egg quality were not affected by the treatments, with the exception of sensory attributes, such as odor and aftertaste, which were more pronounced with soybean acid oil. In conclusion, soybean acid oil affects the intensity of yellow and red color of the yolk. Trained assessors detected differences in odor and aftertaste of eggs when soybean acid oil was included in the quail diet.

  13. Replacing soybean oil with increasing levels of soybean acid oil in diets of coturnix quails (Coturnix coturnix coturnix and the effects on egg quality

    Directory of Open Access Journals (Sweden)

    ALINE A.P. ROLL

    2017-10-01

    Full Text Available ABSTRACT The effects of increasing levels of soybean acid oil in diets of quails on the quality of eggs were evaluated over a period of 56 days. A completely randomized design with five treatment levels of soybean acid oil (0, 2, 4, 6, and 8% as a replacer for soybean oil and eight replicates of two quails each were used. A total of 240 fresh eggs were used for quality analysis, and 400 eggs were stored at 23ºC over a period of 0, 7, 14, 21, and 28 days for analysis of shelf-life. Polynomial regression and ANOVA with repeated measurements and Tukey´s tests were used. Soybean acid oil linearly increased the intensity of red (a* = -5.26 + 0.14 x, R2 = 0.89, P = 0.01 and yellow (b* = 42.32 + 0.44 x, R2 = 0.88 P = 0.01. All other variables of egg quality were not affected by the treatments, with the exception of sensory attributes, such as odor and aftertaste, which were more pronounced with soybean acid oil. In conclusion, soybean acid oil affects the intensity of yellow and red color of the yolk. Trained assessors detected differences in odor and aftertaste of eggs when soybean acid oil was included in the quail diet.

  14. Hen genetic strain and extended cold storage influence on physical egg quality from cage-free aviary housing system.

    Science.gov (United States)

    Jones, D R; Karcher, D M; Regmi, P; Robison, C O; Gast, R K

    2018-04-02

    In the United States, there is an increase in need for cage-free eggs in retail and food manufacturing sectors. Understanding the impact of cage-free systems and the corresponding management on egg quality is pertinent as the U.S. industry adapts existing housing and builds new cage-free housing structures. A study was conducted comparing 2 brown shell and 2 white shell hen strains housed in a cage-free aviary system. Each set of eggs were placed in cold storage and assessed at 0, 2, 4, 8, and 12 wk. Eggs were collected at 21, 31, 42, and 60 wk of hen age. A full profile of physical quality measurements was conducted on up to 18 intact eggs for each hen strain/egg storage/hen age combination. Egg weight increased approximately 10 g for brown shell and 14 g for white shell eggs as hens aged. Many of the properties monitored were significantly impacted by all 3 main effects (hen strain, egg storage, and hen age) resulting in 3-way interactions. A brown and a white shell strain had stronger shells (44 N; P study also determined volume of shell, total length, maximum width, and percent length at maximum width to more accurately indicate egg shape than shape index. One brown shell strain produced eggs with the most consistent shape characteristics over the hen ages monitored. White shell eggs from the cage-free aviary housing produced the highest whole-egg total solids between 31 to 60 wk of hen age, whereas brown shell eggs resulted in the most consistent level of whole-egg total solids (22-23.5%). The brown and white shell strains in the current study produce cage-free aviary eggs with distinctive physical quality attributes. The outcomes from this study can be utilized by the U.S. egg industry in planning management strategies and market placement of cage-free eggs.

  15. The Effects of Hyperthyroidism and Hypothyroidism Over the Egg Quality in Japanese Quails (Coturnix coturnix Japonica)

    OpenAIRE

    ÖZCAN, Mukaddes; ÇÖTELİOĞLU, Ülker

    1998-01-01

    In this study, the influence of hyperthyroidism and hypothyroidism on the egg quality in 5 week-female Japanese quails was investigated. Hyperthyroidsm and hypothyroidism were achieved by mixing 0.4 mg/100 g. levatrocsyn-sodium and % 0.2 g. propylthiouracil (PTU) in to the food during the 5 weeks period, respectively. It was found that egg weight, albumen weight, shell weight and shell thickness values in both trial groups reduced (P

  16. Comparison of two different breeding systems laying hens in relation to egg shell quality, II

    OpenAIRE

    Mária Angelovičová; Viera Ševčíková; Marek Angelovič; Ondřej Bučko

    2014-01-01

    The aim of work was to follow up and statistically evaluate the selected quality indicators of egg shell according to two different breeding systems and different age of laying hens. An object of investigation were shell weight, share of the shell, strength and thickness of the shell for table eggs. There were used the laying hens of final hybrid ISA Brown reared in enriched cage system, and free range system. In both breeding systems were ensured the conditions with application of the welfar...

  17. The Effect of Store Brand Image and Service Quality Towards Customer Loyalty at Freshmart Superstore Manado

    OpenAIRE

    Tumiwa, Johan; Lapian, S. L. H. V. Joyce; Kumowal, Rivo Christian

    2016-01-01

    Customer loyalty has been recognized as the dominant factor in a superstore€™s success. The customer loyalty subject has become of increased interest to most superstore in the competitive situation over the last few years. Store brand image and service quality describes what customers are looking for that is likely to be advantageous to the Superstore. The objectives of this research are to analyze the effect of store brand image, and service quality towards consumer loyalty, simultaneously a...

  18. Effects of illumination on store atmosphere, price and quality perception, and shopping intention

    DEFF Research Database (Denmark)

    Zielke, Stephan; Schielke, Thomas

    This paper analyzes how store lighting influences store atmosphere, price and quality perception, and the intention to shop in a retail store. A first experiment shows how the number and brightness of light beams influence these dependent variables. Results demonstrate that especially extreme...... combinations of both variables result in higher pleasure and shopping intention, while for price and quality perception different effects cancel each other out. A second experiment shows that orange light results in greater pleasure and shopping intention compared to blue light, when colors are saturated...

  19. Effects of energy concentration of the diet on productive performance and egg quality of brown egg-laying hens differing in initial body weight.

    Science.gov (United States)

    Pérez-Bonilla, A; Novoa, S; García, J; Mohiti-Asli, M; Frikha, M; Mateos, G G

    2012-12-01

    The influence of AME(n) concentration of the diet on productive performance and egg quality traits was studied in Hy-Line brown egg-laying hens differing in initial BW from 24 to 59 wk of age. Eight treatments were arranged factorially with 4 diets varying in energy content (2,650, 2,750, 2,850, and 2,950 kcal of AME(n)/kg) and 2 initial BW of the hens (1,733 vs. 1,606 g). Each treatment was replicated 5 times (13 hens per replicate), and all diets had similar nutrient content per unit of energy. No interactions between energy content of the diet and initial BW of the hens were detected for any trait. An increase in energy concentration of the diet increased (linear, P feed conversion ratio per kilogram of eggs (linear, P Feed intake (114.6 vs. 111.1 g/hen per day), AME(n) intake (321 vs. 311 kcal/hen per day), egg weight (64.2 vs. 63.0 g), and egg mass (58.5 vs. 57.0 g) were higher for the heavier than for the lighter hens (P feed conversion ratio per kilogram of eggs and energy efficiency were not affected. Eggs from the heavier hens had a higher proportion of yolk and lower proportion of albumen (P hens. Consequently, the yolk-to-albumen ratio was higher (P hens. It is concluded that brown egg-laying hens respond with increases in egg production and egg mass to increases in AME(n) concentration of the diet up to 2,850 kcal/kg. Heavy hens had higher feed intake and produced heavier eggs and more egg mass than light hens. However, feed and energy efficiency were better for the lighter hens.

  20. Egg Intake and Dietary Quality among Overweight and Obese Mexican-American Postpartum Women

    Directory of Open Access Journals (Sweden)

    Sonia Vega-López

    2015-10-01

    Full Text Available Despite their low cost and high nutrient density, the contribution of eggs to nutrient intake and dietary quality among Mexican-American postpartum women has not been evaluated. Nutrient intake and dietary quality, as assessed by the Healthy Eating Index 2010 (HEI-2010, were measured in habitually sedentary overweight/obese (body mass index (BMI = 29.7 ± 3.5 kg/m2 Mexican-American postpartum women (28 ± 6 years and compared between egg consumers (n = 82; any egg intake reported in at least one of three 24-h dietary recalls and non-consumers (n = 57. Egg consumers had greater intake of energy (+808 kJ (193 kcal or 14%; p = 0.033, protein (+9 g or 17%; p = 0.031, total fat (+9 g or 19%; p = 0.039, monounsaturated fat (+4 g or 24%; p = 0.020, and several micronutrients than non-consumers. Regarding HEI-2010 scores, egg consumers had a greater total protein foods score than non-consumers (4.7 ± 0.7 vs. 4.3 ± 1.0; p = 0.004, and trends for greater total fruit (2.4 ± 1.8 vs. 1.9 ± 1.7; p = 0.070 and the total composite HEI-2010 score (56.4 ± 12.6 vs. 52.3 ± 14.4; p = 0.082. Findings suggest that egg intake could contribute to greater nutrient intake and improved dietary quality among postpartum Mexican-American women. Because of greater energy intake among egg consumers, recommendations for overweight/obese individuals should include avoiding excessive energy intake and incorporating eggs to a nutrient-dense, fiber-rich dietary pattern.

  1. PRODUCTIVITY OF LAYERS AND EGG QUALITY IN FREE RANGE AND CAGE SYSTEM OF HOUSING

    Directory of Open Access Journals (Sweden)

    Đ. Senčić

    2006-12-01

    Full Text Available The research was conducted with two groups of Lohmann Brown hybrid layers. Production of eggs lasted for 52 weeks. A control group of layers was kept in the conventional housing system, that is, in cages, while experimental group was kept in the free range system. Layers from the free range system, compared to those kept in cages, laid fewer eggs, (266:295, they consumed more feed on daily basis (129 g : 115 g, more feed per kilogram of egg weight (2.83 kg : 2.35 kg, they had higher mortality rate (6.80 % : 5.50 % and lower end of lay body weight (1.95 kg : 2.10 kg. Eggs from free range layers, compared to those from the cages system, had significantly (P0.05 were determined between the free range and the cages system of housing hens. Considering somewhat lower productivity and higher mortality rate of hens, higher feed consumption per kilogram of egg mass, but also better quality of eggs, profitability of egg production in the free range system will depend, to the maximum extent, on market evaluation of the production.

  2. Influence of Zeolite on fatty acid composition and egg quality in Tunisian Laying Hens

    Science.gov (United States)

    2012-01-01

    Background The health benefits of omega-3 and omega-6 polyunsaturated fatty acids (PUFA) are generally recognized. Unfortunately, in most Mediterranean countries, the recommended daily intake of these compounds is rarely met. Therefore, enrichment of commonly occurring foods can boost intake of these fatty acids. In this regard, eggs are an interesting target, as they form an integral part of the diet. Result Zeolite (Clinoptilolites) was added to Laying Hens feed at concentrations 1% or 2% and was evaluated for its effects on performance of the production and on egg quality. The Laying Hens were given access to 110 g of feed mixtures daily that was either a basal diet or a ‘zeolite diet’ (the basal diet supplemented with clinoptilolite at a level of 1% or 2%). It was found that zeolite treatment had a positive and significatif (p zeolite supplementation tended to/or has no significant effects on total egg, eggshell, yolk and albumen weights. It was found also that zeolite mainly increases level of polyunsaturated fatty acids in egg. Conclusion This study showed the significance of using zeolite, as a feed additive for Laying Hens, as part of a comprehensive program to control egg quality and to increase level of polyunsaturated fatty acids on egg. PMID:22676421

  3. Texture and quality properties of Chinese fresh egg noodles formulated with green seaweed (Monostroma nitidum) powder.

    Science.gov (United States)

    Chang, H C; Wu, L-C

    2008-10-01

    The objective of this study was to compare fresh Chinese noodles made with different levels of green seaweed. Green seaweed powder was incorporated in proportions of 4%, 6%, and 8% in noodles, which were made with or without additional eggs. Proximate compositions, cooking properties, textural intensities, and sensory qualities of noodles were assessed. The addition of seaweed powder increased the crude fiber contents of raw fresh noodles; the fiber contents were 0.100%+/- 0.015 to 0.449%+/- 0.013 for noodles made with eggs from 0% to 8% additional seaweed and 0.247%+/- 0.018 to 0.344%+/- 0.021 for those without eggs. Higher cooking yields were found in the noodles, due to water absorption during cooking by the fibers and polysaccharides in the seaweed. Significantly higher cooking yields (P seaweed powder; water uptake readings measured 2.39 +/- 0.38 and 2.43 +/- 0.25 g H(2)O/g noodle for samples made without and with eggs, respectively. Higher water absorption by the seaweed led to softer and spongier textural intensities in the noodles. Breaking energy of cooked fresh egg noodles were 28.94 +/- 3.42 to 6.43 +/- 1.01 N x mm for 8% to 0% additional seaweed, and the intensities decreased as the amount of seaweed increased; the same pattern was observed in noodles without eggs, where readings were 8.66 +/- 1.02 to 3.49 +/- 0.25 N x mm. Capacities of extensibility measured 61.81 +/- 2.04 to 30.74 +/- 0.90 mm for fresh egg noodles with additional seaweed powder from 0% to 8%, and 47.46 +/- 2.41 to 28.36 +/- 2.25 mm for cooked fresh noodles without eggs. The results from Pearson's correlation analysis indicated that textural parameters were influenced not only by additional eggs and seaweed powder, but also by cooking properties.

  4. Egg quality in layers housed in different production systems and submitted to two environmental conditions

    Directory of Open Access Journals (Sweden)

    JAD Barbosa Filho

    2006-03-01

    Full Text Available The production system using cages is a highly polemical issue in Europe, because of the space restriction imposed to laying hens. It is considered that the cage system might compromise important comfort movements, welfare and egg quality. This study evaluated egg quality and welfare of two strains of hens housed in a conventional system (battery laying cages or litter system with nest and perches, and submitted to heat stress or comfort conditions. Two groups of 20 birds (10 Hy-line W36 and 10 Hy-line Brown were submitted to two environmental conditions (26°C and 60% RH or 35°C and 70% RH and two housing systems (cages or litter in the early production phase. Egg quality was analyzed based on egg weight, eggshell thickness, specific gravity, and Haugh units. Yolk and shell contamination by Salmonella sp was also assessed. A significant (p<0.05 reduction in quality parameters was observed in eggs produced by laying hens under heat stress, mainly in the birds housed in cages.

  5. The effect of the clove essential oil to the production and quality of lyaing hens eggs

    Directory of Open Access Journals (Sweden)

    Henrieta Arpášová

    2017-05-01

    Full Text Available The aim of this study was to determinate the effect of the clove (Syzygium aromaticum essential oil to the egg production parameters and egg quality of laying hens. A total of 40 Lohmann Brown laying hens were divided into 4 groups (n = 10. The laying hens were fed 20 weeks ad libitum. The control group was fed with complete feed mixtures without additives. The first group of hens was fed a diet with complete feed mixtures with 0.3 mg.kg-1 of clove essential oil. The second group of hens was fed a diet with complete feed mixtures with 0.6 mg.kg-1 of clove oil and the third group of hens was fed a diet with complete feed mixtures with 1 mg.kg-1 of clove oil. Egg production, egg weight (g, specific egg weight, albumen weight (g, albumen index, Haugh Units (HU, yolk weight (g, yolk index, yolk color (HLR were studied. The results show that the addition of clove oil, especially in the group of laying hens with the addition of 1 mg.kg-1 clove oil had no significantly different (P>0.05 to the egg production (the order of the groups: 90.3; 91.8; 91.3; 92.6 %. In egg weight were found no significant differences between groups. The addition of 1 mg.kg-1 clove oil had significant (P>0.05 influenced the albumen index and the addition of 0.6 mg.kg-1 and 1 mg.kg-1 clove oil had significant (P>0.05 influenced Haugh units. In the control group was found not significant (P>0.05 different in yolk weight compared with other groups. In the other parameters of egg quality (albumen weight, yolk index, yolk colour with the addition of clove oil were found no significant differences between groups.

  6. The Effect of Calcium and Available Phosphorus Levels on Performance, Egg Quality and Bone Characteristics of Japanese Quails at End of the Egg-Production Phase

    Directory of Open Access Journals (Sweden)

    CLN Ribeiro

    Full Text Available ABSTRACT Calcium (Ca and available phosphorus (avP requirements for egg production are different between the beginning and the end of the egg-production cycle. The objective of this study was to estimate the Ca and avP requirements of Japanese quails at end of the production phase. In total, 256 Japanese quails with 48 weeks of age were randomly distributed in 2 x 2 factorial arrangement consisting of two Ca levels (29 and 38 g/kg and two avP levels (1.5 and 3.0 g/kg, totaling four treatments with eight replicates of eight hens each. The variables evaluated were feed intake (FI; egg production (EP; marketable egg production (MEP; egg weight (EW; egg mass (EM; feed conversion ratio per egg mass (FCRM; feed conversion ratio per dozen eggs (FCRD; livability (L; yolk weight (YW, albumen weight (AW, eggshell weight (SW; yolk percentage (YP, albumen percentage (AP, eggshell percentage (SP, specific egg weight (SEW; bone calcium percentage (BCa, bone phosphorus percentage (BP, bone ash weight (Bash and bone ash percentage (PBash. There was no interaction between Ca and avP levels for any of the evaluated parameters, except for SEW. Quail performance was not influenced by the treatments, except for MEP. Bone characteristics were not influenced by the tested dietary Ca and avP levels. However, SW and SP increased and AP decreased as dietary Ca level increased. The dietary supplementation of 38 g Ca/kg and 3.0 g avP/kg may increase marketable egg production and the egg quality of Japanese quails at end of the production cycle.

  7. Quality of Brazil nuts stored in forced aeration silos

    Directory of Open Access Journals (Sweden)

    David Aquino da Costa

    2016-06-01

    Full Text Available ABSTRACT The traditional system of collection and storage of Brazil nut compromises seriously the quality of these almonds as it contributes to the high incidence of contaminants, like fungi of the genus Aspergillus, which can produce aflatoxins. In this study, the objective was to evaluate the influence of the storage period in studied conditions, on the physicochemical characteristics and on the microbiological contamination of Brazil nuts. The experimental was designed as completely randomized, considering as treatments the storage period (0 - control, 30, 60, 90, 120 and 150 days with four replicates of 3 kg of Brazil nuts each. The samples were submitted to physicochemical and microbiological analysis. It was observed that almonds submitted to the storage had their moisture content reduced by 78.2% at 150 days of storage, however, this reduction was not fast enough to avoid surface contamination by filamentous and potentially aflatoxins producing fungi. The critical period of contamination occurred on the first 30 days of storage when there was an increase of the studied fungi, as well as B1 and total aflatoxin. The studied storage conditions were four times more effective in reducing the product moisture content than the traditional methods, however, pre-drying is necessary to avoid contamination of the product.

  8. THE INFLUENCE OF SERVICE QUALITY AND STORE ATMOSPHERE ON CUSTOMER SATISFACTION

    Directory of Open Access Journals (Sweden)

    Miswanto Miswanto

    2017-09-01

    Full Text Available This research examines the influence of service quality (tangibles, reliability, responsiveness, assurance, and empathy and store atmosphere on customer satisfaction and the influence of customer satisfaction on repurchase intention, trust, and word of mouth on customers of souvenir stores in Yogyakarta. Selection of the sample is done by using purposive sampling with one criterion: they have shopped in souvenir stores in Yogyakarta. Data are collected by using questionnaires and 200 souvenir store customers participate in this study. The data are analyzed by using Structural Equation Modeling (SEM with Amos computer program. The findings show that none of service quality’s dimension: tangibles and store atmosphere have positive influences on customer satisfaction.

  9. Nutritional modulation of health, egg quality and environmental pollution of the layers.

    Science.gov (United States)

    Wang, Jing; Yue, Hongyuan; Wu, Shugeng; Zhang, Haijun; Qi, Guanghai

    2017-06-01

    World egg production and consumption have been increasing for the past decades. Traditional strategies in poultry nutrition have made vital contributions to this great growth in quantity. However, current global issues should be considered in modern egg production such as growing populations and food security, food safety and quality, limited resources and environmental problems. The development of knowledge of poultry nutrition and modern biotechnology provides novel nutritional approaches to closely fit the requirement of pullets and laying hens, which will consequently decrease the nutrition excretion and maintain the lower cost of feed. Nutrition has also been widely accepted as a strategy to influence health and diseases of laying hens. The maintenance of good health is an important prerequisite for improving productivity and egg quality. In addition, there are many measures and strategies for minimizing the incidence of egg defects and providing a choice of lifestyle to enhance human health. This paper reviews current research progress on developing innovative technologies and strategies to maximize animal health and performance, improve the quality of egg products and minimize pollution caused by poultry production.

  10. Nutritional modulation of health, egg quality and environmental pollution of the layers

    Directory of Open Access Journals (Sweden)

    Jing Wang

    2017-06-01

    Full Text Available World egg production and consumption have been increasing for the past decades. Traditional strategies in poultry nutrition have made vital contributions to this great growth in quantity. However, current global issues should be considered in modern egg production such as growing populations and food security, food safety and quality, limited resources and environmental problems. The development of knowledge of poultry nutrition and modern biotechnology provides novel nutritional approaches to closely fit the requirement of pullets and laying hens, which will consequently decrease the nutrition emissions and maintain the lower cost of feed. Nutrition has also been widely accepted as a strategy to influence health and diseases of laying hens. The maintenance of good health is an important prerequisite for improving productivity and egg quality. In addition, there are many measures and strategies for minimizing the incidence of egg defects and providing a choice of lifestyle to enhance human health. This paper reviews current research progress on developing innovative technologies and strategies to maximize animal health and performance, improve the quality of egg products and minimize pollution caused by poultry production.

  11. Effect of Different Levels of L-Carnitine on the Productive Performance, Egg Quality, Blood Parameters and Egg Yolk Cholesterol in Laying Hens

    Directory of Open Access Journals (Sweden)

    Kazemi-Fard M

    2015-12-01

    Full Text Available This experiment was conducted to investigate the effects of different levels of L-carnitine on productive performance, egg quality and blood parameters in laying hens. Forty-eight Hy-Line W-36 egg Layers were weighed at 90 weeks of age and randomly allocated into 16 cages (three hens per cage. Four dietary treatments were prepared by supplementing L-carnitine (0, 50, 100 and 150 mg/kg of diet to corn-soybean meal diet and offered ad libitum to hens. After two weeks of acclimatization, the eggs were weighed daily and feed intake as well as egg quality traits were measured biweekly. At the end of the experiment, two hens from each cage were selected to determine blood parameters and two eggs from each replicate were collected for cholesterol analysis. Results showed that L-carnitine supplementation at 100 and 150 mg/kg significantly increased egg production and egg mass, but decreased yolk cholesterol content. Laying hens receiving diet containing 50 mg/kg L-carnitine had significantly higher Hough unit, but lower progesterone than the hens fed control diet (P < 0.05. The results of this study showed that supplementing hens' diet with L-carnitine had beneficial effects on productive performance and decreased yolk cholesterol concentration; so it can be used as an effective supplement in the diet of laying hens.

  12. The Importance of Store Image and Retail Service Quality in Private Brand Image-Building

    Directory of Open Access Journals (Sweden)

    Adi Alić

    2017-03-01

    Full Text Available Objective: The purpose of this research is to highlight the role which store image and retail service quality can play in private brand image-building in the context of an emerging market in South-Eastern Europe (i.e. Bosnia and Herzegovina. We propose to address this issue by seeking answers to the following questions: (1 Does a ‘halo effect’ take place between the store image and the private brand image? (2 How does consumer’s evaluation of the quality of the service delivered by a retailer affect the image of its private brand? Research Design & Methods: Data were collected through a field survey via the store-intercept method. The sample consisted of 699 customers of two large retail chains. The data were analysed using the Structural Equation Modelling technique. Findings: The findings of the present study suggest that store image and retail service quality are important factors in the formation of the image of product-branded products. Implications & Recommendations: This study offers some important insights for retailers who intend to develop their private brand. First, the image transfer from store brand to private brand suggests that retailers should consider the introduction of a private brand as a brand extension, with their stores as the parent brand. Second, we recommend that retailers put more emphasis on quality improvement initiatives related to the store environment attributes. Contribution & Value Added: This study enhances the discussion on the phenomenon of private branding by analysing the store-level factors which underpin the formation of private brand image in the context of less developed European markets.

  13. Egg quality traits and predictors of embryo and fry viability in red snapper Lutjanus campechanus

    Directory of Open Access Journals (Sweden)

    Agnès Bardon-Albaret

    2017-08-01

    Full Text Available The quality of red snapper eggs is highly variable and unpredictable in aquaculture, leading to high mortality during early larval rearing. In this work, the viability of red snapper eggs was monitored from fertilization until unfed larvae expired because of exhaustion of vitelline reserves to determine egg quality traits in this species. The spawns were obtained via strip spawning wild-caught females following hormonal induction with chorionic gonadotropin. Females were induced immediately after capture (wild group, n = 17 or held captive for the entire maturation period prior to induction (captive group, n = 7. Candidate predictors of egg quality measured on the female parent at the time of induction or on the spawn at ovulation were evaluated using correlation and multiple regression analysis. The fertilization rate, the hatching rate, and the duration of survival of unfed larvae post hatch were weakly correlated to each other (-0.23 < r < −0.08, revealing occurrence of distinct and independent components of egg quality. Spawns from captive females were characterized by a longer latency interval between hormonal induction and ovulation, lower fecundity, and lower hatching rates, as compared to those from wild females. Among the wild brood fish, a positive correlation was observed between the age of the female and the hatching rate. The best model optimized during stepwise multiple regression analysis of hatching rate data only explained 34% of the variance for this trait and no model could be optimized for the prediction of fertilization rate or the duration of survival post hatch. These results highlight the need to develop alternative egg quality measures to predict the viability of fry with confidence.

  14. The quality of eggs (organic and nutraceutical vs. conventional) and their technological properties.

    Science.gov (United States)

    Filipiak-Florkiewicz, Agnieszka; Deren, Katarzyna; Florkiewicz, Adam; Topolska, Kinga; Juszczak, Leslaw; Cieslik, Ewa

    2017-07-01

    The aim of the study was to compare the quality of commercially available eggs: organic (attested organic farm) - OE, nutraceutical (enriched in n-3 fatty acids) - NE, vs. conventional (cage raising system) - CE and their technological (emulsifying) properties. Their basic chemical composition (i.e., moisture, protein, fat, ash) as well as mineral (Na, K, Ca, Mg, Zn, Fe, Mn, Cu) contents were assessed, and fatty acid profiles were determined. Next, the suitability of the eggs for mayonnaise production was assessed.The yolk of organic eggs contained the highest protein (17.7 g/100 g), K (134.7 mg/kg), and Cu (0.15 mg/kg) levels. Meanwhile, the yolk of conventional eggs was the most abundant in Mg (14.6 mg/kg) and Fe (9.05 mg/kg), and the nutraceutical ones - in Ca (109.0 mg/kg) as well as Mn (0.26 mg/kg). Albumen of organic eggs contained the highest level of protein (13.0 g/100 g), whereas the nutraceutical ones contained the highest levels of - ash (1.2 g/100 g), K (150.2 mg/kg), Zn (0.11 mg/kg), and Mn (0.04 mg/kg). Nutraceutical eggs contained a higher amount of n-3 and monounsaturated fatty acids but also smaller saturated fatty acids content. This beneficial fatty acids profile is particularly important from the nutritional point of view. Despite the lack of differences in emulsifying properties among the studied eggs, the mayonnaises prepared on the basis of the nutraceutical eggs showed better stability. This attribute is very important for both the producer (during product transport) and the consumer (during dish preparation). © 2017 Poultry Science Association Inc.

  15. EGG QUALITY AND PRODUCTIVE PERFORMANCE OF LAYING HENS IN SECOND CYCLE OF POSTURE FED WITH AMINOACID CHELATED TRACE MINERALS

    OpenAIRE

    Leticia Souza Silva Carvalho; Daniela Reis Vilela; Naiara Simarro Fagundes; Yara Lucia Silva Souza; Evandro de Abreu Fernandes

    2016-01-01

    Abstract The goal of this research was to evaluate egg quality and performance of laying hens at the second laying cycle, fed with minerals from an organic source. The  control treatment consisted of  basal diet with inorganic trace minerals, whereas the other treatments consisted of organic copper, iron, manganese, and zinc at levels of 100%, 90%, 80%, and 70%. Physical and chemical analyses were performed to evaluate egg quality. The average egg weight reduced in the test diet; however, ...

  16. Inactivation of Salmonella in Shell Eggs by Hot Water Immersion and Its Effect on Quality.

    Science.gov (United States)

    Geveke, David J; Gurtler, Joshua B; Jones, Deana R; Bigley, Andrew B W

    2016-03-01

    Thermal inactivation kinetics of heat resistant strains of Salmonella Enteritidis in shell eggs processed by hot water immersion were determined and the effects of the processing on egg quality were evaluated. Shell eggs were inoculated with a composite of heat resistant Salmonella Enteritidis (SE) strains PT8 C405, 2 (FSIS #OB030832), and 6 (FSIS #OB040159). Eggs were immersed in a circulating hot water bath for various times and temperatures. Come-up time of the coldest location within the egg was 21 min. SE was reduced by 4.5 log at both hot water immersion treatments of 56.7 C for 60 min and 55.6 °C for 100 min. Decimal reduction times (D-values) at 54.4, 55.6, and 56.7 °C were 51.8, 14.6, and 9.33 min, respectively. The z-value was 3.07 °C. Following treatments that resulted in a 4.5 log reduction (56.7 °C/60 min and 55.6 °C/100 min), the surviving population of SE remained static during 4 wk of refrigerated storage. After processing under conditions resulting in 4.5 log reductions, the Haugh unit and albumen height significantly increased (P eggs by 4.5 log, but also significantly affected several egg quality characteristics. Published 2016. This article is a U.S. Government work and is in the public domain in the USA.

  17. Use of point-of-sale data to assess food and nutrient quality in remote stores.

    Science.gov (United States)

    Brimblecombe, Julie; Liddle, Robyn; O'Dea, Kerin

    2013-07-01

    To examine the feasibility of using point-of-sale data to assess dietary quality of food sales in remote stores. A multi-site cross-sectional assessment of food and nutrient composition of food sales. Point-of-sale data were linked to Australian Food and Nutrient Data and compared across study sites and with nutrient requirements. Remote Aboriginal Australia. Six stores. Point-of-sale data were readily available and provided a low-cost, efficient and objective assessment of food and nutrient sales. Similar patterns in macronutrient distribution, food expenditure and key food sources of nutrients were observed across stores. In all stores, beverages, cereal and cereal products, and meat and meat products comprised approximately half of food sales (range 49–57 %). Fruit and vegetable sales comprised 10.4 (SD 1.9) % on average. Carbohydrate contributed 54.4 (SD 3.0) % to energy; protein 13.5 (SD 1.1) %; total sugars 28.9 (SD 4.3) %; and the contribution of total saturated fat to energy ranged from 11.0 to 14.4% across stores. Mg, Ca, K and fibre were limiting nutrients, and Na was four to five times higher than the midpoint of the average intake range. Relatively few foods were major sources of nutrients. Point-of-sale data enabled an assessment of dietary quality within stores and across stores with no burden on communities and at no cost, other than time required for analysis and reporting. Similar food spending patterns and nutrient profiles were observed across the six stores. This suggests potential in using point-of-sale data to monitor and evaluate dietary quality in remote Australian communities.

  18. Mixed crude glycerin in laying hen diets: live performance and egg quality and fatty acid profile

    Directory of Open Access Journals (Sweden)

    CRA Duarte

    2014-12-01

    Full Text Available This study evaluated the performance and the quality and fatty acid profile of eggs from laying hens fed diets containing mixed crude glycerin (MCG; 80% vegetable fat + 20% animal fat. A total of 240 39-week-old Hy-Line W36 laying hens were distributed according to a completely randomized experimental design into six treatments consisting of graded MCG dietary inclusion levels (0, 1.5, 3.0, 4.5, 6.0, and 7.5%, with five replicates of eight birds each. Feed intake linearly decreased (p<0.05 with increasing MCG inclusion levels. The percentages of myristic, palmitic, and α-linolenic acids in the eggs linearly decreased as MCG dietary levels increased (p<0.05, while α-linoleic acid, polyunsaturated fatty acids (PUFA and ω-6/ω-3 ratio linearly increased. Excreta moisture linearly increased with increasing levels of MCG inclusion (p<0.05. MCG may be included in up to 7.5% in layer feeds without impairing performance or egg quality, but levels up to 5.54% reduce SFA egg content. However, the inclusion of MCG in layer diets increases ω-6/ω-3 ratio in the eggs.

  19. Nutritional Quality of Eggs of Amberlink and Hyline Layers Fed on Different Levels of Provitamin A-Biofortified Maize

    Directory of Open Access Journals (Sweden)

    GW Zeina

    Full Text Available ABSTRACT The study was conducted to determine the interaction of types of maize (Provitamin A-biofortified maize (PABM versus white maize and strain of laying birds (Amberlink and Hyline on nutritional quality of eggs. Twenty-one of each of Amberlink and Hyline laying hens were fed on three diets for 30 days. Birds were distributed in a 3 × 2 factorial arrangement constituting three diets (0, 50 or 100 % of PABM and two strains (Amberlink & Hyline. There was a diet × strain interaction on egg shell weight, average daily feed intake, egg production, egg weight and egg shell thickness. Eggs produced by layers under 100 % PABM had lighter eggshell weight and lower eggshell percentage. In contrast, eggs produced by layers under 50 % PABM diet had signi-ficantly higher eggshell percentage, heavier egg shell weight and thicker eggshell. As the level of PABM increased, the yellow and red hue (Hunter a* and b* values significantly increased while the lightness values (Hunter L* values decreased. As the level of PABM in the ration increased, the vitamin A content of the egg yolk also significantly increased. Assimilation of vitamin A from feed to egg yolk in Amberlink and Hyline hens was similar. Hence, egg enrichment with vitamin A can be achieved by using PABM in layers ration. The use of high level of PABM had a negative effect on the eggshell quality traits.

  20. The effects of egg and diacetyl tartaric acid esters of monoglycerides addition on gluten-free sorghum bread quality

    Science.gov (United States)

    The impact of whole egg addition (as is) at 20, 25, or 30% (flour basis) on sorghum bread quality was evaluated. The use of the antistaling agent diacetyl tartaric acid esters of monoglycerides (DATEM) at 0.5% (flour basis) at each of the egg addition levels was also studied. Evaluated quality facto...

  1. Quality characteristics of egg-reduced pound cakes following WPI and emulsifier incorporation

    NARCIS (Netherlands)

    Paraskevopoulou, A.; Donsouzi, S.; Nikiforidis, C.V.; Kiosseoglou, V.

    2015-01-01

    The effect of partial (50 wt%) or total liquid egg replacement by whey proteins in combination with emulsifiers, i.e. hydroxypropylmethylcellulose (HPMC) and sodium stearoyl-2-lactylate (SSL), on the quality of pound cakes was investigated. Cakes containing whey protein isolate (WPI) solutions of

  2. Oviposition and egg quality traits of dwarf and naked neck layers ...

    African Journals Online (AJOL)

    Oviposition and egg quality traits were studied in dwarf and naked neck layers in Maputo (Mozambique) during a 28-d period at 35 weeks of age. Birds were caged individually in a laying house with natural light and ventilation. Average daylight length during the study was 11.2 hr and minimum and maximum temperature ...

  3. Effect of cage tier and age on performance, egg quality and stress ...

    African Journals Online (AJOL)

    This study was conducted to investigate the effects of cage tier and age on performance characteristics of layer hybrids, egg quality and some stress parameters. Ninety laying hens (hybrid ATAK-S) of similar bodyweights were used in the experiment. They were housed in three-tier conventional battery cages (bottom, ...

  4. Availability, quality and price of produce in low-income neighbourhood food stores in California raise equity issues.

    Science.gov (United States)

    Gosliner, Wendi; Brown, Daniel M; Sun, Betty C; Woodward-Lopez, Gail; Crawford, Patricia B

    2018-06-01

    To assess produce availability, quality and price in a large sample of food stores in low-income neighbourhoods in California. Cross-sectional statewide survey. Between 2011 and 2015, local health departments assessed store type, WIC (Supplemental Nutrition Program for Women, Infants, and Children)/SNAP (Supplemental Nutrition Assistance Program) participation, produce availability, quality and price of selected items in stores in low-income neighbourhoods. Secondary data provided reference chain supermarket produce prices matched by county and month. t Tests and ANOVA examined differences by store type; regression models examined factors associated with price. Large grocery stores (n 231), small markets (n 621) and convenience stores (n 622) in 225 neighbourhoods. Produce in most large groceries was rated high quality (97 % of fruits, 98 % of vegetables), but not in convenience stores (25 % fruits, 14 % vegetables). Small markets and convenience stores participating in WIC and/or SNAP had better produce availability, variety and quality than non-participating stores. Produce prices across store types were, on average, higher than reference prices from matched chain supermarkets (27 % higher in large groceries, 37 % higher in small markets, 102 % higher in convenience stores). Price was significantly inversely associated with produce variety, adjusting for quality, store type, and SNAP and WIC participation. The study finds that fresh produce is more expensive in low-income neighbourhoods and that convenience stores offer more expensive, poorer-quality produce than other stores. Variety is associated with price and most limited in convenience stores, suggesting more work is needed to determine how convenience stores can provide low-income consumers with access to affordable, high-quality produce. WIC and SNAP can contribute to the solution.

  5. Effect of dietary protein sources on production performance, egg quality, and plasma parameters of laying hens

    Directory of Open Access Journals (Sweden)

    Xiaocui Wang

    2017-03-01

    Full Text Available Objective This study was conducted to evaluate the effects of dietary protein sources (soybean meal, SBM; low-gossypol cottonseed meal, LCSM; double-zero rapeseed meal, DRM on laying performance, egg quality, and plasma parameters of laying hens. Methods A total of 432 32-wk-old laying hens were randomly divided into 6 treatments with 6 replicates of 12 birds each. The birds were fed diets containing SBM, LCSM100, or DRM100 individually or in combination with an equal amount of crude protein (CP (LCSM50, DRM50, and LCSM50-DRM50. The experimental diets, which were isocaloric (metabolizable energy, 11.11 MJ/kg and isonitrogenous (CP, 16.5%, had similar digestible amino acid profile. The feeding trial lasted 12 weeks. Results The daily egg mass was decreased in the LCSM100 and LCSM50-DRM50 groups (p0.05 and showed increased yolk color at the end of the trial (p0.05. Conclusion Together, our results suggest that the LCSM100 or DRM100 diets may produce the adverse effects on laying performance and egg quality after feeding for 8 more weeks. The 100.0 g/kg LCSM diet or the148.7 g/kg DRM diet has no adverse effects on laying performance and egg quality.

  6. Egg quality of quails fed low methionine diet supplemented with betaine

    Science.gov (United States)

    Ratriyanto, A.; Indreswari, R.; Dewanti, R.; Wahyuningsih, S.

    2018-03-01

    This experiment investigated the effect of betaine supplementation to low methionine diet on egg quality of quails. A total of 340 laying quails (Coturnix coturnix japonica) was divided into 4 dietary treatments with 5 replicates of 17 quails each. The experiment was assigned in a completely randomized design. The four dietary treatments were the low methionine diet (0.3% methionine) without betaine supplementation and the low methionine diet supplemented with 0.07, 0.14, and 0.21% betaine. The experimental diets were applied for 8 weeks and the egg quality traits were measured at the age of 16 and 20 weeks. The data were subjected to analysis of variance, and when the treatment indicated significant effect, it was continued to orthogonal polynomial test to determine the optimum level of betaine. Increasing dietary levels of betaine increased the fat content of the egg with the linear regression of y = 11.0949 + 4.1914x (R2 = 0.18). However, supplementation of betaine did not affect protein content, yolk, albumen, and eggshell percentage. It can be concluded that betaine supplementation up to 0.21% to low methionine diet only had little effect in improving the quality traits of quail eggs.

  7. Exploring the Relationships among Service Quality, Satisfaction, Trust and Store Loyalty among Retail Customers

    Directory of Open Access Journals (Sweden)

    Çerri Shpëtim

    2012-12-01

    Full Text Available The purpose of the study is to investigate the relationships among service quality, satisfaction, trust, and store loyalty in a retailing context. All these variables have considerable importance on store performance, measured by financial indicators or market ones. The data were collected from a sample of 258 students at two universities in Albania, during the first quarter of 2012. The items included in the survey measured the variables of the study as well as demographic characteristics of the sample. Confirmatory factor analysis (CFA and structural equation modeling (SEM were used to evaluate the hypotheses regarding relationships among model constructs. All the hypotheses developed in the study were positively confirmed, reinforcing the theory and previous research on this field. The study also reveals interesting implications in service quality, satisfaction, trust, and store loyalty, useful to both academics and practitioners. Managers will find this research helpful in better understanding these variables and their roles on their companies’ performance.

  8. Effects of dietary clinoptilolite and calcium levels on the performance and egg quality of commercial layers

    Directory of Open Access Journals (Sweden)

    DA Berto

    2013-09-01

    Full Text Available Among the different feed additives studied in poultry production, clinoptilolite, an aluminosilicate capable of adsorbing harmful substances and of improving live performance and egg and meat quality, was evaluated. The objective of the present study was to evaluate the influence of dietary clinoptilolite and calcium levels on the performance and egg quality of layers. In total, 576 layers were distributed according to a completely randomized experimental design in a 3 x 4 factorial arrangement (three calcium levels - 2.5, 3.1, or 3.7% and four clinoptilolite levels - 0.0, 0.15, 0.25, or 0.50%, with 12 treatments of six replicates of eight birds each. The experiment included four 28-d cycles. The experimental diets were based on corn and soybean meal. Results were submitted to analysis of variance and means were compared by the test of Tukey at 5% significance level using SISVAR statistical package. There was a significant interaction between the evaluated factors for egg production and feed conversion ratio per dozen eggs and egg mass. The lowest calcium level resulted in worse performance and eggshell quality. Clinoptilolite levels affected albumen and yolk content. It was concluded that up to 0.50% inclusion of clinoptilolite in layer diets does not benefit layer performance or eggshell quality. Although the inclusion of only 2.5% calcium in layer diets is not recommended, it is possible to add 3.1% because it promoted similar results as the recommended level of 3.7%.

  9. Effects of lighting pattern and photoperiod on egg production and egg quality of a native chicken under free-range condition.

    Science.gov (United States)

    Geng, A L; Zhang, Y; Zhang, J; Wang, H H; Chu, Q; Liu, H G

    2018-04-14

    The paper aimed to study the effects of lighting pattern and photoperiod alone and in combination on egg production, egg quality in Beijing You Chicken (BYC). A total of 630 19-wk-old BYC laying hens were randomly allocated to 6 groups with 105 birds each, 3 replicates per group, reared in individually lit floor pens with separate outdoor areas. A 2 × 3 factorial experiment (2 lighting patterns: continuous and intermittent lighting; 3 photoperiods: 16, 14, 12 h) was arranged, including 16L:8D (6:00 to 22:00) for group 1; 12L:2D:4L:6D (6:00 to 18:00, 20:00 to 24:00) for group 2; 14L:10D (6:00 to 20:00) for group 3; 10L:2D:4L:8D (6:00 to 16:00, 18:00 to 22:00) for group 4; 12L:12D (6:00 to 18:00) for group 5, and 8L:4D:4L:8D (6:00 to 14:00, 18:00 to 22:00) for group 6, respectively. Egg production parameters were calculated for 22 to 43, 44 to 57, and 22 to 57 wk, and egg quality parameters were measured at the end of 37 and 57 wk. The results showed that the egg production of BYC was not significantly affected by lighting pattern, photoperiod alone, or in combination during 22 to 43 and 22 to 57 wk (P > 0.05), but average feed intake in 12 h groups was significantly higher than those in 14 and 16 h groups during 22 to 43 and 22 to 57 wk (P Egg mass and feed egg ratio were significantly affected by lighting pattern, photoperiod alone, and in combination during 44 to 57 wk (P Egg mass was significantly higher (P = 0.05) and feed egg ratio was significantly lower (P = 0.03) in continuous groups than in intermittent groups. There were significant effects for eggshell thickness, albumen height, haugh unit, and egg grade by lighting pattern alone (P egg production was not significantly affected by lighting pattern alone during 22 to 57 wk (P > 0.05), but the photoperiod significantly affected average feed intake (P egg production during 44 to 57 wk, and intermittent lighting is better for egg quality of the native bird at 37 wk; 3) 12 h lighting is enough for meeting

  10. Comparison of Aviary, Barn and Conventional Cage Raising of Chickens on Laying Performance and Egg Quality

    Directory of Open Access Journals (Sweden)

    M. Ahammed

    2014-08-01

    Full Text Available This study intended to compare the productive performance of three different layer raising systems; conventional cage (CC, barn (BR and aviary (AV. The AV is welfare bestowed housing that allows free locomotion for birds within the BR. The BR allows bird’s free locomotion inside BR but without multilevel structures. Both pullets and cockerels were housed together in both AV and BR, but only pullets in CC. Seventeen weeks old Lohmann Brown Lite (n = 800 pullets were housed in AV during this study. The same age layer pullets were simultaneously assigned to either at CC or BR to compare egg production performance with AV. The duration of experiment was 40 weeks (from 21st to 60th week. There were no remarkable differences in egg production, hen day egg production (HDEP and average egg weight among three rearing systems. First 20 weeks (phase-1 average HDEP (% of AV, CC, and BR were 85.9, 88.8, 87.1 and average egg weights (g were 57.5, 59.9, and 56.9 respectively. Those of the remaining 20 weeks (phase-2 were 87.1, 87.9, 85.5 and 64.2, 63.0 62.1, respectively. Daily feed intakes (122 g, 110 g, 125 g; feed conversion ratio (2.4, 2.1, 2.5 and daily egg mass (53.9 g, 54.4 g, 52.8 g data from AV, CC, and BR were not influenced significantly by the respective raising systems. Daily feed intake of layers in both AV (124 g and BR (127 g tended to be higher than that in CC (113 g during phase-2. Overall, exterior egg quality (dirty and cracked eggs in both phases was superior in BR compared with AV and CC, whereas CC generated intermediate results. This study indicated that the HDEP per se in AV and BR were not significantly different from that in CC. The study implied that the facility depreciation cost for AV and cost for increased feed intake in AV compared to CC are believed to be critical to evaluate the cost effectiveness of egg production in AV.

  11. Efficacy of antimicrobial pullulan-based coating to improve internal quality and shelf-life of chicken eggs during storage.

    Science.gov (United States)

    Morsy, Mohamed K; Sharoba, Ashraf M; Khalaf, Hassan H; El-Tanahy, Hassan H; Cutter, Catherine N

    2015-05-01

    There has been a growing interest in the use of natural materials as a delivery mechanism for antimicrobials and coatings in foods. The aim of the present study was to evaluate the effectiveness of pullulan coatings to improve internal quality and shelf-life of fresh eggs during 10 wk of storage at 25 and 4 °C. Three treatments of eggs were evaluated as follows; non-coated (control; C), coated with pullulan (P), and coated with pullulan containing nisin (N). The effects of the pullulan coatings on microbiological qualities, physical properties, and freshness parameters were investigated and compared with non-coated eggs. For non-coated eggs, as storage time increased, yolk index, albumen index, and Haugh unit value decreased and weight loss increased. However, pullulan coatings (P or N) minimized weight loss (eggs (with a final B grade) 3 wk longer than non-coated eggs at 25 °C. At 4 °C, both P- and N-coated eggs went from AA to A grade after 9 wk and maintained the grade for 10 wk (4 wk longer than that of non-coated eggs). This study is the first to demonstrate that pullulan coatings can preserve the internal quality, prolong the shelf-life, and minimize weight loss of fresh eggs. © 2015 Institute of Food Technologists®

  12. Influence of Zeolite on fatty acid composition and egg quality in Tunisian Laying Hens

    Directory of Open Access Journals (Sweden)

    Fendri Imen

    2012-06-01

    Full Text Available Abstract Background The health benefits of omega-3 and omega-6 polyunsaturated fatty acids (PUFA are generally recognized. Unfortunately, in most Mediterranean countries, the recommended daily intake of these compounds is rarely met. Therefore, enrichment of commonly occurring foods can boost intake of these fatty acids. In this regard, eggs are an interesting target, as they form an integral part of the diet. Result Zeolite (Clinoptilolites was added to Laying Hens feed at concentrations 1% or 2% and was evaluated for its effects on performance of the production and on egg quality. The Laying Hens were given access to 110 g of feed mixtures daily that was either a basal diet or a ‘zeolite diet’ (the basal diet supplemented with clinoptilolite at a level of 1% or 2%. It was found that zeolite treatment had a positive and significatif (p  Conclusion This study showed the significance of using zeolite, as a feed additive for Laying Hens, as part of a comprehensive program to control egg quality and to increase level of polyunsaturated fatty acids on egg.

  13. Egg quality and yolk lipid composition of laying hens fed diets containing cashew nut meal

    Directory of Open Access Journals (Sweden)

    Tatiana Fontoura Vidal

    2013-03-01

    Full Text Available The objective of this study was to assess the effect of the addition of cashew nuts meal (0, 5, 10, 15, 20, and 25% to laying hen diets on egg quality and yolk composition. The variables studied were: egg weight, specific gravity, Haugh Units, percentages of shell, albumen, and yolk, moisture, total solids, total lipids, fatty acids profile, and yolk cholesterol. The addition of up to 25% of cashew nuts meal to hen diets did not affect egg quality and freshness, moisture and total solids content. However, an increase in total lipid content and a decrease in yolk pigmentation was observed. Oleic acid level increased in the yolk, whereas palmitic, stearic, and linoleic acid levels decreased. The addition of cashew nuts meal increased the monounsaturated/saturated fatty acid ratio in the yolk and reduced the cholesterol content. Therefore, the use of cashew nuts meal in laying hen diets favorably modifies the fatty acid composition of egg yolk and contributes to a better acceptance of this food by consumers since it also reduces yolk cholesterol levels.

  14. Monitoring storage time and quality attribute of egg based on electronic nose

    International Nuclear Information System (INIS)

    Wang Yongwei; Jun Wang; Bo Zhou; Qiujun Lu

    2009-01-01

    The objective of this study was to investigate the potential of an electronic nose (E-nose) technique for monitoring egg storage time and quality attributes. An electronic nose was used to distinguish eggs under cool and room-temperature storage by means of principal component analysis (PCA), linear discriminant analysis (LDA), BP neural network (BPNN) and the combination of a genetic algorithm and BP neural network (GANN). Results showed that the E-nose could distinguish eggs of different storage time under cool and room-temperature storage by LDA, PCA, BPNN and GANN; better prediction values were obtained by GANN than by BPNN. Relationships were established between the E-nose signal and egg quality indices (Haugh unit and yolk factor) by quadratic polynomial step regression (QPSR). The prediction models for Haugh unit and yolk factor indicated a good prediction performance. The Haugh unit model had a standard error of prediction of 3.74 and correlation coefficient 0.91; the yolk factor model had a 0.02 SEP and 0.93 correlation coefficient between predicted and measured values respectively.

  15. Utilization of laserpuncture induction as spawning stimulation in catfish (Clarias spp. crossbreeding toward egg quality

    Directory of Open Access Journals (Sweden)

    Pungky S.W. Kusuma

    2015-12-01

    Full Text Available The induction of laserpuncture on the reproductive acupoint of catfish can accelerate gonadotropin hormone formation from the pituitary especially gonadotropin II (GTH-II which has a role in the final stage of oocyte maturation, ovulation and spawning stimulation. The purpose of this study is to evaluate the effects of laserpuncture induction toward the egg quality from crossbreeding catfish male var. Paiton and female var. Sangkuriang. The egg quality was measured by the following parameters: fertilization rate (FR, egg hatching rate (HR, and larvae survival rate (SR. The research treatments were conducted using two levels along with eight repetitions. The results show that the crossbreed catfish using laserpuncture induction affected the parameters by increasing the mean value of fertilization rate, egg hatching rate and larvae survival rate significantly (P < 0.05 compared with mean value of fish without induction. This study concluded that laserpuncture induction on the crossbreeding between broodstock of male catfish var. Paiton and female var. Sangkuriang will increase FR, HR and SR.

  16. The effect of quantity of added eggs on whole meal pasta quality

    Directory of Open Access Journals (Sweden)

    Filipović Jelena S.

    2014-01-01

    Full Text Available This paper investigates the convenience of different chemical and rheological methods for determining the quality of two spelt cultivars for pasta making and the influence of egg quantity on whole meal pasta quality. Post-hoc Tukey’s HSD test at 95% confidence limit has been calculated to show significant differences between different samples. Score analysis is being useful tool for accessing the effect of eggs to spelt pasta quality, and this analysis proved that though lower scores (0.270 for rheological characteristics experienced with cultivar Eco, the addition of eggs is positively contributing to the spelt pasta quality yielding the best score for pasta (0.75, contrary to the cultivar Austria attributed with superior rheology scores. Whole meal spelt is characterised by lower Ca, but higher Fe and Mn content in comparison to bread wheat. In comparison with common pasta, spelt is a suitable raw material for a new product with improved functional properties at the market.[Projekat Ministarstva nauke Republike Srbije, br. TRI 46005 i br. TR 31055

  17. Sensory quality of mayonnaise formulated with eggs produced by laying hens fed diet enriched with purslane meal (Portulaca oleracea)

    Science.gov (United States)

    Kartikasari, L. R.; Hertanto, B. S.; Nuhriawangsa, A. M. P.

    2018-01-01

    The objective of the study was to assess the sensory quality of mayonnaise formulated by egg yolks produced by hens fed purslane meal as a source of omega-3 (n-3) fats, alpha-linolenic acid. Eggs used were produced by Hy-Line Brown hens (38 weeks old) fed five diets suplemented with 0, 2, 4, 6 and 8% purslane meal. A total of 40 eggs of day 29 (n = 8 eggs for each treatment) were collected to formulate mayonnaise. The ingredient composition of mayonnaise was 14% egg yolks, 9% vinegar, 74% corn oil, 1% salt, 1% sugar, and 1% mustard. The parameters included colour, emulsion stability, texture, homogeneity, aroma, taste and flavour of mayonnaise. The findings of sensory evaluation by quantitative descriptive analysis showed that the use of egg yolk from hens fed dietary purslane meal up to 8% resulted in a significant effect on the yellow color of mayonnaise, but did not significantly affect emulsion stability, texture, homogeneity, aroma, taste, and flavour. Based on consumer preference, consumers did not detect any differences in the sensory characteristics between mayonnaise prepared from control eggs and those formulated with eggs produced from dietary treatment. Apparently, there was an increase in colour liking by inclusion of purslane meal. In conclusion, eggs from laying hens fed diets supplemented with purslane meal improved the colour intensity of mayonnaise. Mayonnaise formulation using eggs from diets added with Portulaca oleraceae meal up to a level of 8% can be applied without influencing mayonnaise sensory characteristics and consumer acceptance.

  18. Influence of grinding size of the main cereal of the diet on egg production and eggs quality of brown egg laying hens from 33 to 65 weeks of age.

    Science.gov (United States)

    Herrera, J; Saldaña, B; Cámara, L; Berrocoso, J D; Mateos, G G

    2018-04-17

    The influence of grinding size of the main cereal of the diet on production and egg quality traits was studied in brown hens from 33 to 65 wk of age. The experiment was completely randomized with 6 treatments arranged as a 3 × 2 factorial with 3 main cereals (barley, corn, and wheat) and 2 grinding size of the cereal (6 and 10 mm screen). Each treatment was replicated 11 times (10 hens/replicate). Diets were isonutritive and contained 2,740 kcal/kg AMEn and 16.8% CP. Egg production, ADFI, egg weight, and feed conversion ratio (FCR) were determined by period (4 wk) and for the entire experiment. Egg quality traits (percentage of undergrades, Haugh units, thickness, strength, color of the shell, and proportion of albumen, yolk, and shell) were measured also by period. No interactions between main cereal and grinding size of the main cereal of the diet were observed for any of the traits studied. Feed intake, egg production, and BW gain were not affected by diet or grinding size. Eggs were heavier (P < 0.01) in hens fed barley than in hens fed corn or wheat, probably because of the higher fat content of the barley diets. Also, FCR tended to improve in hens fed barley compared with hens fed corn or wheat (P = 0.07). Diet did not affect any of the egg quality traits studied. In summary, barley and wheat conveniently supplemented with enzymes, can be used in substitution of corn at levels of up to 55% in diets for laying hens, without any adverse effect on egg production or egg quality traits. Moreover, the substitution of corn by a combination of barley and supplemental fat increased egg size. Consequently, the inclusion of one or other cereal in the diet will depend primarily on their relative cost. Within the range studied, screen size (6 vs. 10 mm) of the cereal had limited effects on hen production.

  19. Rationale for Quality Assurance in Fecal Egg Monitoring of Soil-Transmitted Helminthiasis

    Science.gov (United States)

    Hoekendijk, David J. L.; Hill, Philip C.; Sowerby, Stephen J.

    2016-01-01

    Substantial investment has been made into the once “neglected” tropical disease, soil-transmitted helminthiasis, and into control programs that operate within a framework of mapping baseline disease distribution, measuring the effectiveness of applied interventions, establishing when to cease drug administration, and for posttreatment evaluations. However, critical to each of these stages is the determination of helminth infection. The limitations of traditional microscope-based fecal egg diagnostics have not provided quality assurance in the monitoring of parasite disease and suboptimal treatment regimes provide for the potential development of parasite resistance to anthelmintic drugs. Improved diagnostic and surveillance tools are required to protect therapeutic effectiveness and to maintain funder confidence. Such tools may be on the horizon with emergent technologies that offer potential for enhanced visualization and quality-assured quantitation of helminth eggs. PMID:27352875

  20. Rationale for Quality Assurance in Fecal Egg Monitoring of Soil-Transmitted Helminthiasis.

    Science.gov (United States)

    Hoekendijk, David J L; Hill, Philip C; Sowerby, Stephen J

    2016-09-07

    Substantial investment has been made into the once "neglected" tropical disease, soil-transmitted helminthiasis, and into control programs that operate within a framework of mapping baseline disease distribution, measuring the effectiveness of applied interventions, establishing when to cease drug administration, and for posttreatment evaluations. However, critical to each of these stages is the determination of helminth infection. The limitations of traditional microscope-based fecal egg diagnostics have not provided quality assurance in the monitoring of parasite disease and suboptimal treatment regimes provide for the potential development of parasite resistance to anthelmintic drugs. Improved diagnostic and surveillance tools are required to protect therapeutic effectiveness and to maintain funder confidence. Such tools may be on the horizon with emergent technologies that offer potential for enhanced visualization and quality-assured quantitation of helminth eggs. © The American Society of Tropical Medicine and Hygiene.

  1. Pasta quality as impacted by the type of flour and starch and the level of egg addition.

    Science.gov (United States)

    Saleh, Mohammed; Al-Ismail, Khalid; Ajo, Radwan

    2017-10-01

    This study investigated the effects of substituting wheat flour with fractions of different starch types and egg levels on pasta quality. First order mixture response surface model was used where the effects of various starch types and egg levels on pasta quality were evaluated. Coefficients of estimation were determined and fractional contribution of wheat, starch type and egg levels were evaluated. Egg levels negatively (p egg level from 33 to 0%. Flow behavior index of treatments solution with various fractions of starch types and egg level ranged from 0.34 to 1.42 and was significantly (p cooked pasta quality including firmness, stickiness, cooking loss, and water uptake, keeping with consumer acceptability through varying starch type and egg level. Results show that flour and starch type and egg level interaction play significant role in pasta blends formulation. Moreover, substitution of wheat flour with acorn, native or modified corn and potato starches fractions, as well as with lupine, rice, tapioca, and stabilized rice bran flours would have significant effects on the physical properties and acceptability of various cereal products. For instance, the use of rice bran in potentially developed products would enhance the consumption of whole grain foods, resulting in improved intake of fiber and other healthy components. © 2016 Wiley Periodicals, Inc.

  2. Effects of Deinococcus spp. supplement on egg quality traits in laying hens.

    Science.gov (United States)

    Li, I-Chen; Wu, Szu-Yin; Liou, Jenn-Fa; Liu, Hsiao-Hui; Chen, Jiau-Hua; Chen, Chin-Chu

    2018-01-01

    To counter the ill effects of synthetic dyes, bacterial pigment production as an alternative is now one of the promising and emerging fields of research. This study was conducted to evaluate the applicability of Deinococcus genus on the egg quality traits in laying hens. In study I, 24 single comb White Leghorn layers were fed with various 1 wt % Deinococcus bacterial strains for 10 d. In study II, 84 brown Hendrix layers were fed with one of 4 diets containing 0, 0.2, 1, or 5 wt % Deinococcus sp. GKB-Aid 1995 powder for 12 wk. In study III, 60 White Leghorn laying hens were fed either with or without 1 wt % Deinococcus sp. GKB-Aid 1995 powder, 1 wt % Deinococcus sp. GKB-Aid 1995 granules, or 1 wt % Deinococcus sp. GKB-Aid 1995 oily granules for 10 successive d. In all of the experiments, feeding Deinococcus powder did not affect egg quality traits except for the yolk color. In particular, supplementation with all Deinococcus powder treatments changed the yolk color (P 1995. Moreover, longer supplementation of Deinococcus sp. GKB-Aid 1995 in study II had a significant effect on feed conversion ratio. With these findings under consideration, the present study suggests that the Deinococcus species, especially Deinococcus sp. GKB-Aid 1995, can be an excellent candidate for improving egg yolk color in laying hens. © 2017 Poultry Science Association Inc.

  3. Current status of postnatal depression smartphone applications available on application stores: an information quality analysis.

    Science.gov (United States)

    Zhang, Melvyn Wb; Ho, Roger Cm; Loh, Alvona; Wing, Tracey; Wynne, Olivia; Chan, Sally Wai Chi; Car, Josip; Fung, Daniel Shuen Sheng

    2017-11-14

    It is the aim of the current research to identify some common functionalities of postnatal application, and to determine the quality of the information content of postnatal depression application using validated scales that have been applied for applications in other specialties. To determine the information quality of the postnatal depression smartphone applications, the two most widely used smartphone application stores, namely Apple iTunes as well as Google Android Play store, were searched between 20May and 31 May. No participants were involved. The inclusion criteria for the application were that it must have been searchable using the keywords 'postnatal', 'pregnancy', 'perinatal', 'postpartum' and 'depression', and must be in English language. The Silberg Scale was used in the assessment of the information quality of the smartphone applications. The information quality score was the primary outcome measure. Our current results highlighted that while there is currently a myriad of applications, only 14 applications are specifically focused on postnatal depression. In addition, the majority of the currently available applications on the store have only disclosed their last date of modification as well as ownership. There remain very limited disclosures about the information of the authors, as well as the references for the information included in the application itself. The average score for the Silberg Scale for the postnatal applications we have analysed is 3.0. There remains a need for healthcare professionals and developers to jointly conceptualise new applications with better information quality and evidence base. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  4. Effect of gamma irradiation on hygienic quality and chemical characteristics of dehydrated ostrich eggs

    International Nuclear Information System (INIS)

    Shahin, A.A.M.; Swailam, H.M.; Zeid, A.A.A.

    2006-01-01

    Role of gamma irradiation on improving hygienic quality of dehydrated Ostrich eggs during cold storage was studied. Irradiation with dose level 6 kGy proved to be quite tool to keep quality of ostrich egg components since it decreased their bacterial counts less than 100 cells/g either after irradiation process or during cold storage for 6 months. Total coliform, E. coli and Staphylococcus sp. were almost eliminated. Twenty one fungi species belonging to eight genera were isolated from the un-treated samples. Most species could not stand cold storage and only five species (Aternaria clamydospora, Aspergillus niger, Asp. oryzae, Cladosporium cladosporioides & Fusarium oxysporum) were detected after 6 months of storage at 5 degree C. Also, five species could endure irradiation with dose level 6 kGy (Al. alternata, Al. clamydospora, Cl. cladosporioides, herbarum & F. oxysporum) and only two species of them could bear cold storage for 6 months (Al. clamydosp ora & Cl. clodosporioides). The effect of cold storage (5 degree C) on total amino acids either essential or non essential was relatively higher than that occurred by irradiating dried albumen ostrich eggs with 6 kGy. Total amino acids decreased from 272.5 mg/g to 241 mg/g after 6 months of cold storage, while they decreased to 256.2 mg/g after the irradiation process. The same trend was observed in case of dried whole yolk or defatted yolk. The effect of gamma rays and cold storage on the relative percentages of fatty acids composition of dried ostrich eggs yolk was different from each other. After exposing the dried yolk to 6 kGy, the percentages of myristic and palmitic acids increased, while palmitoleic and stearic acids decreased. Mean-while after 6 months of cold storage the percentages of palmitoleic and linoleic acids increased, while stearic and oleic acids decreased

  5. Seasonal changes of DNA fragmentation and quality of raw and cold-stored stallion spermatozoa.

    Science.gov (United States)

    Wach-Gygax, L; Burger, D; Malama, E; Bollwein, H; Fleisch, A; Jeannerat, E; Thomas, S; Schuler, G; Janett, F

    2017-09-01

    In this study annual fluctuations of DNA fragmentation and quality of cold-stored equine sperm were evaluated. Ejaculates were collected weekly during one year from 15 stallions. Ejaculate volume, sperm concentration and total sperm count were determined and semen was then extended and cold-stored for 48 h. Sperm motility was evaluated by CASA before and after 24 as well as 48 h of cold storage. In addition, the percentages of sperm with intact plasma membrane and acrosome (PMAI %) and with low intracellular Ca 2+ level were determined in cold-stored semen (24 h, 48 h). SCSA™ was performed to assess mean DFI, SD of DFI and % DFI in raw frozen-thawed as well as in extended sperm after 24 and 48 h of storage. The month of semen collection affected (P sperm concentration lower in summer compared to winter and motility lower in July than in any other month of the year (P sperm with low intracellular Ca +2 level (%) after storage for 24 and 48 h, higher values were measured in winter and in October compared to April, June and July (P sperm. Semen quality was impaired in midsummer when low sperm motility and viability were combined with an elevated DNA fragmentation and Ca 2+ level of sperm. Copyright © 2017. Published by Elsevier Inc.

  6. Irradiation of shell egg on the physicochemical and functional properties of liquid egg white.

    Science.gov (United States)

    Min, B; Nam, K C; Jo, C; Ahn, D U

    2012-10-01

    This study was aimed at determining the effect of irradiation of shell eggs on the physiochemical and functional properties of liquid egg white during storage. Color and textural parameters of irradiated liquid egg white after cooking were also determined. Shell eggs were irradiated at 0, 2.5, 5, or 10 kGy using a linear accelerator. Egg white was separated from yolk and stored in at 4°C up to 14 d. Viscosity, pH, turbidity, foaming properties, color, and volatile profile of liquid egg white, and color and texture properties of cooked egg white were determined at 0, 7, and 14 d of storage. Irradiation increased the turbidity but decreased viscosity of liquid egg white. Foaming capacity and foam stability were not affected by irradiation at lower dose (2.5 kGy), but were deteriorated at higher doses (≥5.0 kGy) of irradiation. Sulfur-containing volatiles were generated by irradiation and their amounts increased as the irradiation dose increased. However, the sulfur volatiles disappeared during storage under aerobic conditions. Lightness (L* value) and yellowness (b* value) decreased, but greenness (-a* value) increased in cooked egg white in irradiation dose-dependent manners. All textural parameters (hardness, adhesiveness, cohesiveness, chewiness, and resilience) of cooked egg white increased as the irradiation dose increased, but those changes were marginal. Our results indicated that irradiation of shell egg at lower doses (up to 2.5 kGy) had little negative impact on the physiochemical and functional properties of liquid egg white, but can improve the efficiency of egg processing due to its viscosity-lowering effect. Therefore, irradiation of shell eggs at the lower doses has high potential to be used by the egg processing industry to improve the safety of liquid egg without compromising its quality.

  7. Exterior and interior physical quality of egg of laying hens fed diets containing different dietary purslane levels

    Science.gov (United States)

    Kartikasari, L. R.; Hertanto, B. S.; Pranoto, D.; Salim, W. N.; Nuhriawangsa, A. M. P.

    2017-04-01

    Purslane is considered a rich vegetable source of alpha-linolenic acid, beta-carotene and various antioxidants. The objective of the study was to investigate the effect of different dietary levels of purslane meal (Portulaca oleracea) in the diets of laying hens on physical quality of eggs. A total of 125 Hy-Line Brown hens (54 weeks old) were placed at individual cages and assigned to five dietary treatments. The diets were supplemented with 0, 2, 4, 6 and 8% purslane meal. Laying hens were fed for 5 weeks after a typical period of adaptation (7 days). Water and feed were provided ad libitum. A total of 25 egg samples of day 28 and day 35 (n = 5 egg yolks for each treatment) were collected to analyse exterior and interior physical quality of eggs. The data were analysed using ANOVA. Differences between treatment means were further analysed using Duncan’s New Multiple Range Test. Results showed that feeding different purslane meal levels in the diets improved egg weight, yolk weight, albumen weight and yolk colour. The highest intensity of yolk colour was obtained with the diet containing 8% purslane meal. However, dietary treatments did not affect egg index, albumen index, yolk index, shell weight, shell thickness and Haugh Unit. It is concluded that including purslane meal to laying hen diets increases the physical qualities of the eggs.

  8. Variations in fresh fruit and vegetable quality by store type, urban-rural setting and neighbourhood deprivation in Scotland.

    Science.gov (United States)

    Cummins, Steven; Smith, Dianna M; Taylor, Mathew; Dawson, John; Marshall, David; Sparks, Leigh; Anderson, Annie S

    2009-11-01

    Neighbourhood differences in access to fresh fruit and vegetables may explain social inequalities in diet. Investigations have focused on variations in cost and availability as barriers to the purchase and consumption of fresh produce; investigations of quality have been neglected. Here we investigate whether produce quality systematically varies by food store type, rural-urban location and neighbourhood deprivation in a selection of communities across Scotland. Cross-sectional survey of twelve fresh fruit and vegetable items in 288 food stores in ten communities across Scotland. Communities were selected to reflect a range of urban-rural settings and a food retail census was conducted in each location. The quality of twelve fruit and vegetable items within each food store was evaluated. Data from the Scottish Executive were used to characterise each small area by deprivation and urban-rural classification. Scotland. Quality of fruit and vegetables within the surveyed stores was high. Medium-sized stores, stores in small town and rural areas, and stores in more affluent areas tended to have the highest-quality fresh fruit and vegetables. Stores where food is secondary, stores in urban settings and stores in more deprived areas tended have the lowest-quality fresh produce. Although differences in quality were not always statistically significant, patterns were consistent for the majority of fruit and vegetable items. The study provides evidence that variations in food quality may plausibly be a micro-environmental mediating variable in food purchase and consumption and help partially explain neighbourhood differences in food consumption patterns.

  9. Effect of diatomaceous earth on parasite load, egg production, and egg quality of free-range organic laying hens.

    Science.gov (United States)

    Bennett, D C; Yee, A; Rhee, Y-J; Cheng, K M

    2011-07-01

    The effectiveness of diatomaceous earth (DE) as a treatment against parasites and to increase feed efficiency and egg production of organically raised free-range layer hens was evaluated in 2 breeds of commercial egg layers [Bovan Brown (BB) and Lowmann Brown (LB)] that differ in their resistance to internal parasitic infections. Half the hens of each breed were fed diets supplemented with DE (2%). Their internal parasite loads were assessed by biweekly fecal egg counts (FEC) and by postmortem examination of the gastrointestinal tract. Supplementing DE in diets of LB hens, the more parasite-resistant breed, did not significantly affect their FEC and adult parasite load. However, BB hens treated with dietary DE had significantly lower Capillaria FEC, slightly lower Eimeria FEC, fewer birds infected with Heterakis, and significantly lower Heterakis worm burden than control BB hens. Both BB and LB hens fed the diet containing DE were significantly heavier, laid more eggs, and consumed more feed than hens fed the control diet, but feed efficiency did not differ between the 2 dietary treatments. Additionally, BB hens consuming the DE diet laid larger eggs containing more albumen and yolk than hens consuming the control diet. In a subsequent experiment, the effectiveness of DE to treat a Northern fowl mite (Ornithonyssus sylviarum) infestation was tested. Relative to controls, both breeds of hens that were dusted with DE had reduced number of mites. The results of this study indicate the DE has the potential to be an effective treatment to help control parasites and improve production of organically raised, free-range layer hens.

  10. Effects of Ascorbic Acid Injection in Incubated Eggs Submitted to Heat Stress on Incubation Parameters and Chick Quality

    Directory of Open Access Journals (Sweden)

    S Sgavioli

    2015-06-01

    Full Text Available Dose-dependent positive effects on hatchability and hatchling weight have been attributed to ascorbic acid (AA when eggs were submitted or not to intermittent heat stress during incubation. Fertile breeder (Cobb(r eggs were used to determine if the pre-incubation injection of AA in ovo affects the incubation and hatchling quality of egg incubated under thermoneutral or intermittent heat stress conditions. Eggs were not injected or injected with 0, 2,4, or 6% AA/100µL water and incubated at continuous thermoneutral (37.5ºC or hot (39.0ºC temperature. Eggshell temperature (EST increased in the second half of the incubation period in all experimental groups. The EST of non-injected eggs and of those injected with water was higher when incubated at 39°C than at 37.5°C, but EST was not different among eggs injected with AA. Egg mass loss and eggshell conductance were higher in the eggs incubated at 39°C than at 37.5°C.Hatchability was lower in the eggs injected with AA. Liver and yolk sac weights were higher, whereas heart and liver weights were lower in hatchlings from eggs incubated at 39°C; however, hatchling weight was not affected by incubation temperature. The results showed that AA doses affected egg conductive heat loss and hatchability, and that they did not minimize the effects of high incubation temperature on liver and heart development.

  11. Rearing conditions determine offspring survival independent of egg quality : A cross-foster experiment with Oystercatchers Haematopus ostralegus

    NARCIS (Netherlands)

    van de Pol, Martijn; Bakker, T; Saaltink, DJ; Verhulst, S; Saaltink, Dirk-Jan

    Variation in rearing conditions, due either to parental or to environmental quality, can result in offspring of different quality (e.g. body condition, immune function). However, evidence is accumulating that egg size and composition can also affect offspring quality. In Oystercatchers Haematopus

  12. Effect of dietary vanadium and vitamin C on egg quality and antioxidant status in laying hens.

    Science.gov (United States)

    Wang, J P; He, K R; Ding, X M; Luo, Y H; Bai, S P; Zeng, Q F; Su, Z W; Xuan, Y; Zhang, K Y

    2016-06-01

    This study assessed the effect of dietary vanadium (V) and vitamin C (VC) on production performance, egg quality and antioxidant status in laying hens. A total of 360 laying hens (31-week-old) were randomly allotted into a 3 × 3 factorial arrangement treatments (four replicates and 10 chicks per replicate) with three levels of dietary V (0, 5 and 10 mg/kg) and three levels of vitamin C (0, 50 and 100 mg/kg) for 12 weeks. The effect of V and VC did not alter egg production, egg weight, average daily feed intake and feed conversion ratio during 1-12 week. Albumen height and Haugh unit value were linearly decreased (p effect of 100 mg/kg VC was observed to counteract (p effect in V-containing treatments during 1-12 week. Hens fed V-containing diet laid lighter (linear effect, p effect of V during 4, 8 and 12 week. The effect of VC alone and the interactive effect between VC and V were shown to increase serum (p effect and can mitigate the oxidative stress to some extent. Journal of Animal Physiology and Animal Nutrition © 2015 Blackwell Verlag GmbH.

  13. Feeding Diets Containing Different Forms of Duckweed on Productive Performance and Egg Quality of Ducks

    Directory of Open Access Journals (Sweden)

    B. Indarsih

    2012-08-01

    Full Text Available The present experiment was undertaken to study the feeding effect of diets containing different forms of duckweed for local ducks on their productive performance and egg quality or egg yolk pigmentation. A total of 90 birds of 24 wk old ducks were randomly divided into 18 experimental units of 2.0 x 1.0 m2 of cages. The experiment was assigned in a completely randomized design (3 treatments with 6 replicates, 5 birds each. There were 3 dietary treatments, namely P1= ducks fed a complete diet containing 20 % of dried duckweed and given in the form of dry-mash; P2= a complete diet in P1 but it was offered in wet form (slurry; and P3= ducks were offered basal diet in the form of dry-mash and fresh duckweed was offered separately ad libitum. Diets were formulated to have similar nutritional contents. Feed consumption, feed conversion ratio (FCR, and egg yolk pigmentation were measured. The result of the study showed that these three parameters were affected by the feeding different forms of duckweed. Feeding diet with fresh duckweed brought about the best pigmentation than did the dry one. Fresh duckweed offers a promise as a potential feedstuff for ducks and has a good implication in reducing feed processing cost.

  14. Effect of dietary supplementation with Morinda citrifolia on productivity and egg quality of laying hens

    Directory of Open Access Journals (Sweden)

    Dairon Más-Toro

    2015-07-01

    Full Text Available In order to evaluate the dietary supplementation of powdered leaves of Morinda citrifolia on productivity and egg quality of laying hens, a total of 160 White Leghorn birds (Hybrid L-33 of 27 weeks of age were allotted during 70 days, according to completely randomized design. Dietary treatments consisted of a control diet fed without or with 0.5, 1.0 and 1.5% of powdered leaves of M. citrifolia. Supplementation of 1.0 and 1.5% of M. citrifolia powder increased the egg weight (P0.05 among treatments. Also, supplementation of 0.5 and 1.0% of M. citrifolia increased the shell thickness and the yolk color was pigmented by this medicinal plant. It recommended the dietary supplementation of 1.0% of powdered leaves of M. citrifolia on laying hen diets to improve the egg weight, shell thickness and yolk color.

  15. Performance, egg quality, and liver lipid reserves of free-range laying hens naturally infected with Ascaridia galli.

    Science.gov (United States)

    Sharma, N; Hunt, P W; Hine, B C; Sharma, N K; Chung, A; Swick, R A; Ruhnke, I

    2018-03-16

    A study was conducted to determine the performance, egg quality, and liver lipid reserves of laying hens exposed to ranges contaminated with Ascaridia galli. Sixteen-week-old Lohmann Brown laying hens (n = 200) were divided into 4 treatments with 5 replicates containing 10 hens per pen. Hens of treatment 1 [negative control (NC)] ranged on a decontaminated area, and hens of treatments 2 (low infection) and 3 (medium infection) ranged on areas previously contaminated by hens artificially infected with 250 and 1,000 embryonated A. galli eggs, respectively. The hens of treatment 4 [positive control (PC)] ranged on areas previously contaminated by hens artificially infected with 2,500 embryonated A. galli eggs, and in addition these hens were orally inoculated with 1,000 embryonated eggs. Results indicated that hens of the medium infection group had a higher number of intestinal A. galli worms and A. galli eggs in the coprodeum excreta (43.9 ± 4.0 and 3,437 ± 459 eggs/g) compared to hens of the low infection group (23.8 ± 4.0 and 1,820 ± 450 eggs/g) (P  0.05). Egg production, egg mass, feed intake, and feed conversion ratio (FCR) were not affected by A. galli infection (P > 0.05). Egg quality parameters (egg weight, shell reflectivity, shell weight, shell thickness, shell percentage, shell breaking strength, deformation, albumen height, Haugh unit, and yolk score) were not affected by A. galli infection (P > 0.05). Highly infected hens had lower liver lipid content (2.72 ± 0.51 g) compared to uninfected hens (4.46 ± 0.58 g, P ranges contaminated with A. galli resulted in infection of the ranging hens, but this did not affect egg production or egg quality. Infection with A. galli lowered the liver lipid reserves of the host significantly, suggesting infected hens use more energy reserves for maintenance and production.

  16. Effects of food store quality on hibernation performance in common hamsters.

    Directory of Open Access Journals (Sweden)

    Carina Siutz

    Full Text Available Hibernating animals can adjust torpor expression according to available energy reserves. Besides the quantity, the quality of energy reserves could play an important role for overwintering strategies. Common hamsters are food-storing hibernators and show high individual variation in hibernation performance, which might be related to the quality of food hoards in the hibernacula. In this study, we tested the effects of food stores high in fat content, particularly polyunsaturated fatty acids (PUFAs, on hibernation patterns under laboratory conditions. Control animals received standard rodent pellets only, while in the other group pellets were supplemented with sunflower seeds. We recorded body temperature during winter using subcutaneously implanted data loggers, documented total food consumption during winter, and analysed PUFA proportions in white adipose tissue (WAT before and after the winter period. About half of the individuals in both groups hibernated and torpor expression did not differ between these animals. Among the high-fat group, however, individuals with high sunflower seeds intake strongly reduced the time spent in deep torpor. PUFA proportions in WAT decreased during winter in both groups and this decline was positively related to the time an individual spent in deep torpor. Sunflower seeds intake dampened the PUFA decline resulting in higher PUFA levels in animals of the high-fat group after winter. In conclusion, our results showed that common hamsters adjusted torpor expression and food intake in relation to the total energy of food reserves, underlining the importance of food hoard quality on hibernation performance.

  17. Low-fiber alfalfa (Medicago sativa L.) meal in the laying hen diet: effects on productive traits and egg quality.

    Science.gov (United States)

    Laudadio, V; Ceci, E; Lastella, N M B; Introna, M; Tufarelli, V

    2014-07-01

    This study was designed to determine the effects on laying performance and egg quality resulting from partial substitution of soybean meal (SBM) with low-fiber alfalfa (LFA; Medicago sativa L.) meal in the diet of early-phase laying hens. ISA Brown layers, 18 wk of age, were randomly allocated to 2 dietary treatments and fed for 10 wk. The hens were fed 2 wheat middling-based diets: a control diet, which contained SBM (15% of diet), and a test diet containing LFA (15% of diet) as the main protein source. Low-fiber alfalfa meal was obtained by a combination of sieving and air-classification processes. Feed intake was recorded daily, and egg production was calculated on a hen-day basis; eggs from each group were weekly collected to evaluate egg components and quality. The partial substitution of SBM with LFA had no adverse effect on growth performance of early-phase laying hens. Egg production and none of the egg-quality traits examined were influenced by dietary treatment, except for yolk color (P alfalfa meal in the laying-hen diet can positively influence yolk quality without adversely affecting productive traits. © 2014 Poultry Science Association Inc.

  18. Effect of dietary inclusion of sugar syrup on production performance, egg quality and blood biochemical parameters in laying hens

    Directory of Open Access Journals (Sweden)

    Ahmed S. Hussein

    2018-03-01

    Full Text Available The effects of dietary inclusion of sugar syrup on quality of egg, cholesterol level, production performance, serum total protein and blood biochemical parameters were evaluated in laying hens. A total of 300 commercial Lohmann LSL hens (30 weeks of age were randomly distributed into 3 dietary treatments which consisted of a normal corn diet containing corn–soy and 2 diets containing 5% and 10% sugar syrup. Each treatment was replicated 5 times (n = 20. Egg production, feed intake, body weight and egg weight of laying hens fed different diets were recorded. The experiment lasted for 20 weeks. The Haugh unit scores of hens fed diets with sugar syrup were significantly increased (P < 0.05 compared with the control treatment. The sugar syrup had no significant effect on liver enzymes, total protein, blood glucose and creatinine in all treatments. The eggs laid by hens fed sugar syrup diets had lower cholesterol level (P < 0.05 compared with those laid by hens fed the control diet. Electrophoresis analysis showed that comparable electrophoretic patterns were noticed between serum proteins of treatment groups. From the results, it can be concluded that sugar syrup diets and corn diets have similar effects on feed intake, body weight, production of eggs and blood biochemical parameters in layer hens, which suggests sugar syrup can be used as an energy source for replacing part of corn in poultry layer diets. Keywords: Cholesterol, Sugar syrup diet, Egg, Egg quality, Protein

  19. Experience with quality assurance in two store-and-forward telemedicine networks

    OpenAIRE

    Wootton, Richard; Liu, Joanne; Bonnardot, Laurent; Venugopal, Raghu; Oakley, Amanda

    2015-01-01

    Published version. Also available at http://dx.doi.org/10.3389/fpubh.2015.00261 Despite the increasing use of telemedicine around the world, little has been done to incorporate quality assurance (QA) into these operations. The purpose of the present study was to examine the feasibility of QA in store-and-forward teleconsulting using a previously published framework. During a 2-year study period, we examined the feasibility of using QA tools in two mature telemedicine networks [Médecins Sa...

  20. Assessing Consumer Emotional Responses in the Presence and Absence of Critical Quality Attributes: A Case Study with Chicken Eggs.

    Science.gov (United States)

    Wardy, Wisdom; Sae-Eaw, Amporn; Sriwattana, Sujinda; No, Hong Kyoon; Prinyawiwatkul, Witoon

    2015-07-01

    Effects of attribute presence and absence on the emotional profile and consumer acceptability of products with varying qualities were assessed using eggs as an example. An online survey (n = 320) was used to evaluate emotional responses and acceptability to 5 types of egg quality attributes: intrinsic, aesthetic, extrinsic, expediency, and wholesome/safety, for both present and absent conditions. Attribute absence rather than presence evoked greater consumer discriminating emotions associated with eggs. Mean emotion intensity elicited by the presence of all quality attributes ranged from 1.67 (intrinsic; guilty) to 4.05 (wholesome; good) versus 2.01 (wholesome; satisfied) to 3.29 (wholesome; disgusted) when absent. Key positive emotions elicited by presence of attributes were active, calm, good, interested, happy, safe, and satisfied; while dominant negative emotions elicited by absence of attributes included disgusted and worried. Wholesome quality (constituted by egg freshness, "packing/best-before-date" and absence of visible cracks) exhibited the highest liking (7.65) and emotion intensities, while the emotional responses to both the presence and absence of intrinsic quality (constituted by nutrient-fortified egg, organic egg, and USDA-certified farm egg) were similar, reflecting their dynamic effects on emotions. Emotions and acceptability were more correlated for attribute absence than presence; and good, happy, and satisfied emotions were strongly related to egg acceptability (r ≥ 0.6). Egg product/packaging design can be oriented toward emphasizing wholesome and expedient attributes, since they enhance good, safe, and satisfied emotions, while minimizing disgust, worry, and boredom. The use of emotional responses and hedonic testing regarding attribute presence and absence would allow for improved selection of attributes critical to consumer acceptance of products. Assessing effects of attribute presence compared with absence on food-evoked emotions may

  1. Ovary transcriptome profiling via artificial intelligence reveals a transcriptomic fingerprint predicting egg quality in striped bass, Morone saxatilis.

    Directory of Open Access Journals (Sweden)

    Robert W Chapman

    Full Text Available Inherited gene transcripts deposited in oocytes direct early embryonic development in all vertebrates, but transcript profiles indicative of embryo developmental competence have not previously been identified. We employed artificial intelligence to model profiles of maternal ovary gene expression and their relationship to egg quality, evaluated as production of viable mid-blastula stage embryos, in the striped bass (Morone saxatilis, a farmed species with serious egg quality problems. In models developed using artificial neural networks (ANNs and supervised machine learning, collective changes in the expression of a limited suite of genes (233 representing 90% of the eventual variance in embryo survival. Egg quality related to minor changes in gene expression (<0.2-fold, with most individual transcripts making a small contribution (<1% to the overall prediction of egg quality. These findings indicate that the predictive power of the transcriptome as regards egg quality resides not in levels of individual genes, but rather in the collective, coordinated expression of a suite of transcripts constituting a transcriptomic "fingerprint". Correlation analyses of the corresponding candidate genes indicated that dysfunction of the ubiquitin-26S proteasome, COP9 signalosome, and subsequent control of the cell cycle engenders embryonic developmental incompetence. The affected gene networks are centrally involved in regulation of early development in all vertebrates, including humans. By assessing collective levels of the relevant ovarian transcripts via ANNs we were able, for the first time in any vertebrate, to accurately predict the subsequent embryo developmental potential of eggs from individual females. Our results show that the transcriptomic fingerprint evidencing developmental dysfunction is highly predictive of, and therefore likely to regulate, egg quality, a biologically complex trait crucial to reproductive fitness.

  2. Effects of DHA-enriched hen egg yolk and L-cysteine supplementation on quality of cryopreserved boar semen.

    Science.gov (United States)

    Chanapiwat, Panida; Kaeoket, Kampon; Tummaruk, Padet

    2009-09-01

    The objective of the present study was to determine the effects of docosahexaenoic acid (DHA)-enriched hen egg yolks and L-cysteine supplementation on the qualities of the cryopreserved boar semen. A total of 15 ejaculates from 5 Pietrain boars were divided into 4 groups according to the compositions of the freezing extenders used, that is, normal hen egg yolk (group I), DHA-enriched hen egg yolk (group II), normal hen egg yolk with 5 mmol L(-1) of cysteine supplementation (group III) and DHA-enriched hen egg yolk with 5 mmol L(-1) of cysteine supplementation (group IV). The semen was cryopreserved using controlled rate freezer and was thawed at 50 degrees C for 12 s. Progressive motility, sperm viability, acrosome integrity and functional integrity of sperm plasma membrane of the post-thawed semen were evaluated. The supplementation of L-cysteine in the freezing extender alone (group III) improved progressive motility (P semen qualities (P > 0.05). In conclusion, the supplementation of antioxidant L-cysteine alone or in combination with DHA-enriched hen egg yolk significantly improved the post-thawed semen qualities, especially progressive motility and acrosome integrity.

  3. Quality properties, fatty acids, and biogenic amines profile of fresh tilapia stored in ice.

    Science.gov (United States)

    Kulawik, Piotr; Özoğul, Fatih; Glew, Robert H

    2013-07-01

    This work determines quality properties and fatty acids content of Nile tilapia (Oreochromis niloticus) stored in ice for 21 d. The quality properties consist of thiobarbituic acid (TBA), total volatile basic nitrogen (TVB-N), trimethylamine (TMA), and microbiological analysis (total viable count (TVC), total coliform, Salmonella and Staphylococcus aureus) and determination of biogenic amines content (histamine, cadaverine, putrescine, spermine, spermidine, 2-phenylethylamine, agmatine, tyramine, and ammonia). Moreover, the fat, moisture, and ash composition as well as fatty acids profile have also been analyzed. The TBA, TVB-N, and biogenic amines analysis showed rather low levels of spoilage even after 21 d of storage. The microbiological analysis, however, showed that tilapia was unsuitable for consumption after just 10 d. The fat, ash, moisture, and fatty acids profile analysis showed that tilapia is not a good source of n-3 fatty acids. The research indicated that the microbiological analysis was the best method to establish spoilage of tilapia stored in ice, of all analytical methods performed in this study. © 2013 Institute of Food Technologists®

  4. Novel approaches to assess the quality of fertility data stored in dairy herd management software.

    Science.gov (United States)

    Hermans, K; Waegeman, W; Opsomer, G; Van Ranst, B; De Koster, J; Van Eetvelde, M; Hostens, M

    2017-05-01

    Scientific journals and popular press magazines are littered with articles in which the authors use data from dairy herd management software. Almost none of such papers include data cleaning and data quality assessment in their study design despite this being a very critical step during data mining. This paper presents 2 novel data cleaning methods that permit identification of animals with good and bad data quality. The first method is a deterministic or rule-based data cleaning method. Reproduction and mutation or life-changing events such as birth and death were converted to a symbolic (alphabetical letter) representation and split into triplets (3-letter code). The triplets were manually labeled as physiologically correct, suspicious, or impossible. The deterministic data cleaning method was applied to assess the quality of data stored in dairy herd management from 26 farms enrolled in the herd health management program from the Faculty of Veterinary Medicine Ghent University, Belgium. In total, 150,443 triplets were created, 65.4% were labeled as correct, 17.4% as suspicious, and 17.2% as impossible. The second method, a probabilistic method, uses a machine learning algorithm (random forests) to predict the correctness of fertility and mutation events in an early stage of data cleaning. The prediction accuracy of the random forests algorithm was compared with a classical linear statistical method (penalized logistic regression), outperforming the latter substantially, with a superior receiver operating characteristic curve and a higher accuracy (89 vs. 72%). From those results, we conclude that the triplet method can be used to assess the quality of reproduction data stored in dairy herd management software and that a machine learning technique such as random forests is capable of predicting the correctness of fertility data. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

  5. Stored Energy and Quality Factor of Spherical Wave Functions–in Relation to Spherical Antennas With Material Cores

    DEFF Research Database (Denmark)

    Hansen, Troels V.; Kim, Oleksiy S.; Breinbjerg, Olav

    2012-01-01

    wave, the excitation coefficients for the internal and external spherical waves, the radiated power, the internal and external stored electric and magnetic energies, the difference of total electric and total magnetic energy, the cavity and radiating resonance conditions, and the quality factor. We...... investigate the variation of the internal/external and electric/magnetic stored energies with the electrical size of the antenna to study their relative significance for the quality factor....

  6. PHYSIOLOGICAL AND SANITARY QUALITIES OF MAIZE LANDRACE SEEDS STORED UNDER TWO CONDITIONS

    Directory of Open Access Journals (Sweden)

    Raquel Stefanello

    2015-08-01

    Full Text Available The preservation of seed quality during the storage period depends not only on the conditions during production and harvesting but also on the storage and maintenance of appropriate storage product conditions. Thus, the aim of this study was to evaluate the physiological and sanitary qualities of maize landrace seeds stored under two conditions. The maize seed batch varieties Oito carreiras, Cabo roxo and Lombo baio were used. Tests included germination, first count, cold test, accelerated aging and sanity. Based on the results it was concluded that the physiological quality of these seed varieties decreased with the storage period. The major fungi identified in the maize seeds during storage were from the genera Aspergillus, Fusarium and Penicillium, which caused deterioration and reduction of the physiological quality. Storage using a paper bag at a temperature of 10 °C did not prevent the deterioration of maize seeds but was more effective at preserving the quality of the seed compared with a plastic bag at room temperature.

  7. Variability and interaction of some egg physical and eggshell quality attributes during the entire laying hen cycle.

    Science.gov (United States)

    Sirri, F; Zampiga, M; Berardinelli, A; Meluzzi, A

    2018-05-01

    The aim of this study was to investigate the variability and relationships between some egg physical (egg weight, width, length, shape index, and surface area) and eggshell parameters (weight and percentage, thickness, breaking strength, and L*, a*, and b* values) during the entire laying hen cycle. A total of 8,000 eggs was collected every 5 wk, from 30 to 81 wk of hen age (10 samplings of 400 eggs/house), in 2 identical poultry houses equipped with enriched cages. For the statistical analysis, ANOVA, Bivariate Correlation, Principal Component Analysis (PCA), and Hierarchical Cluster Analysis were used. An increase of egg weight, length, and eggshell lightness (L*) associated with a reduction of eggshell percentage, breaking strength, and redness (a*) was observed as the hen aged (P 10% of eggshell breaking strength and a*. According to the PCA, the highest changes during the laying cycle are related to egg physical parameters (32%) and to eggshell breaking strength, percentage, and thickness (26%). The egg physical parameters appeared to be strongly correlated to each other, whereas a slight correlation between eggshell breaking strength and color attributes were evidenced (-0.231 and 0.289, respectively, for L* and a*; P quality attributes throughout the entire laying hen cycle.

  8. Egg Shell and Oyster Shell Powder as Alternatives for Synthetic Phosphate: Effects on the Quality of Cooked Ground Pork Products.

    Science.gov (United States)

    Cho, Min Guk; Bae, Su Min; Jeong, Jong Youn

    2017-01-01

    This study aimed to determine the optimal ratio of natural calcium powders (oyster shell and egg shell calcium) as synthetic phosphate replacers in pork products. Ground pork samples were subjected to six treatments, as follows: control (-) (no phosphate added), control (+) (0.3% phosphate blend added), treatment 1 (0.5% oyster shell calcium powder added), treatment 2 (0.3% oyster shell calcium powder and 0.2% egg shell calcium powder added), treatment 3 (0.2% oyster shell calcium powder and 0.3% egg shell calcium powder added), and treatment 4 (0.5% egg shell calcium powder added). The addition of natural calcium powders resulted in an increase in the pH values of meat products, regardless of whether they were used individually or mixed. The highest cooking loss was observed ( p cooking loss in samples with natural calcium powder added was similar ( p >0.05) to that in the positive control samples. CIE L* values decreased as the amount of added egg shell calcium powder increased. CIE a* values were higher ( p egg shell powder (treatment 2 or 3) was effective for the improvement of textural properties of the pork products. The findings show that the combined use of 0.2% oyster shell calcium and 0.3% egg shell calcium should enable the replacement of synthetic phosphate in the production of cooked pork products with desirable qualities.

  9. The efficacy of using exogenous enzymes cocktail on production, egg quality, egg nutrients and blood metabolites of laying hens fed distiller's dried grains with solubles.

    Science.gov (United States)

    Abd El-Hack, M E; Chaudhry, M T; Mahrose, K M; Noreldin, A; Emam, M; Alagawany, M

    2018-04-01

    An experiment was performed using 120 Hisex Brown laying hens for evaluating the effects of different inclusion levels of corn distiller's dried grains with solubles (DDGS) as a replacement of soybean meal (SBM) with or without enzyme cocktail on performance, egg quality, egg nutrients and blood metabolites in laying hens through 22-42 weeks of age. A 4 × 2 factorial design experiment was performed including four substitution levels of DDGS (0, 250, 500 and 750 g/kg respectively) and two enzyme cocktail levels (0 and 250 mg/kg diet). The used enzyme in this study "Gallazyme" composed of xylanase, Trichoderma longibrachiatum (600 units/g), protease, Bacillus subtilis (8,000 units/g) and amylase and Bacillus amyloliquofaciens (800 units/g). The control diet showed the best feed efficiency followed by the intermediate levels of DDGS. The lowest value of feed efficiency was found in the group fed the highest level of DDGS. Enzyme addition improved feed efficiency and decreased laying rate. Increasing DDGS levels was associated with albumin and shell thickness increases. Dietary DDGS depressed all egg components except the organic matter which maximised in enzyme-treated groups. Increasing DDGS level was accompanied by increase in yolk cholesterol and total lipids. No significant impacts were detected with enzymes supplementation on yolk lipids profile. Excepting serum calcium and phosphorous, all serum constituents increased with increasing level of DDGS. Using enzyme markedly depressed serum ammonia by 15.02% and increased calcium by 6.44% compared with enzyme-free diets. Interaction between DDGS and enzyme was significant on most of studied parameters. It could be concluded that using enzyme cocktail in DDGS-based diets may improve feed efficiency and egg quality, in addition to lowering blood ammonia and increasing blood calcium. It is recommended to substitute SBM by DDGS up to 500 g/kg diet. © 2017 Blackwell Verlag GmbH.

  10. RESEARCH REGARDING SOME PHYSICAL QUALITY VALUES OF JAPANESE QUAIL EGGS OBTAINED AT THE MIDDLE OF THE LAYING STAGE

    Directory of Open Access Journals (Sweden)

    ANCA TEUŞAN

    2009-10-01

    Full Text Available The Japanese quail is one of the smallest bird subspecies which has been tamed by man, being industrially raised in our days in many states over the world. This avian subspecies produces over 300 eggs, and though there are about 6 races and different varieties, there are very little data in the scientific literature regarding the quality values for eggs of Japanese quail hatching eggs collected from hens at the end of the laying – physical values (pH value of the eggs components, albumen index, yolk index The present paper wants to bring a series of data regarding some of these indicators. The pH values was determined with an portable pH-oximeter, and to establish the other two quality indexes we used a device fitted with callipers taking into account: height of the dense egg white (albumen, minimum and maximum diameter of the dense and fluid egg white, height and the diameter of the yolk. The albumen pH recorded values of 8.90, and the yolk pH values of 6.07. The statistical mean for the 130 values of albumen index taken in study was 0.048. The mean value of yolk index was 0.399. The obtained results are normal for the period of quail’s life.

  11. QUALITY OF MINIMALLY PROCESSED YAM (Dioscorea sp. STORED AT TWO DIFFERENT TEMPERATURES

    Directory of Open Access Journals (Sweden)

    ADRIANO DO NASCIMENTO SIMÕES

    2016-01-01

    Full Text Available This work studied the physical, chemical and bio chemical alterations in minimally processed yam stored at two different temperatures, as well a s the incidence of bacteria of the genus Pseudomonas . The experimental design was completely randomised in a 2x8 factorial design, with two storage temperature s (5 and 10°C and eight storage times (0, 2, 4, 6, 8, 1 0, 12 and 14 days. Experiments were in triplicate. Yam was selected, peeled and cut into slices of approximate ly 3 cm thickness. The slices were rinsed with wate r, sanitised and then drained in kitchen strainers. Ap proximately 300 g of the processed product were pac ked in nylon multilayers 15 μ m thick, 15 cm wide and 20 cm long. The packs were sealed, weighed and kept at 5 and 10 ± 2°C for 14 days. Fresh weight loss, baking tim e, enzymatic activity of polyphenol oxidases, perox idases and catalases, total soluble phenol content, and an tioxidant capacity were evaluated, as well as visua l analysis and incidence of Pseudomonas sp. Means of temperatures were compared by Tukey ́s test at 5% significance. Yam storage at 5°C reduced weight loss and kept vis ual quality for longer; it also reduced cooking tim e and the activity of the enzymes polyphenol oxidase and pero xidase. In contrast, it promoted higher content of total soluble phenols, as well as a higher catalase activ ity and antioxidant capacity. During the storage ti me, there was no incidence of Pseudomonas sp. Minimally processed yam stored at 10°C may be sold for up to six days, and yam stored at 5ºC for up to 14 days.

  12. Quality of Meat ( from Male Fallow Deer ( Packaged and Stored under Vacuum and Modified Atmosphere Conditions

    Directory of Open Access Journals (Sweden)

    N. Piaskowska

    2016-12-01

    Full Text Available This study evaluated the effect of vacuum and modified atmosphere (40% CO2+60% N2, MA packaging on the chemical composition, physicochemical properties and sensory attributes of chill-stored meat from 10 fallow deer (Dama dama bucks at 17 to 18 months of age. The animals were hunter-harvested in the forests of north-eastern Poland. During carcass dressing (48 to 54 h post mortem, both musculus longissimus muscles were cut out. Each muscle was divided into seven sections which were allocated to three groups: 0, A, and B. Samples 0 were immediately subjected to laboratory analyses. Samples A were vacuum-packaged, and samples B were packaged in MA. Packaged samples were stored for 7, 14, and 21 days at 2°C. The results of the present study showed that the evaluated packaging systems had no significant effect on the quality of fallow deer meat during chilled storage. However, vacuum-packaged meat samples were characterised by greater drip loss. Vacuum and MA packaging contributed to preserving the desired physicochemical properties and sensory attributes of meat during 21 days of storage. Regardless of the packaging method used, undesirable changes in the colour, water-holding capacity and juiciness of meat, accompanied by tenderness improvement, were observed during chilled storage.

  13. Free systems of rearing of chickens and layer hens: Quality of meat and eggs

    OpenAIRE

    Pavlovski, Zlatica; Škrbić, Zdenka; Lukić, Miloš

    2011-01-01

    Conventional broiler and egg production are basis of modern production of poultry meat and table eggs in the World and in our country. Standing requirements and demands for more and better in poultry production have induced continuous work on improvement of technologies of broiler rearing and production of table eggs. Improvements in technologies of production of meat and eggs depend on country's natural resources, environment conditions and, certainly, on consumer opinion and demands. In add...

  14. Use of sodium dodecyl sulfate pretreatment and 2-stage curing for improved quality of salted duck eggs.

    Science.gov (United States)

    Lian, Zixuan; Qiao, Longshan; Zhu, Guanghong; Deng, Yun; Qian, Bingjun; Yue, Jin; Zhao, Yanyun

    2014-03-01

    The effects of use of sodium dodecyl sulfate (SDS) pretreatment and 2-stage curing on the microbial, physicochemical, and microstructural qualities of salted duck eggs were studied. After pretreatment in 0.5% (w/v) SDS solution at room conditions for 15 min, no discolorations were observed and no microorganisms were detected on the egg shells. In the 2-stage curing process, 25% (w/v) and 30% (w/v) saline solutions were evaluated in the 1st step (Stage I, approximately 18 d), whereas 4% (w/v) saline solution was applied in the 2nd step (Stage II, approximately 15 d). Along with increased curing time, water content decreased and NaCl content increased in the egg yolks from approximately 0.40% to 0.86%, whereas the water content of egg albumen remained at approximately 85% during the 2-stage curing. More importantly, the NaCl content of albumen maintained at approximately 4.0% at Stage II curing. Yolk index as a sign of maturity for salted duck eggs reached 1 at the end of Stage I (18 d) and retained the same value during Stage II curing regardless of the NaCl concentration in the Stage I saline solution. Oil exudation in egg yolks increased as the time of curing increased. As seen from scanning electron microscopy, oil was released from yolk granules. This study indicated that SDS pretreatment is effective to reduce microbial load on the shells of fresh duck eggs and the 2-stage curing can improve physicochemical qualities of the salted duck eggs and shortened curing time to about 7 to 17 d as compared to the traditional 1-step curing method. Spoiled saline solution and uneven distribution of salt are the 2 major problems in producing salted duck eggs. Sodium dodecyl sulfate (SDS) pretreatment and 2-stage curing process have shown effective to solve these problems, respectively. The SDS pretreatment was able to remove microorganisms and soil from the surface of fresh egg shells, thus preventing the spoilage of the saline solution. The 2-stage curing process

  15. Organizing the pantry: cache management improves quality of overwinter food stores in a montane mammal

    Science.gov (United States)

    Jakopak, Rhiannon P.; Hall, L. Embere; Chalfoun, Anna D.

    2017-01-01

    Many mammals create food stores to enhance overwinter survival in seasonal environments. Strategic arrangement of food within caches may facilitate the physical integrity of the cache or improve access to high-quality food to ensure that cached resources meet future nutritional demands. We used the American pika (Ochotona princeps), a food-caching lagomorph, to evaluate variation in haypile (cache) structure (i.e., horizontal layering by plant functional group) in Wyoming, United States. Fifty-five percent of 62 haypiles contained at least 2 discrete layers of vegetation. Adults and juveniles layered haypiles in similar proportions. The probability of layering increased with haypile volume, but not haypile number per individual or nearby forage diversity. Vegetation cached in layered haypiles was also higher in nitrogen compared to vegetation in unlayered piles. We found that American pikas frequently structured their food caches, structured caches were larger, and the cached vegetation in structured piles was of higher nutritional quality. Improving access to stable, high-quality vegetation in haypiles, a critical overwinter food resource, may allow individuals to better persist amidst harsh conditions.

  16. The improvement of eggs quality of Mojosari duck (Anas javanica with soybean husk fermentation using cellulolytic bacteria of Spodoptera litura

    Directory of Open Access Journals (Sweden)

    Sri Hidanah

    2018-05-01

    Full Text Available Aim: This study was aimed to improve the quality of the eggs of Mojosari duck (Anas javanica through complete feeding containing soybean husk was fermented using cellulolytic bacteria of Spodoptera litura. Materials and Methods: This study consisted of three stages: The first stages, isolation and identification of cellulolytic bacteria from S. litura; the second stage, the fermentation of soybean husk through the application of bacterial cellulolytic isolate from the first stage; and the third stage, the application of the best complete feed formulation from the second stage to Mojosari duck. Results: There are four dominant bacteria: Bacillus sp., Cellulomonas sp., Pseudomonas sp., and Cytophaga sp. Furthermore, the best reduction of the crude fiber of soybean husks is the use of Cellulomonas sp. bacteria. The final of the study, the quality of the eggs of Anas javanica, was improved, as indicated by cholesterol decrease from the yolk without the decrease of egg weight and eggshell thickness, although the decrease in egg yolk color was inevitable. Conclusion: Soy husk fermentation using cellulolytic bacteria of S. litura was added to complete feeding can be performed to improve the quality of the eggs of Mojosari duck.

  17. Effects of Leaf Extracts of Selected Plants on Quality of Stored Citrus sinensis (Sweet Orange Juice

    Directory of Open Access Journals (Sweden)

    Oluwagbenga O. ADEOGUN

    2017-06-01

    Full Text Available Reduction in the quality of fruits during storage has been a concern to the consumers and the effect can be felt on the economy of developing countries. Leaves of plants such as Canna indica, Megaphrynium macrostachyum and Thaumatococcus daniellii have been documented as food packaging materials in West Africa. Based on this, the quality of stored sweet orange juice was investigated using ethanolic extracts of leaves of C. indica, M. macrostachyum and T. daniellii to enhance the shelf life of the juice. The extracts were used to assess the quality of juice for 30 days using quantitative parameters such as total soluble solid, browning potential, pH, microbial analysis and turbidity at 4 oC and at room temperature (27-31 oC. The qualitative and quantitative phytochemical constituents of the extracts were determined. The extracts’ toxicity was determined using Brine shrimp. The quality assessment evidently revealed that the freshly squeezed orange juice with the extracts possess tolerable activity to enhance the shelf life of orange juice. The leaf extract of M. macrostachyum had the highest preservation rate on the juice after 30 days. The qualitative phytochemical screening revealed the presence of alkaloid, tannin, saponins, flavonoids, steroids and terpenoids in the three plants tested. The quantitative phytochemical analysis of the most active extracts in the three plants revealed that M. macrostachum had the highest contents of alkaloids (107.48 mg/g and flavonoids (56.92 mg/g.The study showed that the extracts were non-lethal on Brine shrimp. This study ascertained the potential preservative qualities of the test plants for enhancing the shelf-life of orange juice.

  18. The effect of dietary protein and lysine on egg quality and production of laying hens during 28-42 weeks of age

    Directory of Open Access Journals (Sweden)

    Hasan Mohammadi Emarat

    2015-04-01

    Full Text Available An experiment was conducted to evaluate the effect of dietary crude protein and lysine levels on quality and quantity of egg production. Fifteen diets consisted of 3 levels of protein (14, 15 and 16% and 5 levels of lysine (0.71, 0.74, 0.77, 0.80 and 0.83 % in a 35 factorial arrangement were provided. Each diet was randomly fed to 4 replicates of 12 birds, during four periods of 4 weeks (28-44wks of age. Egg number and mortality was recorded daily, whereas feed consumption determined for each period. Eggs from each replicate were weighed at the end of three consecutive days of each period and six eggs were used to measure the egg quality characteristics. Although the feed intake did not affected by dietary protein but the egg production, egg mass and feed conversion were improved significantly (p

  19. Shopping for fruits and vegetables. Food and retail qualities of importance to low-income households at the grocery store.

    Science.gov (United States)

    Webber, Caroline B; Sobal, Jeffery; Dollahite, Jamie S

    2010-04-01

    Purchasing fruits and vegetables is an integral part of managing food consumption and dietary quality. This study examined how low-income adults who had primary responsibility for household food purchases considered retail produce decisions. We used a qualitative research approach based on grounded theory and an ecological conceptual framework. Twenty-eight low-income rural, village, and inner city heads of households in upstate New York, USA, were selected by purposive and theoretical sampling and interviewed about fruit and vegetable shopping habits, attitudes toward local food stores, and where and how they would prefer to buy produce. Analyses revealed their concerns were organized around five themes: store venue; internal store environment; product quality; product price; relationships with the stores. An unanticipated finding was the differing social relations that appear to exist between participant consumers, store employees and management, and the store itself as a representation of the larger retail food system. Attitudes toward retail food stores in this study are described as passive or fatalistic indifference, supportive, opportunistic, and confrontational (change agents). These attitudes are related to how shoppers considered retail fruit and vegetable choice, access, and availability. These findings suggest ways to individualize nutrition education and consumer education messages. Copyright 2009 Elsevier Ltd. All rights reserved.

  20. Sensory quality and energy use for scrambled eggs and beef patties heated in institutional microwave and convection ovens

    Energy Technology Data Exchange (ETDEWEB)

    Cremer, M.L.

    1982-05-01

    Scrambled eggs (96 portions) and beef patties (96 portions) were heated in institutional microwave and convection ovens to determine energy use in heating and sensory quality of food. For both products, significantly (P < 0.01) more energy (BTU) was used for heating in the convection than in the microwave oven and respective amounts (BTU) were 28658.7 and 9385.7 for eggs; 31313.3 and 9365.0 for beef patties. All scores for sensory quality were significantly (P < 0.01) higher for eggs heated in the microwave than in the convection, but for beef patties, scores were higher for all characteristics and significantly (P < 0.01) higher for appearance, flavor, and general acceptability after heating in the convection rather than the microwave oven.

  1. Experience with Quality Assurance in Two Store-and-Forward Telemedicine Networks.

    Science.gov (United States)

    Wootton, Richard; Liu, Joanne; Bonnardot, Laurent; Venugopal, Raghu; Oakley, Amanda

    2015-01-01

    Despite the increasing use of telemedicine around the world, little has been done to incorporate quality assurance (QA) into these operations. The purpose of the present study was to examine the feasibility of QA in store-and-forward teleconsulting using a previously published framework. During a 2-year study period, we examined the feasibility of using QA tools in two mature telemedicine networks [Médecins Sans Frontières (MSF) and New Zealand Teledermatology (NZT)]. The tools included performance reporting to assess trends, automated follow-up of patients to obtain outcomes data, automated surveying of referrers to obtain user feedback, and retrospective assessment of randomly selected cases to assess quality. In addition, the senior case coordinators in each network were responsible for identifying potential adverse events from email reports received from users. During the study period, there were 149 responses to the patient follow-up questions relating to the 1241 MSF cases (i.e., 12% of cases), and there were 271 responses to the follow-up questions relating to the 639 NZT cases (i.e., 42% of cases). The collection of user feedback reports was combined with the collection of patient follow-up data, thus producing the same response rates. The outcomes data suggested that the telemedicine advice proved useful for the referring doctor in the majority of cases and was likely to benefit the patient. The user feedback was overwhelmingly positive, over 90% of referrers in the two networks finding the advice received to be of educational benefit. The feedback also suggested that the teleconsultation had provided cost savings in about 20% of cases, either to the patient/family, or to the hospital/clinic treating the patient. Various problems were detected by regular monitoring, and certain adverse events were identified from email reports by the users. A single aberrant quality reading was detected by using a process control chart. The present study demonstrates

  2. The physiology and toxicology of salmonid eggs and larvae in relation to water quality criteria

    International Nuclear Information System (INIS)

    Finn, Roderick Nigel

    2007-01-01

    The purpose of this review is to collate physiological knowledge on salmonid eggs and larvae in relation to water quality criteria. Salmonid genera reviewed include Coregonus, Thymallus, Salvelinus, Salmo, and Oncorhynchus spp. When physiological data for salmonids are lacking, the zebrafish and medaka models are included. The primary focus is on the underlying mechanisms involved in the hydro-mineral, thermal, and respiratory biology with an extended section on the xenobiotic toxicology of the early stages. Past and present data reveal that the eggs of salmonids are among the largest shed by any broadcast spawning teleost. Once ovulated, the physicochemical properties of the ovarian fluid provide temporary protection from external perturbations and maintain the eggs in good physiological condition until spawning. Following fertilisation and during early development the major structures protecting the embryo from poor water quality are the vitelline membrane, the enveloping layer and the chorion. The vitelline membrane is one of the least permeable membranes known, while the semi-permeable chorion provides both physical and chemical defense against metals, pathogens, and xenobiotic chemicals. In part these structures explain the lower sensitivity of the eggs to chemical imbalance compared to the larvae, however the lower metabolic rate and the chronology of gene expression and translational control suggest that developmental competence also plays a decisive role. In addition, maternal effect genes provide a defense potential until the mid-blastula transition. The transition between maternal effect genes and zygotic genes is a critical period for the embryo. The perivitelline fluids are an important trap for cations, but are also the major barrier to diffusion of gases and solutes. Acidic environmental pH interferes with acid-base and hydromineral balance but also increases the risk of aluminium and heavy metal intoxication. These risks are ameliorated somewhat by

  3. The physiology and toxicology of salmonid eggs and larvae in relation to water quality criteria

    Energy Technology Data Exchange (ETDEWEB)

    Finn, Roderick Nigel [Department of Biology, University of Bergen, Allegaten 41, N-5020 Bergen (Norway)]. E-mail: nigel.finn@bio.uib.no

    2007-03-30

    The purpose of this review is to collate physiological knowledge on salmonid eggs and larvae in relation to water quality criteria. Salmonid genera reviewed include Coregonus, Thymallus, Salvelinus, Salmo, and Oncorhynchus spp. When physiological data for salmonids are lacking, the zebrafish and medaka models are included. The primary focus is on the underlying mechanisms involved in the hydro-mineral, thermal, and respiratory biology with an extended section on the xenobiotic toxicology of the early stages. Past and present data reveal that the eggs of salmonids are among the largest shed by any broadcast spawning teleost. Once ovulated, the physicochemical properties of the ovarian fluid provide temporary protection from external perturbations and maintain the eggs in good physiological condition until spawning. Following fertilisation and during early development the major structures protecting the embryo from poor water quality are the vitelline membrane, the enveloping layer and the chorion. The vitelline membrane is one of the least permeable membranes known, while the semi-permeable chorion provides both physical and chemical defense against metals, pathogens, and xenobiotic chemicals. In part these structures explain the lower sensitivity of the eggs to chemical imbalance compared to the larvae, however the lower metabolic rate and the chronology of gene expression and translational control suggest that developmental competence also plays a decisive role. In addition, maternal effect genes provide a defense potential until the mid-blastula transition. The transition between maternal effect genes and zygotic genes is a critical period for the embryo. The perivitelline fluids are an important trap for cations, but are also the major barrier to diffusion of gases and solutes. Acidic environmental pH interferes with acid-base and hydromineral balance but also increases the risk of aluminium and heavy metal intoxication. These risks are ameliorated somewhat by

  4. Effect of Post-Harvest Treatments on Enzyme Activity and Quality of Cold Stored Ber Fruit

    Directory of Open Access Journals (Sweden)

    Sukhjit K. JAWANDHA

    2012-11-01

    Full Text Available Ber (Zizyphus mauritiana Lamk fruits are perishable in nature and have poor shelf- life. To extend the storage life of ber fruits different post-harvest treatments, like CaCl2 (0.5, 1.0 and 2.0%, Ca(NO32 (0.5, 1.0 and 2.0%, gibberellic acid (GA3 (20, 40 and 60 ppm and Bavistin (0.1% were given to fruits and their effect was studied on the storage life and quality of Umran ber (Zizyphus mauritiana Lamk fruits under cold storage conditions. Fruits of uniform size and colour were harvested, from healthy plants, and subjected to post harvest dip of different chemicals, before packing in CFB boxes and placed in cold storage (3-5C and 85-90% RH They have been evaluated after 10, 20 and 30 days of storage for physiological loss in weight (PLW, firmness, pectin methyl esterase (PME activity and palatability rating. The PLW increased and fruit firmness decreased during storage at each treatment. The sensory rating increased up to 10 days at all treatments, except control but subsequently it decreased during storage. The increase rate in PME activity was faster, up to 10 days, in untreated fruits, while treated fruits showed slower rise in PME activity, up to 20 days with a decline afterwards. It can be concluded that ber fruits can be stored up to 20 days by post-harvest treatment using GA3 at 60 ppm, with acceptable quality.

  5. Effect of long-term selection for egg production on eggshell quality of Japanese quail (Coturnix japonica).

    Science.gov (United States)

    Fathi, M M; El-Dlebshany, A E; El-Deen, M Bahie; Radwan, L M; Rayan, G N

    2016-11-01

    An experiment was conducted to evaluate egg quality and ultrastuctural measurements of eggshell using a Scanning Electron Microscope (SEM) in 2 lines (selected and control) of Japanese quail. A selection program was applied over 22 consecutive generations for higher egg production and lower broken egg percentage. The results revealed that the females of the selected line produced significantly (P < 0.01) higher egg mass compared to that of the control line. Also, the selection procedure significantly improved feed conversion ratio. The eggshells of the selected line had a higher breaking strength compared to those of the control line, although there was no difference between them in shell thickness. Significantly higher wet (P < 0.01) and dry (P < 0.05) eggshell percentages were found in the selected line. In general, the eggshells of the selected line had a lower total score (good) of ultrastructural evaluation compared to the control line. According to scanning electron microscope data, the incidence of certain structural variants was more common in eggshells of the control line suggesting poor shell strength. The incidence of alignment was more prevalent in control eggshells compared to selected ones, suggesting lower resistance to breakage. Late fusion and large interstitial spaces of the palisade layer indicating decreased resistance to fracture were observed in control eggshells. It could be concluded that the improvement eggshell quality may be caused by the long-term selection for lower cracked and broken egg rates from generation to generation. © 2016 Poultry Science Association Inc.

  6. Effects of different levels of expanded perlite on the performance and egg quality traits of laying hens

    Directory of Open Access Journals (Sweden)

    Fatma Karakas Oguz

    Full Text Available ABSTRACT The influence of different levels of expanded perlite on the performance and egg quality traits was studied in laying hens. Forty Lohmann Brown females at 30 weeks of age were randomly assigned to four groups consisting of five replicates with two hens in each. Four diet groups were supplemented with 0% (control group, 1%, 2%, and 3% perlite, respectively. Feed and water were provided ad libitum. There were no significant differences in final body weight, feed intake, egg yield, and egg weight. Feed conversion ratio and egg weight decreased with addition of 2% perlite. Dietary perlite supplementation has no significant effects on shape, yolk, and albumen index. Haugh unit was affected significantly by addition of 2% perlite. Fecal pH, dry matter, and NH3-N did not significantly differ among treatments. Dietary perlite has no negative effect on performance and egg quality traits except 2% perlite group. Dietary expanded perlite can be added at 1% level in laying hen rations without changing the animal performance.

  7. MicroRNA expression profiles from eggs of different qualities associated with post-ovulatory ageing in rainbow trout (Oncorhynchus mykiss)

    Science.gov (United States)

    Background: Egg quality is an important aspect in rainbow trout farming. Post-ovulatory aging is one of the most important factors affecting egg quality. MicroRNAs (miRNAs) are the major regulators in various biological processes and their expression profiles could serve as reliable biomarkers for v...

  8. The effect of phytobiotics, organic acids and humic acids on the utility and egg quality of laying hens

    Directory of Open Access Journals (Sweden)

    Henrieta Arpášová

    2017-11-01

    Full Text Available The aim of this study was the assessment of an influence of supplement of dietary herbal additive in combination with organic acids into feed mixture or drinking water of laying hens on performance parameters and egg quality. The Lohmann Brown Lite laying hens (n = 30 were divided into 3 groups (n = 10, and fed for 20 weeks ad libitum with complete feed mixtures (CFM. Hens in the control group received the complete feed mixture (CFM and drank drinking water without any supplements. In the first experimental group hens received CFM without supplements but phytobiotics (bergamot oil (Citrus bergamia, thyme (Thymus vulgaris, clove (Syzygium aromaticum, pepper (Piper nigrum in combination with the fumaric acid and citric acid at 60 mg per 1 liter of water were added to their drinking water. In the second experimental group was CFM enriched with humic acids in the concentration of 0.5%, and phytobiotcs with organic acids at the same dose as in the first experimental group were added to their drinking water. Monitored parameters: body weight (g, egg production (%, the weight of all produced eggs (g, egg albumen weight (g, egg albumen index, Haugh unit (HU, egg yolk weight (g, egg yolk index, egg yolk colour (° HLR, egg shell weight (g and egg shell strength (N.cm-2. The results showed no significant differences between the both experimental groups and the control group in the parameter body weight of hens (P>0.05. The highest average body weight was found in the hens from the second experimental group (values in the order of groups:  1792.22 ± 80.85; 1768.42 ±55.55; 1820.12 ±78.56 g±S.D.. We observed positive trend of increasing of egg production by adding of used supplements, especially in the second experimental group with the addition of humic acids, although with no statistically significant difference compared to the control group (P>0.05. The mean laying intensity in the order of groups: 90.42; 91.16; 91.56%. We observed statistically

  9. Fermented feed for laying hens: effects on egg production, egg quality, plumage condition and composition and activity of the intestinal microflora.

    Science.gov (United States)

    Engberg, R M; Hammershøj, M; Johansen, N F; Abousekken, M S; Steenfeldt, S; Jensen, B B

    2009-03-01

    1. An experiment with a total of 480 hens (Babcock) was carried out from 16 to 38 weeks of age to evaluate the suitability of wet fermented feed (feed water ratio, 1:1.2-1:1.4) for layers, taking aspects of nutrition and gastrointestinal health into consideration. The production performance, egg shell quality, plumage condition, litter dry matter (DM) content, as well as the composition and activity of the intestinal microbial flora were analysed. 2. Fermented feed was characterised by a high concentration of lactic acid (160-250 mmol/kg feed) and a moderate level of acetic acid (20-30 mmol/kg feed), high numbers of lactic acid bacteria (log 9-10 CFU/g feed) and a pH of approximately 4.5. Feed fermentation reduced the concentration of dietary sugar from 32.1 to 7.3 g/kg DM and the phytate bound phosphorus from 2.7 to 1.9 g/kg DM. 3. Fermented feed seemed to loose attractiveness for the birds quite rapidly, resulting in a more aggressive behaviour and a poorer plumage condition than in birds given dry feed. The use of fermented feed reduced the litter DM content. 4. During the experimental period, the body weight gain of hens receiving fermented feed was 80 g higher than of hens fed the dry mash. Presumably because of an extended adaptation time to the feed, the onset of lay occurred later when hens were fed on fermented feed, resulting in non-significantly reduced total egg production (75 vs. 82%). 5. There was no significant difference between groups with respect to the total egg mass production (g/d/hen, 42 and 45 for fermented feed and dry mash, respectively). Throughout the experimental period, the feed DM intake of hens fed with fermented feed was lower than that of hens receiving the dry mash (110 vs. 125 g). From week 26 to 37, fermented feed improved the feed conversion as compared with the dry mash (g feed DM/g egg mass, 2.28 vs. 2.53). 6. The use of fermented feed increased egg weight in the period from 34 to 37 weeks (61.4 vs. 60.0) and increased shell

  10. Quality evaluation of garlic irradiated in Argentine and stored in Brazil

    International Nuclear Information System (INIS)

    Curzio, Osvaldo A.; Croci, Clara A.; Domarco, Rachel E.; Spoto, Marta H.F.; Blumer, Lucimara; Walder, Julio M.M.

    1997-01-01

    This work was undertaken to evaluate the quality of garlic Colorado, irradiated in Argentina and stored for long period of time under environmental conditions in Brazil. Two samples of 100 kg each were selected from high quality garlic harvested in December/1995 from a region close to the Universidad Nacional del Sur. At 30 days after harvesting one of the samples were irradiated with a dose of 60 Gy. Both samples, irradiated and non irradiated, were transported by road from the Laboratorio de Radioisotopos of the Universidad Nacional del Sur, Bahia Blanca, Argentina, to the Centro de Energia Nuclear na Agriculture (CENA-USP), Piracicaba, Sao Paulo, Brazil. The effects of irradiation on weigh loss , discard, germination and sensorial analysis were nonthly observed on CENA among 30and 180 days of storage. The evaluation of germination evidences the benefits of the radioinhibition process. The irradiated bulbs did not exhibit any intern bud, however the non-irradiated bulbs exhibit any intern bud, however the non-irradiated bulbs exhibit any intern bud, however the non-irradiated bulbs exhibit 100% of germination on the period of storage. At the end of the period of storage, the weigh loss of the irradiated garlic was smaller than the non-irradiate one. The percentage of discard, evaluated as intern germination, scatying and whitering, was 43% on the irradiated sample. The analysis of sensorial parameters shows no difference between irradiated and non-irradiated garlic, so irradaition did not affect the sensorial quality of the product. (author). 12 refs., 8 tabs

  11. Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay

    Directory of Open Access Journals (Sweden)

    ESPB Saldanha

    2009-12-01

    Full Text Available This study was carried out to evaluate the effects of dietary trace mineral levels and sources on egg quality parameters of second-cycle semi-heavy layers. A number of 360 72-week-old layers were submitted to forced molting. Upon return of lay (83 weeks of age, birds were distributed according to a completely randomized experimental design of six treatments with six replicates of 10 birds each. The control treatment consisted of 0.10% dietary supplementation of trace minerals from inorganic sources, which was proportionally replaced by five levels (110, 100, 90, 80, 70% of an organic trace mineral supplement containing 30, 30, 40, 6, 0.61, and 0.3 g/kg product of Zn, Fe, Mn, Cu, I, and Se, respectively. All diets contained equal protein, energy, and amino acid levels. Every 28 days of the experimental period (112 days four eggs per replicate were collected for egg quality evaluation. The following parameters were evaluated: specific gravity, yolk, albumen and eggshell percentages, yolk index, Haugh units, and eggshell thickness and breaking strength. One sample per replicate, consisting of the pool of the yolks of three eggs collected at the end of each experimental period, was used to assess protein and mineral (Ca, P, Cu, Fe, Mn, and Zn contents. The results were submitted to ANOVA, and means to the test of Tukey at 5% significance level. The evaluated trace mineral levels and sources did not influence any of the studied egg quality parameters. It was concluded that reducing organic trace mineral supplementation in up to 70% relative to 100% inorganic trace mineral supplementation does not affect egg parameters and therefore, can be applied to the diet of semi-heavy layers in their second cycle of lay.

  12. The effects of laying hen housing systems on egg safety and quality. In: Achieving sustainable production of eggs, Vol 1: Safety and Quality

    Science.gov (United States)

    Transitions in laying hen management and housing systems have constantly occurred throughout the history of commercial egg production. Around the world, there has been a rapid shift in hen housing requirements since the turn of the current century. In most cases, the changes in hen housing require...

  13. Evaluation of the alpha-amylase activity as an indicator of pasteurization efficiency and microbiological quality of liquid whole eggs.

    Science.gov (United States)

    Silva, Guilherme Resende da; Menezes, Liliane Denize Miranda; Lanza, Isabela Pereira; Oliveira, Daniela Duarte de; Silva, Carla Aparecida; Klein, Roger Wilker Tavares; Assis, Débora Cristina Sampaio de; Cançado, Silvana de Vasconcelos

    2017-09-01

    In order to evaluate the efficiency of the pasteurization process in liquid whole eggs, an UV/visible spectrophotometric method was developed and validated for the assessment of alpha-amylase activity. Samples were collected from 30 lots of raw eggs (n = 30) and divided into three groups: one was reserved for analysis of the raw eggs, the second group was pasteurized at 61.1°C for 3.5 minutes (n = 30), and the third group was pasteurized at 64.4°C for 2.5 minutes (n = 30). In addition to assessing alpha-amylase activity, the microbiological quality of the samples was also evaluated by counting total and thermotolerant coliforms, mesophilic aerobic microorganisms, Staphylococcus spp., and Salmonella spp. The validated spectrophotometric method demonstrated linearity, with a coefficient of determination (R2) greater than 0.99, limits of detection (LOD) and quantification (LOQ) of 0.48 mg kg-1 and 1.16 mg kg-1, respectively, and acceptable precision and accuracy with relative standard deviation (RSD) values of less than 10% and recovery rates between 98.81% and 105.40%. The results for alpha-amylase activity in the raw egg samples showed high enzyme activity due to near-complete hydrolysis of the starch, while in the eggs pasteurized at 61.1°C, partial inactivation of the enzyme was observed. In the samples of whole eggs pasteurized at 64.4°C, starch hydrolysis did not occur due to enzyme inactivation. The results of the microbiological analyses showed a decrease (P pasteurized egg samples according to the two binomials under investigation, compared to the raw egg samples, which showed high rates of contamination (P pasteurization, only one sample (3.33%) was positive for Salmonella spp., indicating failure in the pasteurization process, which was confirmed by the alpha-amylase test. It was concluded that the validated methodology for testing alpha-amylase activity is adequate for assessing the efficiency of the pasteurization process, and that the time

  14. Feed supplementation with red seaweeds, Chondrus crispus and Sarcodiotheca gaudichaudii, affects performance, egg quality, and gut microbiota of layer hens.

    Science.gov (United States)

    Kulshreshtha, Garima; Rathgeber, Bruce; Stratton, Glenn; Thomas, Nikhil; Evans, Franklin; Critchley, Alan; Hafting, Jeff; Prithiviraj, Balakrishnan

    2014-12-01

    The aim of this study was to evaluate the effect of the inclusion of red seaweed supplementation to standard poultry diets on production performance, egg quality, intestinal histology, and cecal short-chain fatty acids in Lohmann Brown Classic laying hens. A total of 160 birds were randomly assigned to 8 treatment groups. Control hens were fed a basal layer diet; positive control hens were fed a diet containing 2% inulin; and 6 treatment groups were fed a diet containing one of the following; 0.5, 1, or 2% Chondrus crispus (CC0.5, CC1, and CC2, respectively) and one of the same 3 levels of Sarcodiotheca gaudichaudii (SG0.5, SG1, and SG2, respectively). Dietary supplementation had no significant effect on the feed intake, BW, egg production, fecal moisture content, and blood serum profile of the birds. The feed conversion ratio per gram of egg was significantly more efficient (P = 0.001) for CC2 and SG2 treatments. Moreover, SG1 supplementation increased egg yolk weight (P = 0.0035) and birds with CC1 supplementation had higher egg weight (P = 0.0006). The SG2 and CC2 groups had greater (P Poultry Science Association Inc.

  15. Effect of Post-Harvest Treatments on Enzyme Activity and Quality of Cold Stored Ber Fruit

    Directory of Open Access Journals (Sweden)

    Sukhjit K. JAWANDHA

    2012-11-01

    Full Text Available Ber (Zizyphus mauritiana Lamk fruits are perishable in nature and have poor shelf- life. To extend the storage life of ber fruits different post-harvest treatments, like CaCl2 (0.5, 1.0 and 2.0%, Ca(NO32 (0.5, 1.0 and 2.0%, gibberellic acid (GA3 (20, 40 and 60 ppm and Bavistin (0.1% were given to fruits and their effect was studied on the storage life and quality of �Umran� ber (Zizyphus mauritiana Lamk fruits under cold storage conditions. Fruits of uniform size and colour were harvested, from healthy plants, and subjected to post harvest dip of different chemicals, before packing in CFB boxes and placed in cold storage (3-5�C and 85-90% RH They have been evaluated after 10, 20 and 30 days of storage for physiological loss in weight (PLW, firmness, pectin methyl esterase (PME activity and palatability rating. The PLW increased and fruit firmness decreased during storage at each treatment. The sensory rating increased up to 10 days at all treatments, except control but subsequently it decreased during storage. The increase rate in PME activity was faster, up to 10 days, in untreated fruits, while treated fruits showed slower rise in PME activity, up to 20 days with a decline afterwards. It can be concluded that ber fruits can be stored up to 20 days by post-harvest treatment using GA3 at 60 ppm, with acceptable quality.

  16. The effects of apple pulp and probiotic on performance, egg quality traits and blood parameters of laying hens

    Directory of Open Access Journals (Sweden)

    Shabaz Noranian

    2016-11-01

    Full Text Available Introduction Apple is one of the most important fruits that is produced in the large amount in Iran. It is a good source of vitamins and minerals and active fiber. Most of the apples that product in Iran are use in food industry for producing different kinds of apple juices. After Juicing, more than 20% of apple, remain as waste. The remained matter contain considerable amount of vitamins and minerals that usually found in fresh apple, moreover it is rich source of pectin and crude fiber. Generally this byproduct discharge to environment and cause some serious environmental problems. It is thought that use of apple pulp as a part of apple waste in laying hens diets not only prevent some environmental problems, but also can improve their performance, egg quality traits, and blood biochemical parameters and reduce the production cost. The current study has been designed to investigate these traits. Materials and Methods This experiment was carried out on 192 Hi-line (W36 laying hens in a completely randomized design as (2*2 factorial arrangement with two levels of apple pulp (0 and 4% and two levels of probiotic (protexin (0 and 0.005% in 4 treatments, 4 replicates and 12 birds per replicate for 12 weeks (65-76 weeks. Results and Discussion Using apple pulp and probiotic in diets improved the egg production performance, egg quality traits and blood parameters of laying hens (P0.05. Probiotic improved egg weight, egg production percentage, egg mass, feed conversion ratio and Haugh unit. In interaction effects, using apple pulp and probiotic improved the performance and egg quality traits of laying hens. The highest egg weight, egg production, egg mass and the best feed conversion were obtained with diet containing 4% apple pulp and 0.005% probiotic. Also the highest amount of albumin, eggshell thickness and Haugh unit were observed with 4% apple pulp and 0.05% probiotic. Apple pulp decreased the blood levels of triglyceride, cholesterol and albumin

  17. Survival of Ascaris eggs and hygienic quality of human excreta in Vietnamese composting latrines

    DEFF Research Database (Denmark)

    Jensen, Peter K. M.; Phuc, Pham D.; Konradsen, Flemming

    2009-01-01

    this is the length of time that farmers have available to produce fertilizer between two cropping seasons. This study aimed to investigate whether hygienically safe fertilizer could be produced in the latrines within this period of time. Methods: By inoculating eggs of the helminth parasite indicator Ascaris suum...... from 9.4 to 11.6, a >99% die-off of eggs was obtained after 105 to 117 days of storage for all lime concentrations and 97% of eggs were nonviable after 88 days of storage. The most critical parameter found to determine the die-off process was the amount of ammonia (urine) in the excreta which indicates...... that longer storage periods are needed for parasite egg die-off if urine is separated from the excreta. Conclusion: By inactivating >99% of all A. suum eggs in human excreta during a storage period of only three months the commonly used Double Vault Composting (DVC) latrine, in which urine is not separated...

  18. Brand Name, Store Image, and Country-of-Origin: The Effects on Consumers' Perception of Quality and Price.

    Science.gov (United States)

    King, Margaret C. A.

    1993-01-01

    A review of literature indicated that, with regard to brand labels, consumers' perception of price, but not of quality, was affected. Consumers expected to pay more for goods bought in a higher status store and rated imported goods as being more expensive than domestically produced goods. Products from developing countries received lower quality…

  19. Egg shell and yolk quality characteristics of layers fed with sugarcane press residue in soya and fish based diets

    Directory of Open Access Journals (Sweden)

    N. Suma

    2015-02-01

    Full Text Available Aim: Sugarcane press residue (SPR, a by-product of sugarcane industry, which is rich in inorganic salts was assessed at different levels in both soya based and fish based diets of layers for egg shell and yolk quality characteristics. Materials and Methods: SPR was incorporated in 32-week-old white leghorn layer diets at 0%, 5%, 10% and 15% either in the soya based or fish based diets to form T1 to T8 diets, respectively. Each diet was offered to five replicates of four laying hens each constituting a total of one sixty birds kept for 84 days under colony cages. Results: Mean egg shell thickness obtained from eggs of experimental hens measured was 0.342, 0.329, 0.320, 0.322, 0.319, 0.332, 0.328 and 0.336 mm in T1 through T8 groups, respectively. About the main factor effects, both showed non-significant results. Similarly, influence of different treatment diets, in imparting colour to the yolks, was found to be non-significant (p>0.05 at different 28-day time intervals. Further, the average yolk index values ranged non-significantly from 0.360 (T6 to 0.383 (T4. Conclusion: The SPR can be incorporated into layer diet as a source of inorganic as well as organic nutrients without affecting its egg quality characteristics.

  20. The effect of dry caper (capparis spinosa) fruit on egg production and quality characteristics of laying hens

    International Nuclear Information System (INIS)

    Yildirim, A.; Tahtali, Y.; Sen, M. I.; Duman, M.

    2014-01-01

    This study was conducted to determine the effect of increasing dietary inclusion of dry Caper (Capparis spinosa) fruit (DCF) on egg production and quality characteristics of laying hens between 20 and 32 weeks of age. Four groups of commercial hens (ATAK-S) were fed with diets containing 0, 5, 10 and 15 g DCF/kg. The results showed that final body weight, feed intake, shape index (SI) and morning hen - day egg yield were influenced by dietary supplementation of DCF (P 0.05) during the entire experiment. The lightness (L*) and redness (a*) values for egg shell color were similar (P>0.05) in the DCL supplemented groups as compared to the control group. The yellowness (b*), Hue angle (H), chroma (C*) and E* values were lower (P<0.05) in 15 g DFC/kg group when compared with the control. Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP) and total phenolics amount of DCF were 43.75+-0.680 mmol trolox/kg, 60.03+-3.710 mmol TEAC/kg and 3.16+-0.060 g gallic acid equivalents (GAE)/kg, respectively. Based on the results from the current study, the dietary supplementation with dry DCF had adverse effects on productivity performance traits and egg quality. (author)

  1. Substitution of Soybean Meal with Indigofera zollingeriana Top Leaf Meal on Egg Quality of Cortunix cortunix japonica

    Directory of Open Access Journals (Sweden)

    F. Faradillah

    2015-12-01

    Full Text Available This research aimed to study the substitution of soybean meal (SBM with Indigofera zollingeriana top leaf meal (ILM in the diet on egg quality of Japanese quails. The experiment used a completely randomized design with five treatments and four replications (ten quails of each replication. The dietary treatment contained five combination of SBM and ILM, R0= diets contained 18% SBM without ILM, R1= diet contained 16.2% SBM and 2.66% ILM, R2= diet contained 14.4% SBM and 5.32% ILM, R3= diet contained 12.6% SBM and 7.98% ILM, R4= diet contained 9% SBM and 13.3% ILM. The results showed that the use of 13.3% ILM (R4 significantly (P<0.05 increased feed consumption, egg weight, yolk colour score, egg cholesterol, and reduced malondialdehyde level. The conclusion of this study was I. zollingeriana top leaf meal could be used as much as 13.3% in the diets. The use of I. zollingeriana top leaf meal could improve the quality of eggs physically and chemically.

  2. Egg Allergy

    Science.gov (United States)

    ... Staying Safe Videos for Educators Search English Español Egg Allergy KidsHealth / For Teens / Egg Allergy What's in ... but it's worth it. What Happens With an Egg Allergy? Eggs aren't bad. But when you' ...

  3. PRODUCTIVITY OF LAYERS AND EGG QUALITY IN FREE RANGE AND CAGE SYSTEM OF HOUSING

    OpenAIRE

    Đ. Senčić; Danijela Butko

    2006-01-01

    The research was conducted with two groups of Lohmann Brown hybrid layers. Production of eggs lasted for 52 weeks. A control group of layers was kept in the conventional housing system, that is, in cages, while experimental group was kept in the free range system. Layers from the free range system, compared to those kept in cages, laid fewer eggs, (266:295), they consumed more feed on daily basis (129 g : 115 g), more feed per kilogram of egg weight (2.83 kg : 2.35 kg), they had higher mor...

  4. Accelerated shelf-life testing of quality loss for a commercial hydrolysed hen egg white powder.

    Science.gov (United States)

    Rao, Qinchun; Rocca-Smith, Jeancarlo R; Schoenfuss, Tonya C; Labuza, Theodore P

    2012-11-15

    In recent years, due to the specific health benefits associated with bioactive peptides and the reduction of protein allergenicity by enzymatic hydrolysis, the utilisation of protein hydrolysates in functional foods and beverages for both protein supplementation and clinical use has significantly increased. However, few studies have explored the moisture-induced effects on food protein hydrolysates, and the resulting changes in the structure and texture of the food matrix as well as the loss in functional properties of bioactive peptides during storage. The main purpose of this study is to determine the influence of water activity (a(w)) on the storage quality of a commercial spray-dried hydrolysed hen egg white powder (HEW). During storage at 45 °C for two months at different a(w)s (0.05-0.79), the selected physicochemical properties of the HEW samples were analysed. Overall, the effect of a(w) on the colour change of HEW at 45 °C for one month was similar to that of HEW after four months at 23 °C due to the presence of a small amount of glucose in HEW. Several structural changes occurred at a(w)s from 0.43 to 0.79 including agglomeration, stickiness and collapse. Kinetic analysis showed a first-order hyperbolic model fit for the change in the L(∗) value, the total colour difference (ΔE(∗)) and the fluorescence intensity (FI). There was a high correlation between colour change and fluorescence, as expected for the Maillard reaction. The reduction in the remaining free amino groups was about 5% at a(w) 0.50 and 6% at a(w) 0.79 after one month storage. In summary, during storage, the Maillard reaction and/or its resulting products could decrease the nutritional value and the quality of HEW. Copyright © 2012 Elsevier Ltd. All rights reserved.

  5. Effects of rearing systems on laying performance, egg quality, and serum biochemistry of Xianju chickens in summer.

    Science.gov (United States)

    Dong, X Y; Yin, Z Z; Ma, Y Z; Cao, H Y; Dong, D J

    2017-09-01

    The objective of this study was to compare the laying performance, egg quality, and serum biochemistry of hens maintained in conventional cage rearing system (CRS), flat net-rearing system (NRS), and free range system (FRS) under summer conditions. Indigenous Xianju chickens (n = 540) were randomly allocated into cages or pens of rearing system groups, within each system there were 5 replicates with 36 hens in each replicate. The experiment lasted between 21 and 29 wk of age. Hen-day egg production (P = 0.00) and egg mass (P = 0.00) were higher in the CRS but were similar in the NRS and FRS. Lowest egg weight (P = 0.02), yolk weight (P = 0.00) and yolk ratio (P = 0.01), and feed intake (P = 0.01) were observed from the FRS, whereas lowest feed conversion ratio (FCR) was recorded from the CRS (P = 0.01). Rearing systems had negligible effect on egg quality. Serum Ca (P = 0.04) and total protein (P = 0.03) levels were found to be higher in the CRS but were lower in the FRS. Serum levels of glucose (P = 0.01), cholesterol (P = 0.00), and triglyceride (P = 0.00) in the CRS increased compared with the NRS and FRS groups, whereas serum levels of high density lipoprotein cholesterol (HDL-C; P = 0.01) in the CRS decreased. It can be concluded that under summer conditions, Xianju chickens from CRS had an advantage in terms of productivity parameters, but exhibited higher levels of serum lipids and glucose. © 2017 Poultry Science Association Inc.

  6. Sobrevivência de Salmonella enteritidis em Ovos Contaminados Artificialmente, Após Desinfecção e Armazenados em Diferentes Temperaturas Survival of Salmonella enteritidis in Eggs Artificially Contaminated, After Disinfection and Stored at Different Temperatures

    Directory of Open Access Journals (Sweden)

    MR Barros

    2001-12-01

    Full Text Available Avaliou-se a contaminação da casca e do conteúdo interno de ovos inoculados com Salmonella enterica sorovar enteritidis fagotipo 4, lavados com água de torneira (AT ou solução de amônia quaternária (AQ e armazenados a 8ºC e 25ºC. Duzentos e cinqüenta e dois ovos foram divididos em três grupos. Os tratamentos de cada grupo consistiram de imersão em AT, AQ a 25ºC e a 43ºC. Após a secagem natural, todos os grupos foram contaminados com solução de S. enteritidis. Seguindo-se a contaminação, cada grupo tratado foi estocado a 8ºC ou 25ºC, e a presença de S. enteritidis na casca e no conteúdo interno foi avaliada após zero, 24, 96 e 168 horas. A sanitização com AQ mostrou-se eficiente na redução de S. enteritidis nas cascas dos ovos. O armazenamento dos ovos a 8ºC demonstrou ser preponderante na redução e na ausência de S. enteritidis na casca. Nos ovos lavados com AT, o armazenamento a 25ºC permitiu a permanência da bactéria nas cascas até 168 horas. Não se detectou S. enteritidis no conteúdo interno dos ovos em nenhum dos grupos.The contamination of eggshell and internal content of eggs that were inoculated with Salmonella enterica serovar enteritidis phagetype 4, washed with tap water (TW or quaternary ammonium compound (QA and stored at 8ºC and 25ºC was evaluated. Two hundred and fifty two eggs were distributed in three groups. Each treatment of the different groups was constituted by the immersion in TW, QA at 25ºC and at 43ºC. After natural dry, all groups were infected by a S. enteritidis solution. Following the challenge, each group was stored at 8ºC or at 25ºC, and the presence of S. enteritidis in the eggshell and internal content was evaluated after zero, 24, 96 and 168 hours. The use of QA demonstrated efficiency in S. enteritidis reduction of eggshell. The eggs stored at 8ºC revealed preponderancy in the reduction and the absence of S. enteritidis at the eggshell. In the TW washed eggs, the

  7. Egg shell quality and microstructure as affected by vitamin C, other feed additives and high environmental temperatures

    NARCIS (Netherlands)

    El-Boushy, A.R.

    1966-01-01

    The effects of climatic stress on egg formation (weight, shape, formation period, clutch size and blood calcium) and shell quality were estimated in White Leghorn and White Plymouth Rock hens. Constant environments were used with 85°F 75- 80% r.h., 75-77°F 50-60% r.h. and 55°F 50-60% r.h. as well as

  8. Effects of dietary n-3 and n-6 fatty acids levels on egg and larval quality of Eurasian perch

    DEFF Research Database (Denmark)

    Henrotte, E.; Overton, Julia Lynne; Kestemont, P.

    2008-01-01

    Three groups of 40 perch breeders were reared in order to study the effects of 3 different levels of dietary n-3 and n-6 fatty acids on egg quality. Two experimental diets, R1 and R2 (n-3/n-6 = 0.13 and 35.54, respectively), were compared to one commercial food, R3 (n-3/n-6 = 3.48.). Spawning and...

  9. Effect of dietary supplementation of organic zinc on laying performance, egg quality and some biochemical parameters of laying hens.

    Science.gov (United States)

    Abd El-Hack, M E; Alagawany, M; Amer, S A; Arif, M; Wahdan, K M M; El-Kholy, M S

    2018-04-01

    This study was conducted to evaluate the effects of zinc methionine (Zn-Met) supplementation on the performance, egg quality, antioxidant status and some biochemical parameters of blood serum in laying hens from 22 to 34 weeks of age. A total of 120 Hisex Brown laying hens of 22-week-old were randomly allocated into five treatments with six cage replicates for each (four hens/replicate). Dietary treatments consisted of the basal diet with no Zn-Met supplementation (control group) and basal diet supplemented with 25, 50, 75 or 100 mg Zn-Met/kg diet. No significant differences were observed on body weight, body weight gain or feed conversion ratio due to dietary Zn-Met supplementation. However, highly significant impact was observed on daily feed intake. Egg number, egg weight and egg mass were increased in the group fed diet supplemented with the highest level of Zn-Met (100 mg/kg of diet) as compared to other groups. All egg quality traits were statistically (p > .05 or .01) affected as a response to dietary Zn-Met supplementation except egg shape index, shell percentage and yolk index. In comparison with the control group, dietary supplementation of 25, 50, 75 or 100 mg Zn-Met/kg decreased serum triglyceride and LDL-cholesterol levels. Serum cholesterol level was increased with all dietary levels of Zn-Met in comparison with the control group. Dietary Zn-Met supplementation increased the serum content of zinc, where the highest values were recorded with 50 and 100 mg Zn-Met/kg diet. Dietary Zn-Met levels did not affect the antioxidant indices in blood serum except for the activity of copper-zinc superoxide dismutase (Cu-Zn-SOD). The activity of Cu-Zn-SOD was increased with Zn-Met supplementations with no differences among supplemental zinc levels. It is concluded that dietary Zn-Met supplementation reduced serum triglyceride, LDL-cholesterol and increased Zn status and resulted in promoting antioxidant ability of laying hens, and the addition of 100 mg Zn

  10. Effect of dietary heated oil and garlic supplementation on the meat and egg quality of Japanese quail

    International Nuclear Information System (INIS)

    El-Faramawy, A.A.

    2006-01-01

    A total number of 360 Japanese quail (14 days old) were used to study the effect of using 2% garlic as a supplement in order to overcome the adverse effect of adding 4% heated oil on their meat and egg quality. The chicks were equally and randomly arranged into 4 groups, each of three replicates. The first and second groups were supplemented with 4% cotton seed oil and 4% cotton seed oil + 2% garlic, respectively, while in both third and forth groups, cotton seed oil was replaced by 4% heated oil. The body weight and mortality rate were examined weekly. At 42 day of age, 9 birds from each group were slaughtered. Serum cholesterol, triglycerides, T3 and T4 were determined by RIA besides to cholesterol and fatty acid in meat. The experiment was completed with the remaining chicks for another 6 weeks for analysis of egg cholesterol, triglyceride and fatty acids. The data revealed that addition of 2% garlic to both cotton seed and heated oil significantly decreased serum and egg cholesterol and triglycerides and meat cholesterol. In addition, total unsaturated fatty acid showed improvement in both meat and egg

  11. Effects of Octacosanol Extracted from Rice Bran on the Laying Performance, Egg Quality and Blood Metabolites of Laying Hens.

    Science.gov (United States)

    Peng, Kai; Long, Lei; Wang, Yuxi; Wang, Shunxi

    2016-10-01

    A 42-d study with 384 Hy-line brown laying hens was conducted to assess the effects of dietary octacosanol supplementation on laying performance, egg quality and blood metabolites of laying hens. Hens were randomly allocated into 4 dietary groups of 8 cages each, which were fed basal diet supplemented with 0 (Control), 9 (OCT9), 18 (OCT18), and 27 (OCT27) mg/kg diet of octacosanol isolated from rice bran, respectively. The experiment was conducted in an environmental controlled house and hens were fed twice daily for ad libitum intake. Laying performance was determined over the 42-d period, and egg quality as well as blood metabolites were estimated on d 21 and d 42. Diets in OCT18 and OCT27 increased (pfeed conversion rate and levels of total cholesterol, triglyceride and low density lipoprotein cholesterol in the serum as compared to those of Control. Feed intake, yolk color, yolk diameter, eggshell thickness and high density lipoprotein cholesterol were similar (p>0.05) among treatments. Results demonstrate that supplementing 18 to 27 mg/kg diet of rice bran octacosanol can improve laying rate and egg quality and reduce blood lipid of laying hens.

  12. In-store marketing of inexpensive foods with good nutritional quality in disadvantaged neighborhoods: increased awareness, understanding, and purchasing.

    Science.gov (United States)

    Gamburzew, Axel; Darcel, Nicolas; Gazan, Rozenn; Dubois, Christophe; Maillot, Matthieu; Tomé, Daniel; Raffin, Sandrine; Darmon, Nicole

    2016-09-27

    Consumers often do not understand nutrition labels or do not perceive their usefulness. In addition, price can be a barrier to healthy food choices, especially for socio-economically disadvantaged individuals. A 6-month intervention combined shelf labeling and marketing strategies (signage, prime placement, taste testing) to draw attention to inexpensive foods with good nutritional quality in two stores located in a disadvantaged neighborhood in Marseille (France). The inexpensive foods with good nutritional quality were identified based on their nutrient profile and their price. Their contribution to customers' spending on food was assessed in the two intervention stores and in two control stores during the intervention, as well as in the year preceding the intervention (n = 6625). Exit survey (n = 259) and in-depth survey (n = 116) were used to assess customers' awareness of and perceived usefulness of the program, knowledge of nutrition, understanding of the labeling system, as well as placement-, taste- and preparation-related attractiveness of promoted products. Matched purchasing data were used to assess the contribution of promoted products to total food spending for each customer who participated in the in-depth survey. The contribution of inexpensive foods with good nutritional quality to customers' total food spending increased between 2013 and 2014 for both the control stores and the intervention stores. This increase was significantly higher in the intervention stores than in the control stores for fruits and vegetables (p = 0.001) and for starches (p = 0.011). The exit survey revealed that 31 % of customers had seen the intervention materials; this percentage increased significantly at the end of the intervention (p customers who had seen the intervention materials scored significantly higher on quizzes assessing nutrition knowledge (p < 0.001) and understanding of the labeling system (p = 0.024). A social marketing

  13. Evaluation of egg quality traits of endangered Nicobari fowl and its crosses under intensive and backyard system of Andaman and Nicobar Islands, India

    Directory of Open Access Journals (Sweden)

    N. C. Choudhuri

    2014-09-01

    Full Text Available Aim: In the present study, egg quality traits of endangered Nicobari fowl and its crosses (Nicorock and Nishibari were evaluated under intensive (deep litter as well as backyard system, in the regions of Andaman and Nicobar Islands, India. Materials and Methods: Fresh eggs (15 of all the three genetic groups of birds were collected randomly from institute farm (intensive system and from farmers’ field. The eggs were collected from adult birds (50 weeks of age 3 times with 5 in number in each time. All the genetic groups of birds were subjected to same husbandry practices. The eggs were subjected to external and internal quality parameters study. Results: The effect of genetic groups on egg weight was significant (p<0.05 for all the groups. Nicorock had significantly higher egg weight (g (56.79±0.77 in comparison to Nicobari (53.20±0.34 and Nishibari (48.98±0.22 under intensive system of management. Under backyard condition, the egg weight (g of Nicorock (48.60±1.04 was significantly higher than Nicobari but not with Nishibari. In general, the egg weight was found less under backyard system than intensive system that might be due to scavenging nature of birds. Egg length, egg width and shape index differed significantly (p<0.05 among the genetic groups. Yolk index of Nicorock was significantly (p<0.05 higher than Nishibari under intensive as well as backyard condition. The shell thickness varied significantly (p<0.05 among different genetic groups. Haugh unit of Nicorock was significantly (p<0.05 lower in comparison to Nicobari and Nishibari under intensive system, but did not vary significantly among genetic groups under backyard condition. Conclusions: The study revealed that there was a significant effect of genetic groups on different egg quality traits; both in intensive system and backyard condition.

  14. Environmental assessment of three egg production systems--Part I: Monitoring system and indoor air quality.

    Science.gov (United States)

    Zhao, Y; Shepherd, T A; Li, H; Xin, H

    2015-03-01

    To comprehensively assess conventional vs. some alternative laying-hen housing systems under U.S. production conditions, a multi-institute and multi-disciplinary project, known as the Coalition for Sustainable Egg Supply (CSES) study, was carried out at a commercial egg production farm in the Midwestern United States over two single-cycle production flocks. The housing systems studied include a conventional cage house (200,000 hen capacity), an aviary house (50,000 hen capacity), and an enriched colony house (50,000 hen capacity). As an integral part of the CSES project, continual environmental monitoring over a 27-month period described in this paper quantifies indoor gaseous and particulate matter concentrations, thermal environment, and building ventilation rate of each house. Results showed that similar indoor thermal environments in all three houses were maintained through ventilation management and environmental control. Gaseous and particulate matter concentrations of the enriched colony house were comparable with those of the conventional cage house. In comparison, the aviary house had poorer indoor air quality, especially in wintertime, resulting from the presence of floor litter (higher ammonia levels) and hens' activities (higher particulate matter levels) in it. Specifically, daily mean indoor ammonia concentrations had the 95% confidence interval values of 3.8 to 4.2 (overall mean of 4.0) ppm for the conventional cage house; 6.2 to 7.2 (overall mean of 6.7) ppm for the aviary house; and 2.7 to 3.0 (overall mean of 2.8) ppm for the enriched colony house. The 95% confidence interval (overall mean) values of daily mean indoor carbon dioxide concentrations were 1997 to 2170 (2083) ppm for the conventional cage house, 2367 to 2582 (2475) ppm for the aviary house, and 2124 to 2309 (2216) ppm for the enriched colony house. Daily mean indoor methane concentrations were similar for all three houses, with 95% confidence interval values of 11.1 to 11.9 (overall

  15. Environmental assessment of three egg production systems–Part I: Monitoring system and indoor air quality

    Science.gov (United States)

    Zhao, Y.; Shepherd, T. A.; Li, H.; Xin, H.

    2015-01-01

    To comprehensively assess conventional vs. some alternative laying-hen housing systems under U.S. production conditions, a multi-institute and multi-disciplinary project, known as the Coalition for Sustainable Egg Supply (CSES) study, was carried out at a commercial egg production farm in the Midwestern United States over two single-cycle production flocks. The housing systems studied include a conventional cage house (200,000 hen capacity), an aviary house (50,000 hen capacity), and an enriched colony house (50,000 hen capacity). As an integral part of the CSES project, continual environmental monitoring over a 27-month period described in this paper quantifies indoor gaseous and particulate matter concentrations, thermal environment, and building ventilation rate of each house. Results showed that similar indoor thermal environments in all three houses were maintained through ventilation management and environmental control. Gaseous and particulate matter concentrations of the enriched colony house were comparable with those of the conventional cage house. In comparison, the aviary house had poorer indoor air quality, especially in wintertime, resulting from the presence of floor litter (higher ammonia levels) and hens’ activities (higher particulate matter levels) in it. Specifically, daily mean indoor ammonia concentrations had the 95% confidence interval values of 3.8 to 4.2 (overall mean of 4.0) ppm for the conventional cage house; 6.2 to 7.2 (overall mean of 6.7) ppm for the aviary house; and 2.7 to 3.0 (overall mean of 2.8) ppm for the enriched colony house. The 95% confidence interval (overall mean) values of daily mean indoor carbon dioxide concentrations were 1997 to 2170 (2083) ppm for the conventional cage house, 2367 to 2582 (2475) ppm for the aviary house, and 2124 to 2309 (2216) ppm for the enriched colony house. Daily mean indoor methane concentrations were similar for all three houses, with 95% confidence interval values of 11.1 to 11.9 (overall

  16. Effect of different levels of methionine, protein and tallow on the productive performance and egg quality of laying hens in the late-phase production

    Directory of Open Access Journals (Sweden)

    H Nassiri Moghaddam

    2012-06-01

    Full Text Available An experiment was conducted to determine the effects of different levels of methionine, protein and tallow on productive performance and egg quality of laying hens in the late phase of production. A completely randomized design with a 3×2×2 factorial arrangement, with three levels (0.34, 0.31, and 0.27% of methionine (MET, two levels (12.8 and 14.7% of protein (PRO and two levels (1 and 3% of tallow (TAL with constant level of linoleic acid (1.55 ± 0.02%, was used. A number of 144 Hi-Line W-36 layers from 70 to 76 wk of age was randomly distributed into 12 treatment groups with 4 replicates of 3 hens each. Egg production and egg weight were daily recorded and feed intake and egg quality traits were recorded every 2 wk. There was a significant interaction between PRO levels and TAL for egg weight. Low levels of TAL and PRO decreased egg weight throughout the experiment. High levels of MET and TAL with concomitant reduced PRO, increased eggshell thickness, and a significant interaction between levels of MET, PRO and TAL was observed during the experiment (70 to 76 wk. Low level of protein (12.8% significantly decreased albumen weight in the third 2-wk period. Yolk color increased when hens were fed low levels of PRO and TAL. Results of this experiment indicated that the simultaneous reduction of dietary PRO and MET in diets of Hi-Line W-36 laying hens in the late phase of production, reduced egg weight (P<0.05. Productive performance and egg quality were not affected by 12 and 20% reduction of PRO and MET, respectively. It seems that decreasing the levels of MET and PRO to lower than the recommended values can decrease egg weight without negative effects on productive performance and egg quality of laying hens in the late phase of production.

  17. INFLUENCE OF TRIBULUS TERRESTRIS EXTRACT SUPPLEMENTATION ON LAYING PRODUCTIVITY AND EGGS QUALITY IN JAPANESE QUAILS

    Directory of Open Access Journals (Sweden)

    Martina Nickolova

    2011-01-01

    Full Text Available The aim of the current work was to examine the influence of Bulgarian phytoproduct VemoHerb T (dry extract of Tribulus terrestris –TT on laying productivity of Japanese quails (Coturnix coturnix japonica and their egg morphological and sensor properties. A trial was organized with 52 female and 16 male Japanese quails from the breed Faraon at the age of 44 days randomly divided in four groups – control and three experimental groups, 13 female and 4 male each. All birds were fed ad libitum the same compound feed for Japanese quails. The trial lasted 10 weeks. The experimental groups received with the drink water the tested product in following daily doses: 4mg/kg body weight (10weeks; 10mg/kg body weight (the first 5 weeks of the trial; 10mg/kg body weight (10 weeks for Ist, IInd , IIInd experimental groups respectively. The addition of TT-extract improved significantly the laying productivity. It was found significant higher values of egg weight, albumen - and yolk weight in quails from IInd and IIIrd experimental groups. There was a tendency to increase the egg shell weight and egg shell thickness in all treated groups in comparison to the control group. The usе of VemoHerb T did not aggravate the sensor properties of the quails’ eggs.

  18. Effect of using garlic or curcumin or parsley on the growth performance, meat and egg quality of Japanese quail

    International Nuclear Information System (INIS)

    El-Faramawy, A.A.; Fahmy, M.O.; Wakwak, M.M.

    2006-01-01

    Two grams of powdered garlic or curcumin or parsley were added separately to each kg of the diet of unsexed Japanese quail aged one day old in an attempt to evaluate growth performance, serum cholesterol, triiodothyronine hormone, small intestine thickness and caecal microbial count to improve meat quality and egg production. The quails were hold in equal 4 groups; each group contained three replicates of 30 birds. Birds were watered and fed ad libitum for 7 weeks then 69 chicks from each group (6 males and 17 females for each replicate) were transferred into laying cages for another 6 weeks while 3 birds from each replicate were slaughtered for serum cholesterol, triiodothyronine, small intestine thickness, microbial count and carcass fatty acid determination. The data revealed that addition of each of the tested herb supplements caused significant increase in body weight, while there was non-significant changes in serum cholesterol, T3, small intestine thickness and total bacterial count. In addition, there was significant increase in unsaturated fatty acids and significant decrease in saturated fatty acids of carcass. The three additives caused remarkable increases in egg production and hatch ability %, besides augmenting the fertility % and number of ovarian follicles. It may be concluded that addition of 2g garlic or curcumin or parsley powder to each kg of the diet of Japanese quail favored consumer expectation in relation to meat quality and egg production and prolonged feed preservation

  19. Interaction between maturity stages and temperature on quality of ‘Guarani’ blackberries stored under controlled atmosphere

    Directory of Open Access Journals (Sweden)

    Auri Brackmann

    Full Text Available ABSTRACT: The aim of this research was to evaluate the interaction between maturity stages and temperature on fruit quality of ‘Guarani’ blackberries stored under controlled atmosphere (CA. The experiment was conducted in a factorial scheme (2x2, evaluating two ripening stages (E1: red-color and E2: black-color of fruits and two temperatures (1°C and 5°C. The fruit were stored in CA (10.0kPa O2+15.0kPa CO2 and 98±1% of relative humidity (RH. Results showed that the principal component 1 (PC I and principal component 2 (PC II corresponded to 92.84% of the overall variation of the evaluated variables. Harvest should not be performed in the early maturity stage, because ‘Guarani’ blackberries do not develop all quality of consumer. ‘Guarani’ blackberries must be stored at 1°C. The maturity stage showed the major importance in the overall variability of quality parameters when compared to storage temperature.

  20. Effects of essential oils on performance, egg quality, nutrient digestibility and yolk fatty acid profile in laying hens

    Directory of Open Access Journals (Sweden)

    Xuemei Ding

    2017-06-01

    Full Text Available The study was conducted to investigate the effect of essential oils on performance, egg quality, nutrient digestibility and yolk fatty acid profile in laying hens. A total of 960 Lohmann laying hens aged 53 weeks were enrolled, under 4 different treatment diets supplemented with 0, 50, 100 and 150 mg/kg essential oils (Enviva EO, Dupont Nutrition Biosciences ApS, Denmark, respectively. Each treatment was replicated 8 times with 30 birds each. Birds were fed dietary treatment diets for 12 weeks (54 to 65 weeks. For data recording and analysis, a 12-week period was divided into 3 periods of 4 weeks' duration each: period 1 (54 to 57 weeks, period 2 (58 to 61 weeks, and period 3 (62 to 65 weeks. For the diet supplemented with Enviva EO, hen-day egg production and the feed conversion ratio (FCR were significantly improved (P < 0.05 at weeks 58 to 61, and the eggshell thickness was significantly increased (P < 0.05 at week 65. However, egg production, egg weight, feed intake, FCR and other egg quality parameters (albumen height, Haugh unit, egg yolk color and eggshell strength were not affected by the dietary treatment. In addition, compared with the control diet, protein digestibility in the 100 mg/kg Enviva EO treatment group was significantly increased (P < 0.05, and fat digestibility in the 100 and 150 mg/kg Enviva EO treatment groups was significantly decreased (P < 0.05, but Enviva EO had no effect on energy apparent digestibility. Saturated fatty acid (SFA and monounsaturated fatty acid (MUFA gradually decreased and polyunsaturated fatty acid (PUFA increased with Enviva EO supplementation, but the difference was not significant. The data suggested that the supplementation of essential oils (Enviva EO in laying hen diet did not show a significant positive effect on performance and yolk fatty acid composition but it tended to increase eggshell thickness and protein digestibility, especially at the dose of 50 mg/kg.

  1. Assessing the role of food quality in the production and hatching of Temora longicornis eggs

    DEFF Research Database (Denmark)

    Jonasdottir, Sigrun; Visser, Andre; Jespersen, C.

    2009-01-01

    We utilized the varying fatty acid composition of phytoplankton to create 19 different food treatments based on different ratios of 5 potentially important fatty acids and offered these to the copepod Temora longicornis. Egg production and hatching was monitored and related to ingested carbon......, dietary fatty acids and the utilization of maternal fatty acid reserves. Egg production rates depended on ingested carbon and the fatty acid 20:5n-3 from the diet and from the female reserves. Hatching success showed a significant dependence on the ingested and maternal fatty acids 22:6n-3, 18:5n-3 and 18......:3n-3. Production of nauplii as a combination of egg production and hatching was highly dependent on the fatty acid 22:6n-3 and carbon ingestion. The study confirms the importance of n-3 polyunsaturated fatty acids for copepod reproduction and indicates that the female differentially utilizes its...

  2. Influence of low dose irradiation on the quality of fresh buffalo meat stored at 0-3 degrees C

    International Nuclear Information System (INIS)

    Naik, G.N.; Pushpa Paul; Chawla, S.P.; Sherikar, A.T.; Nair, P.M.

    1994-01-01

    The effect of low dose irradiation on the microbiological, chemical and sensory qualities of fresh buffalo meat stored at 0-3-degrees-C was studied. Meat slices packed in polyethylene bags subjected to 2.5 kGydose had a shelf-life of 4 weeks with acceptable sensory score, low total volatile basic nitrogen values and remarkable improvement in microbiological quality. Irradiated meat was completely free of Pseudomonas spp. and Enterobacteriaceae throughout storage. In contrast, the unirradiated control meat spoiled within 2 weeks

  3. Fermented feed for laying hens: effect on egg production, egg quality, plumage condition and composition and activity of the intestinal microflora

    DEFF Research Database (Denmark)

    Engberg, Ricarda M; Hammershøj, M; Johansen, N F

    2009-01-01

    1. An experiment with a total of 480 hens (Babcock) was carried out from 16 to 38 weeks of age to evaluate the suitability of wet fermented feed (feed water ratio, 1:1·2-1:1·4) for layers, taking aspects of nutrition and gastrointestinal health into consideration. The production performance, egg...... mash. Presumably because of an extended adaptation time to the feed, the onset of lay occurred later when hens were fed on fermented feed, resulting in non-significantly reduced total egg production (75 vs. 82%). 5. There was no significant difference between groups with respect to the total egg mass...... with the dry mash (g feed DM/g egg mass, 2·28 vs. 2·53). 6. The use of fermented feed increased egg weight in the period from 34 to 37 weeks (61·4 vs. 60·0) and increased shell weight (g/100 g egg weight, 10·2 vs. 9·9) and shell stiffness (N/mm, 161 vs. 150) of eggs collected at 37 weeks. 7. The feeding...

  4. Public health investigations of Salmonella Enteritidis in catering raw shell eggs, 2002-2004.

    Science.gov (United States)

    Little, C L; Surman-Lee, S; Greenwood, M; Bolton, F J; Elson, R; Mitchell, R T; Nichols, G N; Sagoo, S K; Threlfall, E J; Ward, L R; Gillespie, I A; O'Brien, S

    2007-06-01

    In response to a dramatic change in the epidemiology of Salmonella Enteritidis in England and Wales thought to be associated with raw shell eggs, the Health Protection Agency initiated public health investigations to establish the incidence of Salmonella contamination and origin of eggs used by catering premises implicated in outbreaks of Salm. Enteritidis. Between October 2002 and November 2004, 16 971 eggs were sampled and Salmonella were recovered from 3.4%. Salmonella was isolated from 5.5% and 6.3% of Spanish and eggs of unknown origin, respectively, used in catering premises linked to outbreaks, a level significantly higher than that (1.1%) found in nonLion Quality UK eggs sampled. The small sample of UK Lion Quality eggs tested (reflecting their lack of use in premises visited) did not contain Salmonella. Several phage types of Salm. Enteritidis other than phage type 4 (PT 4) were identified with nonUK eggs. Eggs from Spain were implicated as a major source of infection. Eggs were contaminated more frequently with Salmonella when shells were dirty and/or cracked, and stored at above 8 degrees C. The use of Spanish eggs by the catering sector has been identified as a consistent significant factor in many of the outbreaks caused by Salm. Enteritidis nonPT4 in England and Wales during 2002-2004. Advice to caterers and hospitals that raw shell eggs should not be used in food that will either not be cooked or only lightly cooked should be reinforced.

  5. Effect of Supplementation Purslane (Portulaca oleracea as a Source of Alpha-Linolenic Acid on Production Performance and Physical Quality of Egg of Laying Hens

    Directory of Open Access Journals (Sweden)

    Lilik Kartikasari

    2015-09-01

    Full Text Available The aim of the study was to evaluate the effects of inclusion plant source of n 3 fat in the form of alpha-linolenic acid (ALA, 18:3n-3 on the diets of layers on production performance and physical quality of eggs. A total of  125 Hy-Line Brown hens (38 weeks old were placed at individual cages and assigned to five dietary treatments. The dietary treatments were supplemented with 0, 1.5, 3.0, 4.5 and 6.0% purslane meal. Laying hens were fed for five weeks following a seven day adaptation period. Water and feed were provided ad libitum. Feed intake (FI measured weekly and feed consumption ratio (FCR was calculated at the end of the trial. A total of 25 egg yolk samples of day 35 (n = 5 egg yolks for each treatment were collected to analyse physical quality of eggs. The data were analyzed using Analysis of Variance (ANOVA. Differences between treatment means were further analyzed using Duncan's New Multiple Range Test (DMRT. Results showed that the incorporation of plants rich in ALA did not modify FI, FCR, and egg production. Supplementation of purslane meal in the diets had no effect on physical quality of eggs, including egg weight, yolk weight, albumen index, yolk index and Haugh Unit (HU. The average of egg weight and yolk weight were 60,5 and 15.3 g, respectively. Diet containing purslane meal increased yolk colour. In conclusion, laying hens that fed diet supplemented with purslane meal rich in ALA improved yolk colour and did not change the production performance of the laying hens or the qualities of the eggs.

  6. Effects of Enzyme Supplementation on Productive Performance and Egg Quality of Laying Hens fed Diets Containing Graded Levels of Whole Date Waste

    Directory of Open Access Journals (Sweden)

    Torki M

    2014-12-01

    Full Text Available The objective of present study was to determine the effects of β-mannanase-based enzyme (Hemicell® on productive performance and egg quality in diets containing graded levels of Whole date waste (WDW fed to laying hens. A total of 336 Hy-line leghorn hens after production peak were randomly divided into 56 cages. Eight iso-energetic and iso-nitrogenous experimental diets in a 4 × 2 factorial arrangement including four levels of WDW (0, 10, 20 and 30% and 2 concentrations of supplemental β-mannanase (0 or 0.06 % were prepared. Each dietary treatment was fed to 7 cages (6 birds/cage from 32 to 38 wk of age. During the experiment, daily egg production, egg weight and feed intake were measured. At the 6th wk, egg quality traits were also recorded. The results showed that there was no interaction between WDW inclusion and enzyme supplementation on performance and egg traits. Dietary supplementation of WDW more than 10% significantly decreased egg production and egg mass compared to no WDW recipient hens (control diet during the entire experiment (P. Inclusion of 30% WDW to the diet, significantly increased overall feed conversion ratio compared to the control group (P. The treatment with 20 and 30% WDW also resulted in lower eggshell thickness as compared to 10% WDW (P. The dietary inclusion of 10% WDW also increased yolk index as compared to the control and 30% WDW groups (P. Enzyme supplementation had no significant effect on productive performance as well as egg quality characteristics. Based on the results of this experiment, it can be concluded that WDW could be included to laying hens diets up to 10% with no deleterious effects on performance and egg quality characteristics.

  7. Female nutrition and assisted reproduction in European eel: influences on oogenesis and egg quality

    DEFF Research Database (Denmark)

    da Silva, Filipa

    of egg production involves a long-term hormonal treatment of salmon or carp pituitary extracts (SPE or CPE) followed by the induction of oocyte maturation and ovulation which includes a SPE primer and a maturation-inducing hormone (MIH), generally 17α, 20β-dihydroxy-4-pregnen-3-one (DHP). Recent progress...

  8. Conspecific brood parasitism and egg quality in blue tits Cyanistes caeruleus

    NARCIS (Netherlands)

    Vedder, Oscar; Kingma, Sjouke-Anne; Engelhardt, Nikolaus von; Korsten, Peter; Groothuis, Ton G.G.; Komdeur, Jan

    Laying eggs in nests of unrelated conspecific pairs to parasitize their parental care is a common phenomenon in birds. In blue tits Cyanistes caeruleus such conspecific brood parasitism (CBP) has never been reported in the literature. However, in a situation where breeding density was extremely

  9. Egg Speckling Patterns Do Not Advertise Offspring Quality or Influence Male Provisioning in Great Tits

    NARCIS (Netherlands)

    Stoddard, M.C.; Fayet, A.; Kilner, R.M.; Hinde, C.A.

    2012-01-01

    Many passerine birds lay white eggs with reddish brown speckles produced by protoporphyrin pigment. However, the function of these spots is contested. Recently, the sexually selected eggshell coloration (SSEC) hypothesis proposed that eggshell color is a sexually selected signal through which a

  10. EGG: Empirical Galaxy Generator

    Science.gov (United States)

    Schreiber, C.; Elbaz, D.; Pannella, M.; Merlin, E.; Castellano, M.; Fontana, A.; Bourne, N.; Boutsia, K.; Cullen, F.; Dunlop, J.; Ferguson, H. C.; Michałowski, M. J.; Okumura, K.; Santini, P.; Shu, X. W.; Wang, T.; White, C.

    2018-04-01

    The Empirical Galaxy Generator (EGG) generates fake galaxy catalogs and images with realistic positions, morphologies and fluxes from the far-ultraviolet to the far-infrared. The catalogs are generated by egg-gencat and stored in binary FITS tables (column oriented). Another program, egg-2skymaker, is used to convert the generated catalog into ASCII tables suitable for ingestion by SkyMaker (ascl:1010.066) to produce realistic high resolution images (e.g., Hubble-like), while egg-gennoise and egg-genmap can be used to generate the low resolution images (e.g., Herschel-like). These tools can be used to test source extraction codes, or to evaluate the reliability of any map-based science (stacking, dropout identification, etc.).

  11. Impact of supplementing diets with propolis on productive performance, egg quality traits and some haematological variables of laying hens.

    Science.gov (United States)

    Abdel-Kareem, A A A; El-Sheikh, T M

    2017-06-01

    One hundred and twenty eight, 28-weeks-old Lohmann LSL hybrid layers were used in this experiment, which lasted 12 weeks to investigate the effect of propolis supplementation on the productive performance, egg quality traits and haematological variables of laying hens. All hens were randomly classified into four equal experimental groups, eight replicates (4 birds/each). Hens in group 1 were fed on a commercial diet and considered as control group, while those in groups 2, 3 and 4 were fed on the same commercial diet and supplemented with 250, 500 and 1000 mg propolis/kg diet. The obtained results revealed that daily feed consumption/hen increased insignificantly with increasing propolis level than that of the control group. Regarding the means of egg mass and egg production rate, it was observed that the laying hens fed diets containing 250 and 1000 mg propolis/kg significantly (p hens as compared to those in the control. Concerning the haematological parameters, the results showed that the levels of total protein and globulin increased significantly with increasing propolis level, while cholesterol and liver enzymes were significantly decreased (p hens in the treated groups significantly decreased, whereas the lymphocyte count significantly increased, resulting in a decreased H/L ratio than that of the control group. Thus, it could be concluded that the supplementation of 250 mg propolis/kg diet is highly recommended to improving egg production, blood constituent and haematological parameters of the commercial laying hens. Journal of Animal Physiology and Animal Nutrition © 2015 Blackwell Verlag GmbH.

  12. Effect of group size on performance and egg quality of laying hens during 20 to 36 weeks of age

    Directory of Open Access Journals (Sweden)

    Fulvia Bovera

    2014-03-01

    Full Text Available The aim of this study was to improve knowledge on the effect of group size on productive performance and egg quality of hens raised in furnished cages equally designed. A total of 520, 15-week-old Lohmann Brown laying hens were divided into 2 groups to have a similar initial body weight (average 1392±16.3 g. The cages of S25 group (240 L x 78 W x 50 H cm, 749 cm2/hen hosted a total of 200 hens, while those of S40 group (462 L x 65 W x 50 H, 751 cm2/hen included 320 birds. Experimental data were recorded after an adaptation period of 5 weeks (20 to 36 weeks of age. Hens were submitted to 15 h of light/d. The average temperature inside the building was 24.6±2.5°C over the entire experimental period with higher values at 24, 26, 28 and 30 weeks of age. The relative humidity recorded inside the building was 55% at week 20 and 60% all through the experimental period. Hens raised from S40 group had lower percentage of egg production (84.91 vs 88.90%, P<0.01 and higher feed conversion ratio (2.70 vs 2.25, P<0.0001 than S25 group. The percentage of eggs laid out of the nest was higher in S25 than S40 group (0.26 vs 0.19%, P<0.01. As expected, the week of age affected almost all the parameters (feed intake, body weight, laying percentage, egg weight, yolk, shell and albumen indexes, shell thickness, Haugh unit. However, the effect of group size was particularly evident during the hot period.

  13. Egg quality and blood parameters of “Bianca di Saluzzo” and Isa Brown hens kept under free range conditions

    Directory of Open Access Journals (Sweden)

    Luca Doglione

    2010-01-01

    Full Text Available Egg quality traits and some blood parameters of Bianca di Saluzzo hen (BSh were compared to Isa Brown hen (IBh. Birds were reared in free range conditions. Weightofthewholeegg Weight of the whole egg was higher (P≤0.01 for IBh, due to its higher amount of albumen (P≤0.01 whereas BSh egg showed the highest weight and relative percentage of yolk (PP≤0.01. IBh and BSh egg chemical composition was similar.Totalredcellsdidnotshowstatisticaldifferencesbetweengroups,whiletotalleucocytes Total red cells did not show statistical differences between groups, while total leucocytes were lower (P≤0.05 forBShhens. Heterophyl/Lymphocyte(H/L ratioof BShwaslower (P for BSh hens. Heterophyl/Lymphocyte(H/L ratioof BShwaslower (P . Heterophyl/Lymphocyte(H/L ratioof BShwaslower (P Heterophyl/Lymphocyte (H/L ratio of BSh was lower (P (PP≤0.01 than IBh(0.33 IBh (0.33 (0.33 vs. 0.82.IBh 0.82. IBh IBh α-1 acid glycoprotein (AGPmeanconcentrationswereaffectedbytime: (AGP mean concentrations were affected by time: the values registered after 15 d (T1 and 2 months (T2 of observation were similar (345±132 and 279±58 μg/mlrespectively,whileAGPvalueregisteredafter4months(T3weresignificantlyhigher μg/ml respectively,whileAGPvalueregisteredafter4months(T3weresignificantlyhigher , while AGP value registered after 4 months (T3 were significantly higher (700±487 μg/ml;BShdidnotdisplayanyAGPstatisticalvariationovertime.IBhalbuminmeancon- μg/ml; BShdidnotdisplayanyAGPstatisticalvariationovertime.IBhalbuminmeancon- BSh did not display any AGP statistical variation over time. IBh albumin mean con- centration (1.62 g/dL was statistically lower than BSh values (1.89 g/dL; in both groups no effect of time of sampling was recorded. Acutephaseprotein(APPvaluesofBShsuggestedamoreadaptive Acute phase protein (APPvaluesofBShsuggestedamoreadaptive (APP values of BSh suggested a more adaptive attitude to free range conditions and appeared more constant over time. The present

  14. Effect of Feeding and Withdrawal of Vanadium and Vitamin C on Egg Quality and Vanadium Residual Over Time in Laying Hens.

    Science.gov (United States)

    Wang, J P; He, K R; Ding, X M; Bai, S P; Zeng, Q F; Zhang, K Y

    2017-06-01

    This experiment examined the egg quality of hens fed vanadium (V) and vitamin C (VC) during storage, as well as the V and VC withdrawal on egg quality and V residual in egg. A total of 360 laying hens (31 weeks old) were randomly allotted into a 3 × 2 factorial arrangement treatments (6 replicates and 10 chicks per replicate) with three levels of dietary V (0, 5, and 10 mg/kg) and two levels of VC (0 and 100 mg/kg) for 19 weeks (feeding V and VC 12 weeks, recovery 7 weeks). The V residual in eggs at 4, 8, and 12th weeks were increased (linear effect, P ≤ 0.01) as V levels increased and was not detected in albumen at 7th week after V withdrawal. Followed by 12-week feeding period, albumen height and Haugh unit of eggs during 2-week storage were decreased (linear and quadratic effect, P effect, P effect, P effect, P effect on albumen height and HU continued to be observed until the seventh week, whereas the bleaching effect on eggshell color disappeared after 1-week withdrawal. The results indicated that feeding 5 or 10 mg/kg V increases egg V residual and reduces egg albumen quality and bleached the shell color, and the impaired albumen quality induced by 10 mg/kg of V lasted at least 6 weeks after changing to no V supplementation diet. The addition of VC did not show to affect egg quality during storage or recovery phase.

  15. Total lipid in the broodstock diet did not affect fatty acid composition and quality of eggs of sea bass (Dicentrarchus labrax L.

    Directory of Open Access Journals (Sweden)

    José Mª Navas

    2001-03-01

    Full Text Available To determine whether an increase in the quantity of lipids ingested by sea bass (Dicentrarchus labrax broodstock could improve egg quality, three year-old sea bass were fed three different diets: a natural diet (Control group, and two artificial diets containing 10% or 17% of total lipids. In two consecutive reproductive seasons, the spawning results, the lipid classes and the fatty acid composition of the eggs were studied. No differences in the absolute content of lipids or in the percentage of different lipid classes were observed between the eggs from the three groups. Both experimental groups fed with the artificial diets produced eggs of poor quality, with low percentages of buoyancy and hatching. Those observed in the eggs from the Control Group were significantly higher (p> 0.01 than those of the experimental groups. The higher hatching rate of the eggs from the Control Group was associated with higher DHA:EPA and AA:EPA ratios. The data obtained showed that the fatty acid composition of the eggs was affected by the fatty acid composition of the diets but not by the total quantity of lipids administered to the broodstock.

  16. Gamma irradiation, hot water and imazalil treatments on decay organisms and physical quality of stored netted muskmelon fruit

    International Nuclear Information System (INIS)

    Lester, G.

    1989-01-01

    Nonchemical treatments of gamma irradiation (2 Kilograys) and hot water (57°C) and the fungicide imazalil (1000 ppm) were compared with and without shrink-film wrap for effects on decay and physical quality of netted muskmelon fruit stored at 4°C for 0 through 60 days. Gamma irradiation was ineffective in controlling decay and surface molds, and injurious to physical quality by decreasing firmness, increasing fresh weight loss, membrane leakage and vein track browning. Hot water treatment coupled with shrink-film wrap was effective in controlling decay activity and maintaining physical quality up to 20 days storage. Imazalil coupled with shrink-film wrap controlled the incidence and severity of decay and maintained fruit firmness, moisture loss, membrane permeability and vein track browning for almost 60 days storage. (author)

  17. Effects of a proposed quality improvement process in the proportion of the reported ultrasound findings unsupported by stored images.

    Science.gov (United States)

    Schenone, Mauro; Ziebarth, Sarah; Duncan, Jose; Stokes, Lea; Hernandez, Angela

    2018-02-05

    To investigate the proportion of documented ultrasound findings that were unsupported by stored ultrasound images in the obstetric ultrasound unit, before and after the implementation of a quality improvement process consisting of a checklist and feedback. A quality improvement process was created involving utilization of a checklist and feedback from physician to sonographer. The feedback was based on findings of the physician's review of the report and images using a check list. To assess the impact of this process, two groups were compared. Group 1 consisted of 58 ultrasound reports created prior to initiation of the process. Group 2 included 65 ultrasound reports created after process implementation. Each chart was reviewed by a physician and a sonographer. Findings considered unsupported by stored images by both reviewers were used for analysis, and the proportion of unsupported findings was compared between the two groups. Results are expressed as mean ± standard error. A p value of improvement process implementation. Thus, we present a simple yet effective quality improvement process to reduce unsupported ultrasound findings.

  18. EFFECT OF THYME ESSENTIAL OIL ADDITION ON PHYSICAL AND MICROBIOLOGICAL QUALITY OF TABLE EGGS

    Directory of Open Access Journals (Sweden)

    Henrieta Arpášová

    2013-02-01

    Full Text Available Essentialoils areintensivefragrant, oilyliquidsubstances containedindifferent parts of theplant. Their function is based on organoleptic effect and stimulation of organism to the production of digestive juices. Result is ahigherdigestibilityandabsorption of nutirents. Besides antibacterial properties, essential oils or their components have been shown to exhibit antiviral,antimycotic, antitoxigenic, antiparasitic, and insecticidal properties. In this experiment the effects of supplementation of the diet for laying hens with thyme essential oils on physical and microbiological egg parameters were studied.Hens of laying hybrid Hy-Line Brown (n=30 were randomly divided into 3 groups (n=10 and fed for 23 weeks on diets with thyme essential oil supplemented. In the first experimental group the feed mixture was supplemented with thyme essential oil addition in a dose 0.5 g/kg, in the second one some essential oil in a dose 1g/kg. The results suggest that all of qualitative parameters of egg internal content (yolk weight (g, yolk index, percentage portion egg yolk (%, yolk index, yolk colour (°HLR, albumen weight (g, percentage portion of albumen (%, Haugh Units (HU, albumen index were with thyme essential oil addition insignificantly influenced (P>0.05. The number of coliforms, enterococci, fungi and yeasts decreased with increasing dose of oil. The number of lactobacilli was zero in all groups.

  19. Effects of Xylem-Sap Composition on Glassy-Winged Sharpshooter (Hemiptera: Cicadellidae) Egg Maturation on High- and Low-Quality Host Plants.

    Science.gov (United States)

    Sisterson, Mark S; Wallis, Christopher M; Stenger, Drake C

    2017-04-01

    Glassy-winged sharpshooters must feed as adults to produce mature eggs. Cowpea and sunflower are both readily accepted by the glassy-winged sharpshooter for feeding, but egg production on sunflower was reported to be lower than egg production on cowpea. To better understand the role of adult diet in egg production, effects of xylem-sap chemistry on glassy-winged sharpshooter egg maturation was compared for females confined to cowpea and sunflower. Females confined to cowpea consumed more xylem-sap than females held on sunflower. In response, females held on cowpea produced more eggs, had heavier bodies, and greater lipid content than females held on sunflower. Analysis of cowpea and sunflower xylem-sap found that 17 of 19 amino acids were more concentrated in cowpea xylem-sap than in sunflower xylem-sap. Thus, decreased consumption of sunflower xylem-sap was likely owing to perceived lower quality, with decreased egg production owing to a combination of decreased feeding and lower return per unit volume of xylem-sap consumed. Examination of pairwise correlation coefficients among amino acids indicated that concentrations of several amino acids within a plant species were correlated. Principal component analyses identified latent variables describing amino acid composition of xylem-sap. For females held on cowpea, egg maturation was affected by test date, volume of excreta produced, and principal components describing amino acid composition of xylem-sap. Principal component analyses aided in identifying amino acids that were positively or negatively associated with egg production, although determining causality with respect to key nutritional requirements for glassy-winged sharpshooter egg production will require additional testing. Published by Oxford University Press on behalf of Entomological Society of America 2017. This work is written by US Government employees and is in the public domain in the US.

  20. PHYSIOLOGICAL AND SANITARY QUALITY OF DESICCATED AND STORED AZUKI BEAN SEEDS

    Directory of Open Access Journals (Sweden)

    CÁSSIO JARDIM TAVARES

    2016-01-01

    Full Text Available The objective of this research was to evaluate the effects of using different herbicides as desiccants in pre - harvest and the effects of storage on the physiological and sanitary quality of azuki bean seeds ( Vigna angularis Willd. The experiment was arranged in a randomized complete block design in a split plot scheme, with four replications. Four herbicides were tested: paraquat (400 g a.i. ha - 1 , glufosinate ammonium (400 g a.i. ha - 1 , glyphosate (720 g a.i. ha - 1 , flumioxazin (30 g a.i. ha - 1 and a control without herbicide application. In the subplots seed quality was tested in two evaluation periods: at harvest and six months after harvest. Desiccant was applied when the azuki beans were physiologically mature. We assessed the physiological and sanitary quality of the seeds using a vigour and seed health test. The use of glyphosate resulted in a higher incidence of abnormal seedlings and reduced size and weight of the seedlings. With paraquat and flumioxazin the physiological quality was maintained and there was reduced pathogen infestation in the seeds six months after harvest. Storage affected the physiological quality of the azuki bean seeds.

  1. DNA quality and quantity from up to 16 years old post-mortem blood stored on FTA cards.

    Science.gov (United States)

    Rahikainen, Anna-Liina; Palo, Jukka U; de Leeuw, Wiljo; Budowle, Bruce; Sajantila, Antti

    2016-04-01

    Blood samples preserved on FTA cards offer unique opportunities for genetic research. DNA recovered from these cards should be stable for long periods of time. However, it is not well established as how well the DNA stored on FTA card for substantial time periods meets the demands of forensic or genomic DNA analyses and especially so for from post-mortem (PM) samples in which the quality can vary upon initial collection. The aim of this study was to evaluate the time-dependent degradation on DNA quality and quantity extracted from up to 16 years old post-mortem bloodstained FTA cards. Four random FTA samples from eight time points spanning 1998 to 2013 (n=32) were collected and extracted in triplicate. The quantity and quality of the extracted DNA samples were determined with Quantifiler(®) Human Plus (HP) Quantification kit. Internal sample and sample-to-sample variation were evaluated by comparing recovered DNA yields. The DNA from the triplicate samplings were subsequently combined and normalized for further analysis. The practical effect of degradation on DNA quality was evaluated from normalized samples both with forensic and pharmacogenetic target markers. Our results suggest that (1) a PM change, e.g. blood clotting prior to sampling, affects the recovered DNA yield, creating both internal and sample-to-sample variation; (2) a negative correlation between the FTA card storage time and DNA quantity (r=-0.836 at the 0.01 level) was observed; (3) a positive correlation (r=0.738 at the level 0.01) was found between FTA card storage time and degradation levels. However, no inhibition was observed with the method used. The effect of degradation was manifested clearly with functional applications. Although complete STR-profiles were obtained for all samples, there was evidence of degradation manifested as decreased peak heights in the larger-sized amplicons. Lower amplification success was notable with the large 5.1 kb CYP2D6 gene fragment which strongly supports

  2. Essential oil optimizes the susceptibility of Callosobruchus maculatus and enhances the nutritional qualities of stored cowpea Vigna unguiculata.

    Science.gov (United States)

    Akami, Mazarin; Chakira, Hamada; Andongma, Awawing A; Khaeso, Kanjana; Gbaye, Olajire A; Nicolas, Njintang Y; Nukenine, E-N; Niu, Chang-Ying

    2017-08-01

    The intensive use of synthetic pesticides in cowpea storage has led to the development of resistance by Callosobruchus maculatus and subsequent degradation of grain quality. In an attempt to circumvent these constraints, the susceptibility of C. maculatus to 2,2-dichlorovinyldimethyl phosphate (DDVP) and Lippia adoensis essential oil (EO) was investigated and variations in the proportions of nutritional values of treated grains 150 days after storage were assessed. The survival rate was recorded after five generations. The resistance index and biochemical parameters of grains were determined. The results from this study revealed that the survival rate and resistance index significantly increased proportionally with damage in DDVP treatments ( r  = 0.889; p  = 0.018) while in EO treatments, those values remained low without significant variations ( p  = 0.0764) throughout the generations. DDVP stored grains yielded higher crude protein values, but lower carbohydrates, tannins, phenolics and minerals compared to EO. Eighteen amino acids were detected in EO treated grains and 14 in DDVP which was devoid of albumin and prolamin. Lippia adoensis EO could therefore represent a safe alternative bio-pesticide to cope with insect resistance and enhance the nutritional qualities of stored cowpea seeds.

  3. INFLUENCE OF SOME ANTIMICROBIAL FOOD ADDITIVES AND GAMMA IRRADIATION ON THE FUNGAL STATUS AND ORGANOLEPTIC QUALITY OF LOCAL STORED CHEESE

    International Nuclear Information System (INIS)

    MATTAR, Z.A.

    2008-01-01

    The present investigation was carried out to study the effectiveness of some antimicrobial food additives on the microbial status and organoleptic quality of local cheese stored at 25 0 C for six weeks. Aspergillus flavus, Penicillium citrinum and Aspergillus niger were the predominant genera isolated from cheese samples. Treatment with propionic acid (600 and 1000 ppm), potassium sorbate (2000 and 3000 ppm) and sodium chloride (4 and 8%) decrease significantly the total fungal count of cheese less than 106/g over 4 weeks of storage at 25 0 C. Gamma irradiation with 3 kGy completely inhibited the growth of mycelia and no mycotoxins were detected. Treatment cheese with propionic acid (1000 ppm), potassium sorbate (3000 ppm) and sodium chloride (8%) developed no detectable spoilage odour during 3 weeks of storage at 25 0 C whereas untreated cheese was spoiled between one to two weeks. The results of the present study revealed that the use of the antimicrobial food preservatives play a great role on the inhibition of microorganisms contaminating stored cheese without cussing any organoleptic quality

  4. Quality of cowpea seeds treated with chemicals and stored in controlled and uncontrolled temperature and humidity conditions

    Directory of Open Access Journals (Sweden)

    Lucicléia Mendes de Oliveira

    2015-06-01

    Full Text Available The cowpea is a Fabaceae originated in Africa cultivated in the northern and northeastern of Brazil, where stands out as the main source of protein for the population. For the establishment of culture, seeds are treated to control and prevent pest attacks and diseases, can also attach nutrients to the seeds which will be available for plant development. The objective of the research was to evaluate the performance of cowpea seeds treated with chemical products and stored in controlled and uncontrolled temperature and humidity conditions. The following seeds treatments were applied: control (no treatment; micronutrient Comol 118, insecticide thiamethoxam, fipronil and pyraclostrobin+thiophanate-methyl and imidacloprid+thiodicarb were then stored in a cold environment and natural. The assessment of physiological seed quality was made initially and every 45 days through the germination and vigor. Among all products used, the imidacloprid + thiodicarb and fipronil + pyraclostrobin + thiophanate methyl provides stimulating effect on seed performance; seeds treated with thiamethoxam were less affected by storage than the untreated seeds; seeds treated with micronutrients exhibits similar behavior to untreated seeds and storage in a controlled environment better preserves the seed physiological quality.

  5. The effect of Store Image and Service Quality on Private Label Brand Image and Purchase Intention. Case Study: Lotte Mart Gandaria City

    OpenAIRE

    Nosica Rizkalla; Leis Suzanawaty

    2012-01-01

    Retailers produce their own private label brand as a strategy to distinguish their products from competitors’. Based on previous research, store image and service quality can be used to improve private label brand image and purchase intention. A Research is conducted at Lotte Mart, Gandaria City Mall in Jakarta to find out whether store image and service quality could influence private label brand image and purchase intention. This research adopts Wu et.al.'s framework (2010). Data processing...

  6. Layer performance, fatty acid profile and the quality of eggs from ...

    African Journals Online (AJOL)

    Sipho Mabusela

    2017-12-14

    Dec 14, 2017 ... Condition of use: The user may copy, distribute, transmit and adapt the work, but must recognize the authors and the South African. Journal of Animal Science. .... whole seeds used in the trial were purchased from Moringa South Africa, a company based in Oudtshoorn,. South Africa. The seeds were stored ...

  7. Water quality and health in northern Canada: stored drinking water and acute gastrointestinal illness in Labrador Inuit.

    Science.gov (United States)

    Wright, Carlee J; Sargeant, Jan M; Edge, Victoria L; Ford, James D; Farahbakhsh, Khosrow; Shiwak, Inez; Flowers, Charlie; Harper, Sherilee L

    2017-07-12

    One of the highest self-reported incidence rates of acute gastrointestinal illness (AGI) in the global peer-reviewed literature occurs in Inuit communities in the Canadian Arctic. This high incidence of illness could be due, in part, to the consumption of contaminated water, as many northern communities face challenges related to the quality of municipal drinking water. Furthermore, many Inuit store drinking water in containers in the home, which could increase the risk of contamination between source and point-of-use (i.e., water recontamination during storage). To examine this risk, this research characterized drinking water collection and storage practices, identified potential risk factors for water contamination between source and point-of-use, and examined possible associations between drinking water contamination and self-reported AGI in the Inuit community of Rigolet, Canada. The study included a cross-sectional census survey that captured data on types of drinking water used, household practices related to drinking water (e.g., how it was collected and stored), physical characteristics of water storage containers, and self-reported AGI. Additionally, water samples were collected from all identified drinking water containers in homes and analyzed for presence of Escherichia coli and total coliforms. Despite municipally treated tap water being available in all homes, 77.6% of households had alternative sources of drinking water stored in containers, and of these containers, 25.2% tested positive for total coliforms. The use of transfer devices and water dippers (i.e., smaller bowls or measuring cups) for the collection and retrieval of water from containers were both significantly associated with increased odds of total coliform presence in stored water (OR transfer device  = 3.4, 95% CI 1.2-11.7; OR dipper  = 13.4, 95% CI 3.8-47.1). Twenty-eight-day period prevalence of self-reported AGI during the month before the survey was 17.2% (95% CI 13

  8. Digestibility, productive performance, and egg quality of laying hens as affected by dried cassava pulp replacement with corn and enzyme supplementation.

    Science.gov (United States)

    Khempaka, Sutisa; Maliwan, Prapot; Okrathok, Supattra; Molee, Wittawat

    2018-02-24

    Two experiments were conducted to investigate the potential use of dried cassava pulp (DCP) supplemented with enzymes as an alternative feed ingredient in laying hen diets. In experiment 1, 45 laying hens (Isa Brown) aged 45 weeks were placed in individual cages to measure nutrient digestibility for 10 days. Nine dietary treatments were control and DCP as a replacement for corn at 20, 25, 30, and 35% supplemented with mixed enzymes (cellulase, glucanase, and xylanase) at 0.10 and 0.15%. Results showed that the use of DCP at 20-35% added with mixed enzymes had no negative effects on dry matter digestibility, while organic matter digestibility and nitrogen retention decreased with increased DCP up to 30-35% in diets. Both enzyme levels (0.10 and 0.15%) showed similar results on nutrient digestibility and retention. In experiment 2, a total of 336 laying hens aged 32 weeks were randomly allocated to seven dietary treatments (control and DCP-substituted diets at 20, 25, and 30%) supplemented with mixed enzymes (0.10 and 0.15%). Diets incorporated with 20-30% of DCP and supplemented with mixed enzymes at both levels had no significant effects on egg production, egg weight, feed intake, egg mass, feed conversion ratio, protein efficiency ratio, or egg quality, except for egg yolk color being decreased with an increase of DCP in diets (P digestibility, productive performance, or egg quality.

  9. Comparative performances of eggs and embryos of sea urchin (Paracentrotus lividus) in toxicity bioassays used for assessment of marine sediment quality.

    Science.gov (United States)

    Khosrovyan, A; Rodríguez-Romero, A; Salamanca, M J; Del Valls, T A; Riba, I; Serrano, F

    2013-05-15

    The potential toxicity of sediments from various ports was assessed by means of two different liquid-phase toxicity bioassays (acute and chronic) with embryos and eggs of sea urchin Paracentrotus lividus. Performances of embryos and eggs of P. lividus in these bioassays were compared for their interchangeable applicability in integrated sediment quality assessment. The obtained endpoints (percentages of normally developed plutei and fertilized eggs) were linked to physical and chemical properties of sediments and demonstrated dependence on sediment contamination. The endpoints in the two bioassays were strongly correlated and generally exhibited similar tendency throughout the samples. Therein, embryos demonstrated higher sensitivity to elutriate exposure, compared to eggs. It was concluded that these tests could be used interchangeably for testing toxicity of marine sediments. Preferential use of any of the bioassays can be determined by the discriminatory capacity of the test or vulnerability consideration of the test subject to the surrounding conditions. Copyright © 2013 Elsevier Ltd. All rights reserved.

  10. Effects of dietary supplementation of resveratrol on performance, egg quality, yolk cholesterol and antioxidant enzyme activity of laying hens.

    Science.gov (United States)

    Feng, Z H; Gong, J G; Zhao, G X; Lin, X; Liu, Y C; Ma, K W

    2017-10-01

    1. This experiment was conducted to evaluate the effects of dietary supplementation of resveratrol on laying performance, egg quality, egg yolk cholesterol and antioxidant enzyme activities of laying hens. 2. A total of 360 Beijing PINK-1 laying hens (60 weeks old) were randomly distributed among five dietary treatments, each of which included 6 replicates of 12 hens. Dietary treatments were basal diet supplemented with 0 (control), 0.5, 1.0, 2.0 and 4.0 g/kg diet resveratrol. The study lasted for 9 weeks including 1 week of adaptation and 8 weeks of the main experimental period. 3. The results indicated that dietary resveratrol significantly improved feed conversion ratios during 5-8 weeks and 1-8 weeks of the trial. Increasing dietary concentrations of the resveratrol linearly improved Haugh unit and albumen height of eggs. 4. The content of total cholesterol (TC), total triglyceride (TG), low density lipoprotein cholesterol (LDL-C), very low density lipoprotein cholesterol (VLDL-C) in serum and cholesterol in yolk was significantly decreased by dietary resveratrol, and there were significant linear correlations between these indexes and resveratrol supplemental levels. 5. Dietary resveratrol supplementation significantly improved serum Glutathione peroxidase (GSH-Px) enzyme activity and decreased serum malondialdehyde (MDA) content in groups with 2.0 and 4.0 g/kg resveratrol as compared to the control, respectively. However, supplementation of resveratrol did not affect the activity of serum superoxide dismutase (SOD). 6. It is concluded that resveratrol supplementation has a positive effect on performance, lipid-related traits and antioxidant activity of laying hens.

  11. CARBOHYDRATES IN VARIETIES OF STORED POTATOES AND INFLUENCE OF STORAGE ON QUALITY OF FRIED PRODUCTS

    Directory of Open Access Journals (Sweden)

    Ján Mareček

    2013-02-01

    Full Text Available The research presented in this work deals with the issue of changes in carbohydrate representation of potato tubers at 11 varieties due to their storage. Time of storage effect on starch and reducing sugars content was examined. The lowest reducing sugar content was observed at the end of the storage at the variety of Markies (0.15%. Sensory quality of the fried potato chips and French fries was assessed by the international system (Colour cards for quality evaluation of potato chips. Best varieties, that showed (even after 6 months of storage the highest sensory assessment at French fries (9, were Agria and Vladan. In case of potato chips the highest rating was 7 points (Laura, Mark, Vladan after the storage time.

  12. Ground annatto seeds (Bixa orellana L. in sorghum-based commercial layer diets and their effects on performance, egg quality, and yolk pigmentation

    Directory of Open Access Journals (Sweden)

    EA Garcia

    2010-12-01

    Full Text Available Consumer demands for healthy foods have stimulated the research on the use of natural products in animal nutrition. Annatto can be used a pigmentation source to improve yolk color of commercial eggs. This study aimed at evaluating the effects of the inclusion of ground annatto seeds on the performance and egg quality of layers fed sorghum-based diets. A total of 336 40-w-old hens were distributed according to randomized blocks into seven treatments with six replicates of eight birds each. The following treatments were applied: T1- egg production feed based on corn and soybean meal; T2- egg production feed based on sorghum and soybean meal; T3, T4, T5, T6, and T7- egg production feed based on sorghum supplemented with 0.5, 1.0, 1.5, 2.0, and 2.5% ground annatto seeds, respectively. As to performance parameters, only egg production was influenced, with hens fed the corn-based diet producing more eggs than those fed the sorghum-based diet with inclusion of 1.5 and 2.5% de annatto. The only egg quality parameter affected by treatments was the color of yolk, which pigmentation increased with increasing levels of ground annatto seeds. It is concluded that ground annatto seeds can be supplemented in sorghum-based production feeds for layers, and that the inclusion level of 0.89% is sufficient to promote the same yolk pigmentation as that obtained with corn-based diets.

  13. Reproductive broodstock performance and egg quality of wild-caught and first-generation domesticated Seriola rivoliana reared under same culture conditions

    Directory of Open Access Journals (Sweden)

    Marcos F Quiñones-Arreola

    2015-11-01

    Full Text Available Almaco jack, Seriola rivoliana as well as some related species is of great interest in marine fish aquaculture. However, there are few studies about their reproduction in captivity. In this research work, reproductive performance and egg quality in two groups of adult Seriola rivoliana, caught in the wild and domesticated-F1 analyzed and compared, reared under optimal maturation conditions in a commercial private Laboratory. A total of 28 wild adult (>5 kg were caught at La Paz Bay, Baja California Sur, Mexico, and 30 adult domesticated-F1 broodstock (>5 kg, were obtained from an original stock of 1,000 juveniles (3.5 g body weight produced at Kona Blue (Hawaii, USA sea farm. Fishes were transported to the Rancheros del Mar commercial private hatchery, where they were grown to adult size. Both groups were evaluated during eight months (May to December 2012 and compared in terms of reproduction performance (total number of spawning events, monthly spawning frequency, total number of eggs, total number of eggs per mL, and fertilization rate, egg biochemical composition (total proteins, total lipids, total carbohydrates, and triacylglycerides and egg diameter. Results indicated that wild caught broostock showed a better reproductive performance in terms of fertilization rate, total number of spawning, monthly spawning frequency and total number of eggs produced. However, biochemical composition and egg diameter did not show statistical differences (P < 0.05 between two groups. The reproductive performance of broodstock and quality of eggs analyzed in this study are important traits to improve the aquaculture management of this species.

  14. Rapid pasteurization of shell eggs using RF

    Science.gov (United States)

    A novel method for rapidly pasteurizing eggs in the shell could enhance the safety of the United States’ food supply. Current federal regulations do not require eggs sold in stores to be pasteurized, yet these eggs are often consumed raw or undercooked and cause untold cases of salmonella illness ea...

  15. Maize kernel size and texture: production parameters, quality of eggs of the laying hens and electricity intake

    Directory of Open Access Journals (Sweden)

    Javer Alves Vieira Filho

    2015-08-01

    Full Text Available The influence of maize corn size and texture on the performance parameters of laying hens and power consumption required for grinding maize corn were evaluated. The experiment was carried out on 384 Isa Brown hens, 36 weeks old, penned in a conventional aviary with 562.5 cm2 bird-1 stocking rate. The treatments were distributed in a completely randomized 2 x 3 factorial design (maize textures: flint and dent; and milling degree: fine, medium and coarse with eight replicates of eight birds per plot. Data were evaluated with SISVAR and means were compared by Tukey’s test at 5% probability. Difference was reported for the variable texture and flint increased the variables feed intake and egg weight. Significant difference in the characteristics of egg quality occurred only for the colorof the yolk. Larger corn sizes consumed less electricity during grinding. The maize flint cultivar had a lower 31.7% power consumption when compared to that of the dent cultivar.

  16. Maternal effects mediated by egg quality in the Yellow-legged Gull Larus michahellis in relation to laying order and embryo sex

    Directory of Open Access Journals (Sweden)

    Caprioli Manuela

    2011-10-01

    Full Text Available Abstract Background Maternal effects mediated by egg size and quality may profoundly affect offspring development and performance, and mothers may adjust egg traits according to environmental or social influences. In avian species, context-dependency of maternal effects may result in variation in egg composition, as well as in differential patterns of covariation among selected egg components, according to, for example, position in the laying sequence or offspring sex. We investigated variation in major classes of egg yolk components (carotenoids, vitamins and steroid hormones in relation to egg size, position in the laying sequence and embryo sex in clutches of the Yellow-legged Gull (Larus michahellis. We also investigated their covariation, to highlight mutual adjustments, maternal constraints or trade-offs in egg allocation. Results Laying sequence-specific patterns of allocation emerged: concentration of carotenoids and vitamin E decreased, while concentrations of androgens increased. Vitamin A, estradiol and corticosterone did not show any change. There was no evidence of sex-specific allocation or covariation of yolk components. Concentrations of carotenoids and vitamins were positively correlated. Egg mass decreased along the laying sequence, and this decrease was negatively correlated with the mean concentrations of carotenoids in clutches, suggesting that nutritionally constrained females lay low quality clutches in terms of carotenoid content. Finally, clutches with smaller decline in antioxidants between first- and last-laid eggs had a larger increase in yolk corticosterone, suggesting that a smaller antioxidant depletion along the laying sequence may entail a cost for laying females in terms of increased stress levels. Conclusions Since some of the analyzed yolk components (e.g. testosterone and lutein are known to exert sex-specific phenotypic effects on the progeny in this species, the lack of sex-specific egg allocation by

  17. Eggs: good or bad?

    Science.gov (United States)

    Griffin, Bruce A

    2016-08-01

    Eggs have one of the lowest energy to nutrient density ratios of any food, and contain a quality of protein that is superior to beef steak and similar to dairy. From a nutritional perspective, this must qualify eggs as 'good'. The greater burden of proof has been to establish that eggs are not 'bad', by increasing awareness of the difference between dietary and blood cholesterol, and accumulating sufficient evidence to exonerate eggs from their associations with CVD and diabetes. After 60 years of research, a general consensus has now been reached that dietary cholesterol, chiefly from eggs, exerts a relatively small effect on serum LDL-cholesterol and CVD risk, in comparison with other diet and lifestyle factors. While dietary guidelines have been revised worldwide to reflect this view, associations between egg intake and the incidence of diabetes, and increased CVD risk in diabetes, prevail. These associations may be explained, in part, by residual confounding produced by other dietary components. The strength of evidence that links egg intake to increased CVD risk in diabetes is also complicated by variation in the response of serum LDL-cholesterol to eggs and dietary cholesterol in types 1 and 2 diabetes. On balance, the answer to the question as to whether eggs are 'bad', is probably 'no', but we do need to gain a better understanding of the effects of dietary cholesterol and its association with CVD risk in diabetes.

  18. Influence of dietary inclusion of Bacillus licheniformis on laying performance, egg quality, antioxidant enzyme activities, and intestinal barrier function of laying hens.

    Science.gov (United States)

    Lei, K; Li, Y L; Yu, D Y; Rajput, I R; Li, W F

    2013-09-01

    This experiment was conducted to evaluate the effects of dietary inclusion of Bacillus licheniformis on laying performance, egg quality, antioxidant enzyme activities, and intestinal barrier function of laying hens. Hy-Line Variety W-36 hens (n = 540; 28 wk of age) were randomized into 6 groups, each group with 6 replications (n = 15). The control group received the basal diet formulated with maize and soybean meal. The treatment groups received the same basal diets supplemented with 0.01, 0.02, 0.03, 0.06, and 0.09% Bacillus licheniformis powder (2 × 10(10) cfu/g) for an 8-wk trial. The results showed that dietary supplementation with 0.01 and 0.03% B. licheniformis significantly increased egg production and egg mass. However, no significant differences were observed in egg weight, feed consumption, and feed conversion efficiency among the 6 groups. Supplementation with different levels of B. licheniformis was found to be effective in improvement of egg quality by increasing egg shell thickness and strength. Compared with control, d-lactate content, diamine oxidase activity, and adrenocorticotropic hormone level in serum decreased significantly, and the level of estradiol and follicle-stimulating hormone increased significantly in plasma of all the experimental groups. Dietary supplementation with B. licheniformis increased the intestinal villus height and reduced the crypt depth. In conclusion, dietary inclusion of B. licheniformis could improve laying performance and egg quality significantly in a dose-dependent manner by decreasing the stress response, upregulating the growth hormone, and improving intestinal health.

  19. Effects of Technological Parameters and Fishing Ground on Quality Attributes of Thawed, Chilled Cod Fillets Stored in Modified Atmosphere Packaging

    DEFF Research Database (Denmark)

    Bøknæs, Niels; Østerberg, Carsten; Sørensen, Rie

    2001-01-01

    . The parameters investigated were: (1) packaging in modified atmosphere during frozen storage, (2)frozen storage period and temperature, (3),fishing ground and chill storage temperature, together with (4) the addition of trimethylamine oxide (TMAO) and sodium chloride (NaCl) to cod fillets before freezing......Effects were studied of various technological parameters and fishing ground on quality attributes of thawed, chilled cod fillets stored in modified atmosphere packaging Frozen fillets of Baltic Sea and Barents Sea cod, representing two commercial fishing grounds, were used as raw material...... of Baltic Sea cod. Therefore, addition of trimethylamine oxide and NaCl to Baltic Sea cod fillets was evaluated and shown to protect P, phosphoreum against fro::en storage inactivation and this explained the observed differences in growth of the spoilage bacteria and trimethylamine production between thawed...

  20. EGG QUALITY AND HATCHABILITY OF In situ - REARED KEDU AND CEMANI HENS FED DIET OF FARMER FORMULATION SUPPLEMENTED WITH VITAMIN E

    Directory of Open Access Journals (Sweden)

    H.I. Wahyuni

    2014-10-01

    Full Text Available The aim of study was to evaluate the effect of dietary vitamin E supplementation in Kedu andCemani hens reraed in situ and given farmer-formulated diet on egg performances. A total of 120 femaleand 24 male birds were equally divided into two groups of Kedu and Cemani, with average body weightof 1890+216.79 and 1830+396.23 g, respectively. Basal ration was based on the diet formulated by thefarmer (R1 consisting of corn (30%, rice bran (50%, protein concentrate (15%, and premix (5%.Dietary treatments evaluated were R1 (without additional vitamin E, and the other three were theinclusion of DL α-tocopheryl acetate into the R1 diet up to 2 (R2, 4 (R3 and 6 IU (R4. The experimentwas arranged in a Randomized Block Design with 4 treatments, and 2 different groups of hen (Kedu andCemani were assigned as block. Parameters observed were feed consumption, hen day production, feedconversion ratio, egg quality, fertility, and hatchability. The result showed that vitamin Esupplementation did not affect whatever parameters, except egg fertility. Egg hatchability between Keduand Cemani hens was significantly different (p<0.05. Trend comparison test indicated significantlylinear (p<0.05 for fertility and hatchability. In conclusion, vitamin E supplementation up to 6 IUincreased linearly egg fertility and hatchability of about 5-8%, and egg hatchability of Kedu hens washigher (11% than that of Cemani.

  1. Hardware Commissioning of the LHC Quality Assurance, follow-up and storing of the test results

    CERN Document Server

    Barbero, E

    2005-01-01

    During the commissioning of the LHC technical systems [1] (the so-called Hardware Commissioning) a large number of test sequences and procedures will be applied to the different systems and components of the accelerator. All the information related to the coordination of the Hardware Commissioning will be structured and managed towards the final objective of integrating all the data produced in the Manufacturing and Test Folders (MTF) [2] at both equipment level (i.e. individual system tests) and commissioning level (i.e.Hardware Commissioning). The MTF for Hardware Commissioning will be mainly used to archive the results of the tests (i.e. status, parameters and waveforms) which will be used later as reference during the operation with beam. Also it is an indispensable tool for monitoring the progress of the different tests and ensuring the proper follow-up of the procedures described in the engineering specifications; in this way, the Quality Assurance process will be completed. This paper describes the spe...

  2. Quality of harvested autologous platelets compared with stored donor platelets for use after cardiopulmonary bypass procedures.

    Science.gov (United States)

    Crowther, M; Ford, I; Jeffrey, R R; Urbaniak, S J; Greaves, M

    2000-10-01

    Platelet dysfunction has a major contribution in bleeding after cardiopulmonary bypass (CPB) and transfusion of platelets is frequently used to secure haemostasis. Allogeneic platelets prepared for transfusion are functionally impaired. Autologous platelets harvested preoperatively require a shorter storage time before transfusion and their use also avoids the risks associated with transfusion of allogeneic blood products. For the first time, we have compared the functional quality of autologous platelets with allogeneic platelets prepared by two methods, immediately before infusion. Platelet activation was assessed by P-selectin expression and fibrinogen binding using flow cytometry. We also monitored the effects of CPB surgery and re-infusion of autologous platelets on platelet function. Autologous platelet-rich plasma (PRP) contained a significantly lower (P platelets compared with allogeneic platelet preparations, and also contained a significantly higher (P platelets. Allogeneic platelets prepared by donor apheresis were more activated and less responsive than those produced by centrifugation of whole blood. In patients' blood, the percentage of platelets expressing P-selectin or binding fibrinogen increased significantly after CPB (P platelets responsive to in vitro agonists was decreased (P platelet activation during the procedure. The percentage of activated platelets decreased (statistically not significant) after re-infusion of autologous PRP. P-selectin expression had returned to pre-CPB levels 24 h post-operatively. Autologous platelet preparations display minimal activation, but remain responsive. Conservation of platelet function may contribute to the potential clinical benefits of autologous transfusion in cardiopulmonary bypass.

  3. LAMURU CORN SEED QUALITY IN DIFFERENT STORE PERIOD WITH SOME STUDIES METHOD

    Directory of Open Access Journals (Sweden)

    Rahmawati

    2014-01-01

    Full Text Available Research quality of seed executed at green house and laboratory of seed, Hall of Research of Crop of Serealia Maros in May 2013. Maize used is Lamuru coming from warehouse of UPBS Balitsereal with period keep 12 and 23 month. Research conducted by using RCD four replicated. Result: test by using sand media show percentage germinate, speed growth, length root, amount root of secondary, long of shoot and seed of sprout do not differ significant. Examinatied by piercing paper test to show percentage germinated, speed growth and dry wight of sprout differ significant, while length root, amount secondary root and seed shoot not significant. Use of Brick gravel test to show same result by is piercing paper test except dry weight of sprout at brick gravel test to show result which do not significant. Seed with period keep 12 month have percentage germinate, dry weight sprout, long root primary, sum up root secondary and same seed length at all method test, while speed growth to differ significant at piercing paper test. Seed with period keep 23 month show different result by 12 month. Dry weight sprout, long root primary, sum up root secondary and seed length shoot show same result, while speed growth show different result at third test method. Percentage germinate obtained by piercing paper test to differ significant by brick is gravel test and sand media.

  4. Albumen foam stability and s-ovalbumin contents in eggs coated with whey protein concentrate

    Directory of Open Access Journals (Sweden)

    ACC Alleoni

    2004-06-01

    Full Text Available Food products such as breads, cakes, crackers, meringues, ice creams and several bakery items depend on air incorporation to maintain their texture and structure during or after processing. Proteins are utilized in the food industry since they improve texture attributes through their ability to encapsulate and retain air. The objectives of this work were to quantify s-ovalbumin contents in albumen and to determine alterations in egg white foam stability in fresh eggs, and in eggs coated and non-coated with a whey protein-based concentrate film (WPC, stored at 25°C for 28 days. The volume of drained liquid was higher in non-coated eggs than in coated eggs stored at 25°C at all storage periods. The difference on the third day of storage was in the order of 59% between coated and non-coated eggs, while on the twenty-eighth day it was 202%. During the storage period, an increase in pH and drainage volume was observed for non-coated eggs. After three days, the non-coated eggs showed a s-ovalbumin content 33% higher than coated eggs; this increase jumped to 205% at 28 days of storage. There was a positive correlation between s-ovalbumin content and the volume of drained liquid for coated and non-coated eggs; in other words, when the s-ovalbumin content increased, there was an increase in the volume of drained liquid and a decrease in foam stability. WPC coating maintain egg quality, since it is an effective barrier against the loss of CO2, avoiding changes in the pH of egg white.

  5. Short- and long-term effects of egg size and feeding frequency on offspring quality in the collared flycatcher (Ficedula albicollis).

    Science.gov (United States)

    Krist, Milos

    2009-09-01

    1. Despite the central importance for life-history theory, egg-size effects on offspring fitness are still considered ambiguous. Most previous studies were only observational and consequently might suffer from uncontrolled correlations between egg size and parental/territory quality. Even after cross-fostering is performed, direct genetic effects and parental adjustment of post-natal care might confound our estimates of egg-size effects per se. 2. I performed a full cross-fostering experiment in the collared flycatcher (Ficedula albicollis) exchanging the whole clutches between pairs of nests. I statistically controlled for direct genetic effects and parental feeding frequencies. I followed young until recruitment to estimate the long-term effects of egg size and parental provisioning. In addition, I compared the effects obtained in the cross-fostering experiment with those obtained from a set of unmanipulated nests. 3. Egg size per se affected offspring morphology in both the short and long term, while having no effect on offspring survival and immunity. Egg-size effects were not confounded by parental post-natal care and direct genetic effects. 4. The number of care-givers was an influential predictor of nestling performance. Apart from the variation caused by this factor, feeding frequencies had no consistent effect on offspring performance. 5. Fitness benefits of large eggs may be difficult to establish due to variation of egg-size effects between years and habitats. Feeding frequency may affect offspring state but offspring state may also affect feeding frequency. Varying causality between feeding rate and offspring state may preclude the detection of a positive effect of the former on the latter.

  6. Balancing Eggs

    Science.gov (United States)

    Mills, Allan

    2014-01-01

    Theory predicts that an egg-shaped body should rest in stable equilibrium when on its side, balance vertically in metastable equilibrium on its broad end and be completely unstable on its narrow end. A homogeneous solid egg made from wood, clay or plastic behaves in this way, but a real egg will not stand on either end. It is shown that this…

  7. The effect of Store Image and Service Quality on Private Label Brand Image and Purchase Intention. Case Study: Lotte Mart Gandaria City

    Directory of Open Access Journals (Sweden)

    Nosica Rizkalla

    2012-12-01

    Full Text Available Retailers produce their own private label brand as a strategy to distinguish their products from competitors’. Based on previous research, store image and service quality can be used to improve private label brand image and purchase intention. A Research is conducted at Lotte Mart, Gandaria City Mall in Jakarta to find out whether store image and service quality could influence private label brand image and purchase intention. This research adopts Wu et.al.'s framework (2010. Data processing uses Structure Equation Modeling. Research outcome reveals that service quality is a significant factor in influencing private label brand image and purchase intention.

  8. Effects of rice bran on performance, egg quality, oxidative status, yolk fatty acid composition, and fatty acid metabolism-related gene expression in laying ducks.

    Science.gov (United States)

    Ruan, D; Lin, Y C; Chen, W; Wang, S; Xia, W G; Fouad, A M; Zheng, C T

    2015-12-01

    The study was designed to evaluate the effects of different dietary levels of rice bran (RB) in laying duck diets on performance, egg quality, oxidation status, egg yolk fatty acid composition, and hepatic expression of fatty acid metabolism-related genes. Longyan females (1080) with similar BW at 19 wk of age were randomly assigned to 6 dietary treatments, each consisting of 6 replicates of 30 birds. The basal diet (I) was a typical corn-soybean ration while the experimental diets (II to VI) substituted RB for corn and wheat bran and a small reduction of soybean meal. The level of substitution in diets (II to VI) was 6%, 12%, 18%, 24%, and 30%, respectively. The experiment lasted for 12 wks. Average egg weight and daily egg mass decreased linearly as the level of RB inclusion increased (Pegg yolk linearly decreased with increasing RB, and many of the key polyunsaturated fatty acids (PUFA), like C18:2 n-6 and C18:3 n-3, linearly increased (Pegg yolk cholesterol or triglyceride content (P>0.05). In conclusion, the current study suggests that ducks from 19 to 31 wk could be fed diets with up to about 18% RB without effect on the number of eggs produced, egg quality, and oxidative status. Increasing amounts of RB linearly increased egg yolk concentrations of key fatty acids like C18:2 n-6 and C18:3 n-3 and decreased the hepatic abundance of FAS and SREBP-1 transcripts. © 2015 Poultry Science Association Inc.

  9. Productive performance, egg quality, blood constituents, immune functions, and antioxidant parameters in laying hens fed diets with different levels of Yucca schidigera extract.

    Science.gov (United States)

    Alagawany, Mahmoud; Abd El-Hack, Mohamed E; El-Kholy, Mohamed S

    2016-04-01

    This study evaluated the effect of Yucca schidigera extract on productive performance, egg quality, blood metabolites, immune function, and antioxidant parameters in laying hens. A total of 96 36-week-old hens were allocated into four groups, the control diet or the diet supplemented with 50, 100, or 150 mg/kg of yucca extract, from 36 to 52 weeks of age. Hens were divided into four equal groups replicated six times with four hens per replicate. As a result of this study, there were no linearly or quadratically differences in body weight change (BWC), feed consumption (FC), feed conversion ratio (FCR), and egg weight (EW) due to yucca treatments at different ages, except FCR and EW that were improved with yucca supplementation during 36-40 weeks of age. Supplemental dietary yucca up to 100 mg/kg diet led to significant improvement in egg number (EN) and egg mass (EM). Egg qualities were not linearly or quadratically affected by yucca treatments except shell thickness was quadratically (P hen diets resulted in a significant linear (P feed additive to improve productive performance, blood profile, and antioxidant enzyme activities in laying hens.

  10. The Effect of Advertising Spending on Brand Loyalty Mediated by Store Image, Perceived Quality and Customer Satisfaction: A Case of Hypermarkets

    OpenAIRE

    Farhina Hameed

    2013-01-01

    First, the study aims to investigate the effect of advertising spending on brand loyalty. Second, to test the mediating role of store image, perceived quality and customer satisfaction in above mentioned relationship. A quantitative approach was employed, using 15-item, 5-point Likert scale questionnaire administered to 360 participants. Data from the departmental stores are used to examine the direct and indirect impact of advertising spending on brand loyalty. Confirmatory Factor Analysis a...

  11. The Analysis of Product, Price, Place, Promotion and Service Quality on Customers’ Buying Decision of Convenience Store: A Survey of Young Adult in Bekasi, West Java, Indonesia

    OpenAIRE

    Junio Andret; Nabila H Zhafira; Sheila S Akmal; Suresh Kumar

    2013-01-01

    This research aim to analyze why the number of convenience store keep increasing by identify the dominant factors which are product, price, place, promotion and service quality that affect customer buying decision of convenience store in Bekasi. This research also as an input to help smaller traders in having better performance in future market. This research involves 300 Bekasi populations to obtain the required data. Then the questionnaire result analyzed with SPPS statistics wh...

  12. Effects of continuous drought and immersion on hatchability of Ochlerotatus albifasciatus (Diptera: Culicidae eggs stored at low temperature Efecto de la sequía continua y la inmersión sobre la respuesta de eclosión de los huevos de Ochlerotatus albifasciatus (Diptera: Culicidae almacenados a baja temperatura

    Directory of Open Access Journals (Sweden)

    Raúl E Campos

    2007-07-01

    Full Text Available The role of environmental factors on the hatching response of O. albifasciatus (Macquart eggs is studied by simulating winter conditions in the laboratory. The hypothesis tested was that hatching response is affected by: (1 time that eggs remain at low temperature, (2 storage conditions, and (3 acclimatization time. Eggs were stored at 5ºC in drought and immersion conditions during 7, 21, 35, 90 and 146 days, immediately after, they were acclimatized at 22ºC during 24, 72, and 168 hours, and then eggs were flooded to induce hatching. Percent of hatched eggs was analyzed with a Generalized Lineal Model with a binomial distribution. Results show that: (1 a long storage period at cold temperature and long acclimatization periods improve the hatching response; (2 storage conditions have a moderate effect on hatching, being more evident in eggs stored dry; (3 a long time of acclimatization favors the hatching response in submerged eggs more than in eggs stored dry; (4 long time at cold favors the hatching response in eggs stored dry more than in submerged eggs; (5 the hatching response of eggs that remain for a long time at low temperature is higher when the time of acclimatization is long.Se estudió el rol de los factores ambientales sobre la eclosión de los huevos de O. albifasciatus (Macquart, simulando condiciones de invierno. La hipótesis planteada fue que la respuesta de eclosión de los huevos depende de: (1 tiempo de permanencia a baja temperatura, (2 condiciones de almacenamiento, y (3 tiempo de aclimatación. Los huevos fueron almacenados a 5º C en condiciones de sequía y sumergidos durante 7, 21, 35, 90 y 146 días; luego fueron aclimatados a 22º C durante 24, 72, y 168 horas y posteriormente inundados para inducir la eclosión. El porcentaje de huevos eclosionados se analizó con un Modelo Lineal Generalizado con distribución binomial. Los resultados mostraron que: (1 largos períodos de almacenamiento en frío y largos tiempos

  13. Effect of combination of chitosan coating and irradiation on physicochemical and functional properties of chicken egg during room-temperature storage

    International Nuclear Information System (INIS)

    Liu Xianxe; Jang, Aera; Kim, Dong Hun; Lee, Bong Duk; Lee, Mooha; Jo, Cheorun

    2009-01-01

    The effect of combination of chitosan coating and irradiation on quality and storage stability of shell egg was investigated. Salmonella typhimurium inoculated on eggshell was not detected by irradiation of 2.0 kGy at day 0 and/or chitosan coating (1%, pH 5.0) after 3 days of storage. One-day-old fresh chicken egg was chitosan coated and irradiated at 0, 0.5, 1.0, 1.5 and 2.0 kGy by gamma ray. The egg samples were stored at room temperature for 14 days and the effects of the combination treatment on internal physicochemical and functional properties were investigated. The Haugh unit of egg was decreased by irradiation even at 0.5 kGy. Irradiation increased the lipid oxidation in egg yolk at 2 kGy but the egg with chitosan coating reduced the level of lipid oxidation. Irradiation increased the foaming ability of egg white and decreased viscosity of egg yolk and white. Results suggested that combination of irradiation and chitosan coating can improve safety of shell egg but irradiation treatment may reduce the egg quality for direct consumption. However, an improved functional property for further processing and efficient separation of egg white and yolk can be expected for egg processing industry using irradiation.

  14. The effect of glaze on the quality of frozen stored Alaska pollack (Theragra chalcogramma fillets under stable and unstable conditions

    Directory of Open Access Journals (Sweden)

    Peter Žoldoš

    2011-01-01

    Full Text Available Frozen fillets (n = 288 of Alaska pollack (Theragra chalcogramma were used to evaluate the effect of glaze on lipid oxidation and microbiological indicators during 6 months of freezing storage under stable (−18 °C and unstable temperature (varying from −5 to −18 °C conditions. The amount of glaze, moisture, fat and protein content were measured. Despite the low fat content in Alaska pollack, a positive effect of glazing and stable freezing conditions of storage on the range of oxidative changes of lipids expressed as thiobarbituric acid reactive substances was found. Total counts of viable cells slightly rose before the end of the storage period in both groups with commercially glazed fish. The average counts of psychrotrophs in each group ( were at the same level, ranging from 9.1 ×103 CFU·g-1 to 1.1 × 104 CFU·g-1. According to the microbiological results fillets stored under unstable conditions were considered to be acceptable, but sensory evaluation showed that at the end of frozen storage they could not be consumed because of rancidity. Based on our results, glaze application ranged from 10 to 15% guarantee of final quality, however, prevention of temperature fluctuation during storage is important to keep the quality of the frozen fillets. This is the first similar study in Alaska pollack.

  15. Effect of Gamma-Irradiation and Coating on the Quality and Marketing Ability of Cold-Stored Wonderful Arils Pomegranates

    International Nuclear Information System (INIS)

    Mostafa, M.M; Naweto, M.A; Salem, A.E.

    2014-01-01

    Gamma-irradiation either alone and in combination with jojoba oil was tested consecutively for 2011 and 2012 seasons for extending the shelf life of arils «Wonderful» pomegranates. Fruits harvested from a commercial orchard, Giza Governorate. Arils fruits were irradiated by doses 0.25 and 0.50 and 0.75 KGy and coated of 5% jojoba oil then stored at 2±1°C and RH 90% for 21 days and under ambient temperature (20±2°C and RH 80%) for 7 days. Arils quality characteristics (weight loss, fungal decay percentage caused by Aspergillus sp. and Alternaria sp., general appearance, total soluble solids, acidity, L-ascorbic acid and total anthocyanin) were evaluated periodically at removal from cold stor- age and after holding at 20°C. Results showed irradiation at 0.25 KGy in combination with 5% jojoba oil minimized fungal decay of pomegranates arils and obtained the highest significant values of quality character - istics. Whereas jojoba oil treatments were markedly reduced weight loss than control and other treatments. Although total anthocyanin showed insignificant differences among all treatments but arils coated exhibited a slight increase than other

  16. Effects of essential oils on performance, egg quality, nutrient digestibility and yolk fatty acid profile in laying hens.

    Science.gov (United States)

    Ding, Xuemei; Yu, Yang; Su, Zhuowei; Zhang, Keying

    2017-06-01

    The study was conducted to investigate the effect of essential oils on performance, egg quality, nutrient digestibility and yolk fatty acid profile in laying hens. A total of 960 Lohmann laying hens aged 53 weeks were enrolled, under 4 different treatment diets supplemented with 0, 50, 100 and 150 mg/kg essential oils (Enviva EO, Dupont Nutrition Biosciences ApS, Denmark), respectively. Each treatment was replicated 8 times with 30 birds each. Birds were fed dietary treatment diets for 12 weeks (54 to 65 weeks). For data recording and analysis, a 12-week period was divided into 3 periods of 4 weeks' duration each: period 1 (54 to 57 weeks), period 2 (58 to 61 weeks), and period 3 (62 to 65 weeks). For the diet supplemented with Enviva EO, hen-day egg production and the feed conversion ratio (FCR) were significantly improved ( P  digestibility in the 100 mg/kg Enviva EO treatment group was significantly increased ( P  digestibility in the 100 and 150 mg/kg Enviva EO treatment groups was significantly decreased ( P  digestibility. Saturated fatty acid (SFA) and monounsaturated fatty acid (MUFA) gradually decreased and polyunsaturated fatty acid (PUFA) increased with Enviva EO supplementation, but the difference was not significant. The data suggested that the supplementation of essential oils (Enviva EO) in laying hen diet did not show a significant positive effect on performance and yolk fatty acid composition but it tended to increase eggshell thickness and protein digestibility, especially at the dose of 50 mg/kg.

  17. The preliminary studies on parasitization of Trichogramma chilonis on Helicoverpa armigera eggs and eggs from irradiated Helicoverpa armigera moths

    International Nuclear Information System (INIS)

    Wang Endong; Lu Daguang; Liu Xiaohui; Li Yongjun; Zhang Shuyong; Liu Qiongru; Wang Huasong

    2002-01-01

    The parasitization rates of Trichogramma chilonis on 250 Gy irradiated and unirradiated fresh eggs of cotton bollworm, Helicoverpa armigera, were not significantly different. The parasitization rate on irradiated chill-stored eggs of H. armigera was lower than that on irradiated fresh eggs. The parasitization rates on eggs from 250 Gy irradiated H. armigera moths depended on their embryonated rates

  18. Avian Egg and Egg Coat.

    Science.gov (United States)

    Okumura, Hiroki

    2017-01-01

    An ovulated egg of vertebrates is surrounded by unique extracellular matrix, the egg coat or zona pellucida, playing important roles in fertilization and early development. The vertebrate egg coat is composed of two to six zona pellucida (ZP) glycoproteins that are characterized by the evolutionarily conserved ZP-domain module and classified into six subfamilies based on phylogenetic analyses. Interestingly, investigations of biochemical and functional features of the ZP glycoproteins show that the roles of each ZP-glycoprotein family member in the egg-coat formation and the egg-sperm interactions seemingly vary across vertebrates. This might be one reason why comprehensive understandings of the molecular basis of either architecture or physiological functions of egg coat still remain elusive despite more than 3 decades of intensive investigations. In this chapter, an overview of avian egg focusing on the oogenesis are provided in the first section, and unique features of avian egg coat, i.e., perivitelline layer, including the morphology, biogenesis pathway, and physiological functions are discussed mainly on chicken and quail in terms of the characteristics of ZP glycoproteins in the following sections. In addition, these features of avian egg coat are compared to mammalian zona pellucida, from the viewpoint that the structural and functional varieties of ZP glycoproteins might be associated with the evolutionary adaptation to their reproductive strategies. By comparing the egg coat of birds and mammals whose reproductive strategies are largely different, new insights into the molecular mechanisms of vertebrate egg-sperm interactions might be provided.

  19. Microbiological and Chemical Quality of Packaged Sachet Water and Household Stored Drinking Water in Freetown, Sierra Leone.

    Science.gov (United States)

    Fisher, Michael B; Williams, Ashley R; Jalloh, Mohamed F; Saquee, George; Bain, Robert E S; Bartram, Jamie K

    2015-01-01

    Packaged drinking water (PW) sold in bottles and plastic bags/sachets is widely consumed in low- and middle-income countries (LMICs), and many urban users in sub-Saharan Africa (SSA) rely on packaged sachet water (PSW) as their primary source of water for consumption. However, few rigorous studies have investigated PSW quality in SSA, and none have compared PSW to stored household water for consumption (HWC). A clearer understanding of PSW quality in the context of alternative sources is needed to inform policy and regulation. As elsewhere in SSA, PSW is widely consumed in Sierra Leone, but government oversight is nearly nonexistent. This study examined the microbiological and chemical quality of a representative sample of PSW products in Freetown, Sierra Leone at packaged water manufacturing facilities (PWMFs) and at points of sale (POSs). Samples of HWC were also analyzed for comparison. The study did not find evidence of serious chemical contamination among the parameters studied. However, 19% of 45 PSW products sampled at the PWMF contained detectable Escherichia coli (EC), although only two samples exceeded 10 CFU/100 mL. Concentrations of total coliforms (TC) in PSW (but not EC) increased along the supply chain. Samples of HWC from 60 households in Freetown were significantly more likely to contain EC and TC than PSW at the point of production (p<0.01), and had significantly higher concentrations of both bacterial indicators (p<0.01). These results highlight the need for additional PSW regulation and surveillance, while demonstrating the need to prioritize the safety of HWC. At present, PSW may be the least unsafe option for many households.

  20. Effects of dietary fatty acids on the production and quality of eggs and larvae of Atlantic cod (Gadus morhua L.)

    DEFF Research Database (Denmark)

    Røjbek, Maria; Støttrup, Josianne; Jacobsen, Charlotte

    2014-01-01

    Cultivated Atlantic cod (Gadus morhua) entering their first year of gamete maturation were fed diets with different levels of arachidonic acid (ARA) and eicosapentaenoic acid (EPA) for 6.5 months prior to commencement of spawning. Gravid females were stripped three times: at the beginning, peak......–173% higher in eggs than in diets. Cod fed the diet with the lowest EPA/ARA ratio had the greatest egg production. Eggs from fish on a diet with high ARA level had significantly higher fertilization and hatching success than those fed low levels of ARA. This diet produced on average 71 viable eggs g 1 female...

  1. Replacing Corn and Wheat in Layer Diets with Hulless Oats Shows Effects on Sensory Properties and Yolk Quality of Eggs

    Directory of Open Access Journals (Sweden)

    Louisa R. Winkler

    2017-07-01

    Full Text Available US organic poultry producers are under pressure to find feed alternatives to corn and wheat. Hulless oats offer advantages such as wide geographic adaptation of the plant and high concentrations of protein and oil in the grain. They have shown considerable potential in experimental work as a feed grain for poultry, but more research is needed into their influence on the sensory and nutritional properties of eggs. In this study, hulless oats were substituted for corn or wheat at 200 g kg−1 in diets fed to Hy-Line Brown hens and eggs were sampled for sensory evaluation after 8 weeks. Discrimination tests of blended and baked egg samples found evidence of difference between eggs from oat-based diets and those from the oat-free control (p < 0.05 for eggs from an oat-corn diet, p < 0.01 for eggs from an oat-wheat diet. Acceptance tests of similar samples showed that eggs from the oat-wheat diet were significantly less liked than control eggs for their texture (p < 0.01 and response to cooking (p < 0.01, while eggs from the oat-corn diet were somewhat less liked. Yolk weight was greater (p < 0.05 in control eggs (34.1 g than eggs from oat-corn (31.6 g or oat-wheat (31.2 g diets, leading to smaller yolk proportion in the oat-fed eggs. Fatty acid profile differences across treatments were not of nutritional significance, and no evidence was found that the feeding of hulless oats improved storage properties of eggs. In this study, modifying the carbohydrate source in layer diets was shown to change textural properties of cooked eggs in a way that was perceptible to untrained consumers, probably by reducing the yolk proportion. This finding was not commercially relevant owing to small effect size, and results overall add to existing evidence that hulless oats can be fed to poultry at a moderate proportion of the diet with no negative effect on consumer acceptability of eggs. Regardless of the small effect size, however

  2. Effect of dietary supplementation of Ligustrum lucidum on performance, egg quality and blood biochemical parameters of Hy-Line Brown hens during the late laying period.

    Science.gov (United States)

    Li, X L; He, W L; Yang, M L; Yan, Y M; Xue, Y H; Zhao, S T

    2017-11-01

    The fruit of Ligustrum lucidum (FLL, Nuzhenzi in Chinese) is an important traditional medicine, and have attracted significant research attention because of their various biological activities. However, there are few research reports available on the use of FLL as a feed additive in livestock nutrition, particularly in layers. This study was conducted to determine the effects of supplementation of the diet of laying hens with FLL on laying performance, egg quality and blood metabolites. A total of 360 72-week-old hens were allocated to three dietary treatments (eight replications of 15 hens/treatment group) and were fed either a control diet or a diet supplemented with an inclusion level of 0.25% or 0.50% of FLL powder in the final feed, until 78 weeks of age. Hens were housed in a three-tier cage system. Feed and water were provided ad libitum. Blood samples and eggs were collected at the end of the experiment. The results showed that dietary supplementation with FLL did not affect egg weight, feed conversion ratio, eggshell thickness, albumen height, egg yolk color, eggshell breaking strength or egg shape index. However, FLL supplementation significantly decreased (Phens fed FLL compared with the control group. It can be concluded that FLL, at a supplementation level of 0.25% final feed, can be used as an effective feed additive to improve the performance of laying hens during the late laying period.

  3. Effect of dietary supplementation of hemp seed (Cannabis sativa L.) on meat quality and egg fatty acid composition of Japanese quail (Coturnix coturnix japonica).

    Science.gov (United States)

    Yalcin, H; Konca, Y; Durmuscelebi, F

    2018-02-01

    This study was conducted in two separate experiments. Experiment I was conducted to investigate the effects of hemp seed (HS) on meat quality traits, and experiment II was designed to determine egg fatty acid (FA) composition in Japanese quail (Coturnix coturnix japonica). In experiment I and experiment II treatments, groups were as follows: (i) control (not included HS0), (ii) 5% HS inclusion to diets, (iii) 10% HS inclusion to diets and (iv) 20% HS inclusion to diets. In experiment I, a total of 192 7-day-old-quail were fed with HS diets for 5 weeks, and end of the experiment I, a total of 64 quail (16 each) slaughtered and meat samples were analysed for meat colour, pH, cooking and thawing loss and FA composition. In experiment II, a total of 120 8-week-old laying quail were fed with experimental diets for 6 weeks and egg FA composition were determined. Breast meat cooking loss was significantly lower in 20% supplemented group (p egg samples were linearly increased with increasing the dietary HS ratio (p eggs (p egg yolk omega-3 FA content and decrease cooking loss of quail meats. © 2017 Blackwell Verlag GmbH.

  4. Effect of fluorescent vs. poultry-specific light-emitting diode lights on production performance and egg quality of W-36 laying hens.

    Science.gov (United States)

    Liu, Kai; Xin, Hongwei; Sekhon, Jasreen; Wang, Tong

    2018-03-01

    More energy-efficient, durable, affordable, and dimmable light-emitting diode (LED) lights are finding applications in poultry production. However, data are lacking on controlled comparative studies concerning the impact of such lights during the pullet rearing and subsequent laying phase. This study evaluated two types of poultry-specific LED light (PS-LED) vs. fluorescent light (FL) with regards to their effects on hen laying performance. A total of 432 Hy-Line W-36 laying hens were tested in two batches using four environmental chambers (nine cages per chamber and 6 birds per cage) from 17 to 41 weeks of age (WOA). Dim-to-red PS-LED and warm-white FL were used in the laying phase. The hens had been reared under a dim-to-blue PS-LED or a warm-white FL from 1 to 16 WOA. The measured performance variables included 1) timing of sexual maturity, 2) egg production performance, 3) egg quality, and 4) egg yolk cholesterol. Results showed that the two types of light used during the laying phase had comparable performance responses for all response parameters (P > 0.05) with a few exceptions. Specifically, eggs laid from hens in the PS-LED treatment had lower shell thickness (P = 0.01) and strength (P = 0.03) than those in the FL treatment at 41 WOA. The two types of light used during the rearing phase did not influence the 17 to 41 WOA laying performance, except that hens reared under the PS-LED laid eggs with lower shell thickness (P = 0.02) at 32 WOA as compared to hens reared under the FL. This study demonstrates that the emerging poultry-specific LED lights yield comparable production performance and egg quality of W-36 laying hens to the traditional fluorescent lights.

  5. Effect of calcium and salicylic acid on quality retention in relation to antioxidative enzymes in radish stored under refrigerated conditions.

    Science.gov (United States)

    Devi, Jomika; Bhatia, Surekha; Alam, M S; Dhillon, Tarsem Singh

    2018-03-01

    Effect of post harvest treatments with calcium chloride (CaCl 2 ) and salicylic acid (SA) on physiological and biochemical parameters in relation to activities of antioxidative enzymes were investigated in radish. Radish of variety Punjab Safed Mooli 2 was harvested, washed and treated with CaCl 2 (1, 1.5 and 2%) or SA (1, 1.5 and 2 mM). Treated as well as untreated radish were placed in open trays and stored under refrigerated (5 ± 1 °C, 90% RH) conditions for 42 days. Treatment of radish with CaCl 2 and SA slowed down changes in physiological weight, colour, total soluble solids, ascorbic acid, titrable acidity, total phenolics and antioxidant activity. Treated samples exhibited higher enhancement in activities of antioxidant enzymes viz. catalase (CAT), superoxide dismutase (SOD), glutathione reductase (GR), peroxidase (POD), dehydroascorbate reductase (DHAR) and monodehydro-ascorbate reductase (MDHAR) than untreated samples. However SA was found to be more effective in slowing down the metabolic activities of radish as compared to CaCl 2 treatment. Among all the treatments, 1.5 mM SA maintained the quality parameters to greater extent probably by reducing the oxidative stress to larger extent due to highest activities of antioxidative enzymes and can be used to enhance the shelf life of radish during refrigerated storage.

  6. Effect of gamma irradiation and vapor gard on keeping quality of fuerte avocado fruits stored at temperature

    International Nuclear Information System (INIS)

    Awad, S.M.; Hassan, A.K.

    1993-01-01

    'Fuerte'avocado fruits, at mature stage, were treated after harvest by gamma rays and Vapor-Gard either alone or in combination, and stored at room temperature. Irradiation with 0.025 or 0.05 kGy increased loss of weight and decay percentage. However, fruit firmness, total carotenoids content, total phenolic compounds and total carbohydrates content were not affected. In all Vapor-Gard treatments at 0.5 or 1.0% either alone or combined with irradiation decreased the weight loss, decay percentage and total carotenoids content, but increased significantly each of fruit firmness, total phenols content and total carbohydrates content during storage periods. Avocados treated by Vapor-Gard at 0.5 or 1.0% alone or combined with irradiation delayed the ripening and extended shelf by 4 and 8 days respectively compared with those of the control or irradiated fruits which reached the fair quality after 8 days of storage. Concerning the changes in oil properties, it is noticed that, refractive index at 25 degree C and iodine value of avocado oil were not affected by treatments or storage periods, while storage periods caused a noticeable decrease in the free fatty acid percentage in all treatments and this reduction was greater in all Vapor-Gard treatments compared with the control.8 tab

  7. Diet composition and quality for Calanus finmarchicus egg production and hatching success off south-west Iceland

    DEFF Research Database (Denmark)

    Jonasdottir, Sigrun; Gudfinnsson, H.G.; Gislason, A.

    2002-01-01

    Egg production and hatching success of the copepod Calanus finmarchicus was measured during spring and summer in the waters south-west of Iceland. Egg-production rates varied greatly, both temporally and spatially, with highest average rates found at a station with low chlorophyll-a concentrations...

  8. Effect of feeding CLA on plasma and granules fatty acid composition of eggs and prepared mayonnaise quality.

    Science.gov (United States)

    Shinn, Sara Elizabeth; Proctor, Andrew; Gilley, Alex D; Cho, Sungeun; Martin, Elizabeth; Anthony, Nicholas B

    2016-04-15

    Eggs rich in trans, trans conjugated linoleic acid (CLA) are significantly more viscous, have more phospholipids containing linoleic acid (LA), and more saturated triacylglycerol species than control eggs. However, the fatty acid (FA) composition of yolk plasma and granule fractions are unreported. Furthermore, there are no reports of mayonnaise rheological properties or emulsion stability by using CLA-rich eggs. Therefore, the objectives were (1) compare the FA composition of CLA-rich yolk granules and plasma, relative to standard control and LA-rich control yolks, (2) compare the rheological properties of mayonnaise prepared with CLA-rich eggs to control eggs and (3) compare the emulsion stability of CLA-yolk mayonnaise. CLA-rich eggs and soy control eggs were produced by adding 10% CLA-rich soy oil or 10% of control unmodified soy oil to the hen's diet. The eggs were used in subsequent mayonnaise preparation. CLA-yolk mayonnaise was more viscous, had greater storage modulus, resisted thinning, and was a more stable emulsion, relative to mayonnaise prepared with control yolks or soy control yolks. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. Effect of modified atmosphere packaging on quality and shelf life of 'Robusta' banana (Musa sp.) stored at low temperature.

    Science.gov (United States)

    Kudachikar, V B; Kulkarni, S G; Prakash, M N Keshava

    2011-06-01

    Banana (Musa sp var. 'Robusta') stored under active and passive modified atmosphere packaging (MAP) at 12 ± 1°C and 85-90% RH for 2 seasons were evaluated for fruit quality and shelf-life. A steady state of about 8.6 and 8.2% of CO2 and 2.8 and 2.6% of O2 in passive MAP and MAP+GK (Green Keeper) packages, respectively, were established after 3 weeks of storage. Passive MAP and MAP+GK treatments of banana resulted in reduction in physiological loss in weight (PLW) of 0.7 and 0.8% after 5 and 7 weeks of storage, respectively as against 5% PLW in openly kept green banana after 3 weeks. Both MAP and MAP+GK treatments delayed colour, texture, pulp to peel ratio and total soluble solids (TSS) content as compared to openly kept control banana. Results indicated that the shelf life of fruits packed under MAP and MAP+GK could be extended up to 5 and 7 weeks, respectively as compared to 3 weeks for openly kept control fruits. Sensory quality of fully ripe fruits of both passive MAP and MAP+GK treatments, 5 days after ethrel dip was very good. Thus, MAP+GK at 12 ± 1°C and 85-90% RH could be commercially used for long term storage and long distance transportation of banana with maximum shelf-life of 7 weeks.

  10. Effects of Hen Age and Egg Weight Class on the Hatchability of Free Range Indigenous Chicken Eggs

    OpenAIRE

    Abudabos, AM; Aljumaah, RS; Algawaan, AS; Al-Sornokh, H; Al-Atiyat, RM

    2017-01-01

    ABSTRACT In total, 806 eggs of free-range Hassawi indigenous chickens were collected from local farm in Saudi Arabia. Eggs were weekly collected for 11 weeks. Initial egg weight (IEW) was recorded, and eggs were graded into four classes (A: 35-40 g, B: 40-45 g, C: 45-50 g, and D: 50-55 g). Eggs were stored for seven days at 75-80% relative humidity and 14-16 C, after which egg weight losses (WL0) were calculated. During incubation, eggs were weighed on days 7 (W7) and 14 (W14), and egg weight...

  11. Effect of γ-Aminobutyric Acid-producing Strain on Laying Performance, Egg Quality and Serum Enzyme Activity in Hy-Line Brown Hens under Heat Stress

    Directory of Open Access Journals (Sweden)

    Y. Z. Zhu

    2015-07-01

    Full Text Available Heat-stress remains a costly issue for animal production, especially for poultry as they lack sweat glands, and alleviating heat-stress is necessary for ensuring animal production in hot environment. A high γ-aminobutyric acid (GABA-producer Lactobacillus strain was used to investigate the effect of dietary GABA-producer on laying performance and egg quality in heat-stressed Hy-line brown hens. Hy-Line brown hens (n = 1,164 at 280 days of age were randomly divided into 4 groups based on the amount of freeze-dried GABA-producer added to the basal diet as follows: i 0 mg/kg, ii 25 mg/kg, iii 50 mg/kg, and iv 100 mg/kg. All hens were subjected to heat-stress treatment through maintaining the temperature and the relative humidity at 28.83±3.85°C and 37% to 53.9%, respectively. During the experiment, laying rate, egg weight and feed intake of hens were recorded daily. At the 30th and 60th day after the start of the experiment, biochemical parameters, enzyme activity and immune activity in serum were measured. Egg production, average egg weight, average daily feed intake, feed conversion ratio and percentage of speckled egg, soft shell egg and misshaped egg were significantly improved (p<0.05 by the increasing supplementation of the dietary GABA-producer. Shape index, eggshell thickness, strength and weight were increased linearly with increasing GABA-producer supplementation. The level of calcium, phosphorus, glucose, total protein and albumin in serum of the hens fed GABA-producing strain supplemented diet was significantly higher (p<0.05 than that of the hens fed the basal diet, whereas cholesterol level was decreased. Compared with the basal diet, GABA-producer strain supplementation increased serum level of glutathione peroxidase (p = 0.009 and superoxide dismutase. In conclusion, GABA-producer played an important role in alleviating heat-stress, the isolated GABA-producer strain might be a potential natural and safe probiotic to use to

  12. Effect of γ-Aminobutyric Acid-producing Lactobacillus Strain on Laying Performance, Egg Quality and Serum Enzyme Activity in Hy-Line Brown Hens under Heat Stress.

    Science.gov (United States)

    Zhu, Y Z; Cheng, J L; Ren, M; Yin, L; Piao, X S

    2015-07-01

    Heat-stress remains a costly issue for animal production, especially for poultry as they lack sweat glands, and alleviating heat-stress is necessary for ensuring animal production in hot environment. A high γ-aminobutyric acid (GABA)-producer Lactobacillus strain was used to investigate the effect of dietary GABA-producer on laying performance and egg quality in heat-stressed Hy-line brown hens. Hy-Line brown hens (n = 1,164) at 280 days of age were randomly divided into 4 groups based on the amount of freeze-dried GABA-producer added to the basal diet as follows: i) 0 mg/kg, ii) 25 mg/kg, iii) 50 mg/kg, and iv) 100 mg/kg. All hens were subjected to heat-stress treatment through maintaining the temperature and the relative humidity at 28.83±3.85°C and 37% to 53.9%, respectively. During the experiment, laying rate, egg weight and feed intake of hens were recorded daily. At the 30th and 60th day after the start of the experiment, biochemical parameters, enzyme activity and immune activity in serum were measured. Egg production, average egg weight, average daily feed intake, feed conversion ratio and percentage of speckled egg, soft shell egg and misshaped egg were significantly improved (pGABA-producer. Shape index, eggshell thickness, strength and weight were increased linearly with increasing GABA-producer supplementation. The level of calcium, phosphorus, glucose, total protein and albumin in serum of the hens fed GABA-producing strain supplemented diet was significantly higher (plevel was decreased. Compared with the basal diet, GABA-producer strain supplementation increased serum level of glutathione peroxidase (p = 0.009) and superoxide dismutase. In conclusion, GABA-producer played an important role in alleviating heat-stress, the isolated GABA-producer strain might be a potential natural and safe probiotic to use to improve laying performance and egg quality in heat-stressed hens.

  13. Effect of dietary energy and protein on the performance, egg quality, bone mineral density, blood properties and yolk fatty acid composition of organic laying hens

    Directory of Open Access Journals (Sweden)

    Md. Rakibul Hassan

    2013-02-01

    Full Text Available An experiment was conducted to evaluate the effect of dietary metabolizable energy (ME and crude protein (CP on the performance, egg quality, blood properties, bone characteristics and yolk fatty acid composition of organic laying hens. At 23 weeks, a total of 600 Brown nick laying hens were randomly distributed into 24 outdoor pens (4 replicate pens/treatment; 25 birds/pen and were given (2750, 2775 and 2800 kcal of ME/kg and CP (16 and 17% resulting in a 3×2 factorial arrangement of organic dietary treatments. The experiment lasted 23 weeks. The performance of laying hens were not affected by the dietary treatment while the egg weight was increased with energy and CP levels in the diet (P<0.05. Serum total protein was not affected by dietary energy and protein level. Total cholesterol and triglyceride tend to reduce with the increasing amount of CP in the diet. Thereafter, bone and egg quality characteristics were numerically increased in dietary 2775 kcal of ME/kg and 16% CP treatment. On the other hand, docosahexanoic acid content in egg yolk was higher (P<0.01 in 2750 kcal of ME/kg and 17% CP treatment. As a result, the performance, blood and fatty acid composition were maximized in 2750 kcal of ME/kg and 16% CP treatment. Thus, dietary 2750-2775 kcal of ME/kg and 16% CP may enhance performance, blood and fatty acid composition of organic laying hens.

  14. Effect of dietary γ-aminobutyric acid on laying performance, egg quality, immune activity and endocrine hormone in heat-stressed Roman hens.

    Science.gov (United States)

    Zhang, Min; Zou, Xiao-Ting; Li, Hui; Dong, Xin-Yang; Zhao, Wenjing

    2012-02-01

    This study was conducted to evaluate the effect of γ-aminobutyric acid (GABA) on laying performance, egg quality, digestive enzyme activity, hormone level and immune activities in Roman hens under heat stress. Roman hens (320 days old) were fed with 0, 25, 50, 75 and 100 mg/kg GABA, respectively during a 60-day experiment. Compared with control, supplementation of 50 mg/kg GABA improved the laying performance and egg quality by significantly increasing egg production, average egg weight and shell strength (P level. Anti-oxidation activity was improved by significantly increasing the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), but decreasing malondialdehyde level in serum (P level, follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E(2) ), insulin, triiodothyronine (T(3) ) and free triiodothyronine (FT(3) ) levels, and IgG, IgA and complement (C3)activity in serum (P GABA improved laying performance and physical condition mainly by modulating hormone secretion, enhancing anti-oxidation and immune activity, and maintaining electrolyte balance. Fifty mg/kg was the optimum level for laying hens under heat stress in the present study. © 2011 The Authors. Animal Science Journal © 2011 Japanese Society of Animal Science.

  15. Dietary inclusion of raw faba bean instead of soybean meal and enzyme supplementation in laying hens: Effect on performance and egg quality

    Directory of Open Access Journals (Sweden)

    M.E. Abd El-Hack

    2017-02-01

    Full Text Available An experiment was conducted with 160 Hisex Brown laying hens to evaluate the effect of different inclusion levels of faba bean (FB and enzyme supplementation on productive performance and egg quality parameters. The experimental diets consisted of five levels of FB: 0% (control, 25%, 50%, 75% and 100%, substituting soybean meal (SBM, and two levels of enzyme supplementation (0 or 250 mg/kg. Each dietary treatment was assigned to four replicate groups and the experiment lasted 22 weeks. A positive relationship (P  0.05. The main effect of FB levels replacing for SBM affected (P < 0.05 yolk and shell percentages, yolk index, yolk to albumen ratio, shell thickness and egg shape index. It can be concluded that FB and enzyme supplementation could be included in hens diet at less than 50% instead of SBM to support egg productive performance, however higher raw FB levels negatively affected egg production indices and quality.

  16. Comparative Effect of Dietary Soybean Oil, Fish Oil, and Coconut Oil on Performance, Egg Quality and Some Blood Parameters in Laying Hens.

    Science.gov (United States)

    Dong, X F; Liu, S; Tong, J M

    2018-04-14

    Two hundred and sixteen 28-wk-old Hy-line laying hens were randomly distributed to three dietary treatments and fed 1of 3 diets containing 8% soybean oil, fish oil, or coconut oil from 28 to 47 wk of age to investigate comparative effect of dietary soybean oil, fish oil, and coconut oil on the performance, egg quality and blood malondialdehyde (MDA), aspartate transaminase (AST) and uric acid (UA). Hens fed fish oil showed poor performance compared with soybean oil or coconut oil, and especially egg weight throughout the trial was significantly and consistently decreased (P oil. Unexpectedly, shell reflectivity throughout the majority of the trial was consistently and significantly higher (P oil than that when fed soybean oil or coconut oil. Dietary treatments affected (P oil treatment was higher (P oil group. Albumen height, Haugh unit and yolk color were influenced by dietary treatments only at 1 or 2 time points. However, average albumen height and Haugh unit in fish oil treatment were higher (P soybean oil or coconut oil treatments and average yolk color in coconut oil treatment was higher (P soybean oil group. Serum MDA, AST and UA concentrations were increased (P oil during the majority of the first 2 mo of the trial. These data suggested that the inclusion of fish oil into feed may reduce the performance of laying hens, especially the egg weight, decrease the intensity of egg brown color and increase blood MDA, AST and UA levels compared with soybean oil or coconut oil. As a result, hens fed fish oil may lay smaller, longer and lighter-brown eggs whereas those fed coconut oil produce blunter and darker-brown eggs relative to soybean oil.

  17. Neighborhood availability of convenience stores and diet quality: findings from 20 years of follow-up in the coronary artery risk development in young adults study.

    Science.gov (United States)

    Rummo, Pasquale E; Meyer, Katie A; Boone-Heinonen, Janne; Jacobs, David R; Kiefe, Catarina I; Lewis, Cora E; Steffen, Lyn M; Gordon-Larsen, Penny

    2015-05-01

    We examined the association between neighborhood convenience stores and diet outcomes for 20 years of the Coronary Artery Risk Development in Young Adults study. We used dietary data from the Coronary Artery Risk Development in Young Adults study years 1985-1986, 1992-1993, and 2005-2006 (n = 3299; Birmingham, AL; Chicago, IL; Minneapolis, MN; and Oakland, CA) and geographically and temporally matched neighborhood-level food resource and US Census data. We used random effects repeated measures regression to estimate associations between availability of neighborhood convenience stores with diet outcomes and whether these associations differed by individual-level income. In multivariable-adjusted analyses, greater availability of neighborhood convenience stores was associated with lower diet quality (mean score = 66.3; SD = 13.0) for participants with lower individual-level income (b = -2.40; 95% CI = -3.30, -1.51); associations at higher individual-level income were weaker. We observed similar associations with whole grain consumption across time but no statistically significant associations with consumption of sugar-sweetened beverages, artificially sweetened beverages, snacks, processed meats, fruits, or vegetables. The presence of neighborhood convenience stores may be associated with lower quality diets. Low-income individuals may be most sensitive to convenience store availability.

  18. High- but not low-intensity light leads to oxidative stress and quality loss of cold-stored baby leaf spinach.

    Science.gov (United States)

    Glowacz, Marcin; Mogren, Lars M; Reade, John P H; Cobb, Andrew H; Monaghan, James M

    2015-07-01

    Quality management in the fresh produce industry is an important issue. Spinach is exposed to various adverse conditions (temperature, light, etc.) within the supply chain. The present experiments were conducted to investigate the effect of light conditions (dark, low-intensity light (LL) and high-intensity light (HL)) and photoperiod (6 h HL and 18 h dark) on the quality changes of cold-stored spinach. HL exposure resulted in oxidative stress, causing tissue damage and quality loss as evidenced by increased membrane damage and water loss. The content of total ascorbic acid was reduced under HL conditions. On the other hand, storage of spinach under LL conditions gave promising results, as nutritional quality was not reduced, while texture maintenance was improved. No significant differences, with the exception of nutritional quality, were found between spinach leaves stored under continuous (24 h) low-intensity light (30-35 µmol m(-2) s(-1)) and their counterparts stored under the same light integral over 6 h (130-140 µmol m(-2) s(-1)). LL extended the shelf-life of spinach. The amount of light received by the leaves was the key factor affecting produce quality. Light intensity, however, has to be low enough not to cause excess oxidative stress and lead to accelerated senescence. © 2014 Society of Chemical Industry.

  19. Fontes de lipídios na dieta de poedeiras: desempenho produtivo e qualidade dos ovos Lipids sources on layer hen diet: performance and egg quality

    Directory of Open Access Journals (Sweden)

    D.D. Oliveira

    2010-06-01

    Full Text Available Os efeitos de fontes de lipídios na dieta de poedeiras sobre o desempenho produtivo e a qualidade do ovo foram verificados em dois experimentos. Foram utilizados quatro tratamentos, definidos de acordo com a fonte lipídica adicionada nas rações: óleo de soja, óleo de girassol, óleo de linhaça e ração controle (sem adição de óleo. Os experimentos foram realizados com poedeiras de 20 e 54 semanas de idade, respectivamente, com duração de oito semanas. Avaliaram-se os parâmetros produtivos - consumo de ração, conversão alimentar, produção e peso dos ovos - e de qualidade do ovo - porcentagens de gema, albúmen e casca, sólidos da gema, unidades Haugh, pH do albúmen, e cor da gema. Somente o peso do ovo de poedeiras jovens foi afetado pela inclusão de óleos vegetais na ração. Esses ovos apresentaram maior peso e maior porcentagem de gema que os produzidos pelas poedeiras jovens alimentadas com ração-controle. Concluiu-se que a utilização de diferentes fontes de lipídios na ração de poedeiras não altera o desempenho produtivo e a qualidade interna dos ovos, com exceção do peso do ovo de poedeiras novas, que aumenta com a utilização de óleos vegetais.The effects of different sources of fat in the diet of layer hens on performance and egg quality were recorded in two experiments. Four treatments were defined by the lipid source added to the diets: soybean oil, sunflower oil, linseed oil and control diet (without oil added. The experiments were carried out with layers from 20 to 54 weeks of age, respectively, for eight weeks. Production parameters (feed intake, feed conversion, egg production, and egg weight and quality of eggs (percentages of yolk, albumen, and shell; total solids of yolk; Haugh units; pH of albumen; and yolk color were evaluated. Among the parameters of production and quality of the eggs, only the weight of eggs and percentage of yolk of young hens were affected by the inclusion of vegetable

  20. Effects of two different rearing systems (organic and barn on production performance, animal welfare traits and egg quality characteristics in laying hens

    Directory of Open Access Journals (Sweden)

    Luigi Guidobono Cavalchini

    2010-01-01

    Full Text Available Alternative housing systems for hen eggs production represents clear evidence of the trend in animal housing and husbandry towards extensive rearing methods. Consumer demand is oriented towards healthy foods controlled not only under a safety point of view, but also under a welfare assessment of the animals’ living conditions. Among the different alternative systems deep litter and organic production in recent years have been improved in Italy. The aim of this study was to evaluate whether different housing systems (barn B and organic O for laying hens may influence productive performance, fear responses and egg quality characteristics. A total of 4,745 birds were housed in the B system and 2,016 in the O system, both of which were commercial facilities. In each system the same strain (Hy-Line Brown was housed and layer performance, external and internal egg characteristics, mortality and feed consumption were recorded weekly. Animal reactivity was recorded monthly with the approaching test. Moreover, the Tonic Immobility test was conducted at 70 weeks of age; feather and foot pad conditions were also investigated at the same time. The peak of laying was reached in both housing systems at 25 weeks of age and was higher in organic hens (94.5% than in barn hens (93.0%. Feed conversion rate during the overall laying period was 2.36 vs 2.20, respectively, in O and B housing systems. There was a significant difference concerning the eggs classified as very dirty, dirty and cracked between the two systems. The dirty eggs were higher in O system probably due to laying eggs in a free range area, while the higher number of cracked eggs in B system may be due to a significantly less shell thickness in this system. Egg weight increased with layer age in both housing systems. Animals reared in O system showed less fearfulness than in B emphasised by the approaching and Tonic Immobility test results. Feather scoring did not evidence any severe plumage

  1. Single and Combined Impacts of Vitamin A and Selenium in Diet on Productive Performance, Egg Quality, and Some Blood Parameters of Laying Hens During Hot Season.

    Science.gov (United States)

    Abd El-Hack, Mohamed E; Mahrose, Khalid; Askar, Ali A; Alagawany, Mahmoud; Arif, Muhammad; Saeed, Muhammad; Abbasi, Farzana; Soomro, Rab Nawaz; Siyal, Farman Ali; Chaudhry, Maria Tabassum

    2017-05-01

    A study was conducted using 162 Bovans laying hens to investigate the impacts of extra dietary vitamin A (0, 8000, 16,000 IU/kg), selenium (0, 0.25, 0.50 mg/kg), and their combinations on the performance, egg quality, and blood biological parameters of laying hens during summer months. Supplemental vitamin A up to 16,000 IU/kg diet significantly (P feed intake which increased with 8000 IU/kg diet compared with control. Feed intake and feed conversion of hens fed diet supplemented with selenium revealed high statistical (P = 0.001) differences. All egg quality criteria were not significantly (P hens reared under heat stress conditions.

  2. "The Virtual Grocery Store: A Proposal to Improve the Quality of Life for Retail Customers through a Virtual Environment"

    OpenAIRE

    Choi, Katrina Jones

    2004-01-01

    With the prevalence and integration of the Internet in our lives, online shopping has become a popular and convenient method of obtaining goods. However, there is an important experience that occurs between the customer and the product as well as the customer and the space in the actual, physical store which does not yet occur in the virtual store (Raijas, 2002). Customersâ increased use of new technology and the Internet illustrates that an incredible growth potential exists in the elect...

  3. Effect of feed grinding methods with and without expansion on prececal and total tract mineral digestibility as well as on interior and exterior egg quality in laying hens.

    Science.gov (United States)

    Hafeez, A; Mader, A; Ruhnke, I; Männer, K; Zentek, J

    2016-01-01

    The grinding of cereals by various milling methods as well as thermal treatment of feed may influence mineral digestibility and egg quality. The present study investigated the effect of feed produced by disc mill (D) and wedge-shaped disc mill (WSD), as mash (M) or expandate (E) on apparent ileal absorption (AIA) and apparent total digestibility (ATD) of calcium, phosphorus, magnesium, zinc, manganese, copper and iron, as well as on egg quality in laying hens. A total of 192 hens (Lohmann Brown) aged 19 wk, were assigned using a randomized design with a 2 × 2 factorial arrangement. Four experimental diets were offered ad libitum. Eggs were analyzed for weight, shape index, area, shell weight per unit surface area, yolk color, air cell, blood spot, Haugh unit, albumen and yolk measures (index, weight, height, width and length), shell measures (surface area, stability, density, thickness and membrane weight), as well as percent contents of albumen, yolk, shell, and shell membrane. The ATD for phosphorus, manganese, and copper was higher in WSD compared with D treatment (P = 0.028, P = 0.028 and P = 0.016, respectively). The interaction between milling methods and thermal treatment influenced ATD of copper (P = 0.033), which was higher in WSD+M group (41.0 ± 20.2) compared with D+E group (-3.21 ± 25.1), whereas no differences were observed for D+M (1.90 ± 37.8) and WSD+E (8.02 ± 36.2) groups. Egg stability tended to be higher in E compared with M treatment (P = 0.055). Albumen weight, percentage albumen weight, and albumen: yolk were higher and percentage yolk weight was lower in D compared with WSD treatment (P = 0.043, P = 0.027, P = 0.024, and P = 0.041, respectively). Number of blood spots was higher in E than M treatment (P = 0.053). In conclusion, use of a wedge-shaped disc mill resulted in higher ATD for phosphorus, manganese, and copper than use of a disc mill; however, digestibility for majority of minerals as well as egg quality parameters was

  4. INFLUENCE OF ASCORBIC ACID ON EGG QUALITY INFLUÊNCIA DO ÁCIDO ASCÓRBICO NA QUALIDADE DO OVO

    Directory of Open Access Journals (Sweden)

    Pedro Alves de SOUZA

    2001-12-01

    Full Text Available The egg quality may be influenced by some nutrients added to laying hens diets and among these nutrients, the ascorbic acid is included. According to some researches, this acid, besides of improving the quality, it can increase the egg production and weight. In addition, it reduces the quantity of cracked eggs and food intake. In order to contribute with more information, this experiment was developed. Concentrations of 100; 150 and 200mg/kg of ascorbic acid were added to rations of laying hens during 60 days, with the objective of determining the influence of ascorbic acid on the quality of eggs kept under room temperature conditions (26.7 ± 2.2°C and 60 ± 5% moisture for a period of 28 days. A total of 1440 eggs were used, being 720 of white shell and 720 of brown shell. Egg quality was determined by Haugh unit and yolk index, every 7 days. The obtained results allowed to conclude that ascorbic acid, independent on the level of supplementation, was not enough to decrease.A qualidade dos ovos pode ser influenciada por alguns nutrientes adicionados à dieta das aves e entre esses nutrientes se inclui o ácido ascórbico, que segundo alguns pesquisadores, além de melhorar a qualidade, pode aumentar a produção e o peso dos ovos e diminuir a quantidade de ovos trincados e o consumo de ração. Com a finalidade de tentar contribuir com mais algumas informações, desenvolveu esse experimento com o objetivo de avaliar a influência do ácido ascórbico sobre a qualidade de ovos brancos e marrons mantidos sob condições de ambiente (26,7 ± 2,2°C e 60 ± 5%UR, por um período de 28 dias. Foram utilizados 1440 ovos, sendo 720 de casca branca e 720 de casca marrom. Foram adicionadas à ração de aves, durante 60 dias, concentrações de 100, 150 e 200mg/kg de ácido ascórbico. A qualidade dos ovos foi determinada de 7 em 7 dias, avaliando-se a unidade Haugh e o índice gema. Os dados obtidos permitiram concluir que a suplementação com o

  5. Effect of pigpel extender on the boar semen quality stored at different temperatures / Efeito do diluente pigpel na qualidade do sêmen suíno refrigerado em diferentes temperaturas

    Directory of Open Access Journals (Sweden)

    Márcio Nunes Corrêa

    2009-12-01

    Full Text Available This study aim to evaluate the quality of boar semen stored at different temperatures and media on PIGPEL5 extender, using egg yolk as an external membrane protector, and on PIGPEL5Plus, containing low density lipoprotein (LDL as protector. In the experiment 1, the semen doses were stored in a semen container at 5 and 17 °C and the results were compared with semen stored at 17 °C in BTS extender. In the experiment 2, the doses with the PIGPEL5 and PIGPEL5Plus extenders were stored in a commercial refrigerator and in semen container, both at 5 °C. The use of extenders with extracellular cryoprotectant (PIGPEL5 e PIGPEL5Plus showed higher (p 0.05 in the motility, membrane integrity and morphology for the substitution of egg yolk (PIGPEL5 for LDL (PIGPEL5Plus. In experiment 2, also there was no difference (p > 0.05 in motility, membrane integrity and morphology between extenders and type of container until 72 h. The conservation of semen on PIGPEL5 extender and commercial refrigerator (5 ºC allowed patterns of sperm quality according recommended for AI.Este estudo avaliou a qualidade do sêmen suíno preservado em diferentes temperaturas e meios de conservação no diluente PIGPEL5, utilizando gema de ovo como protetor externo de membrana, e no diluente PIGPEL5Plus, utilizando lipoproteína de baixa densidade (LDL como protetor. No experimento 1, as doses de sêmen foram conservadas em refrigerador de sêmen a 5 e 17 °C nos diluentes PIGPEL5 e PIGPEL5Plus e comparadas ao diluente BTS a 17 °C. Já no experimento 2, foi comparada a conservação do sêmen nos diluentes PIGPEL5 e PIGPEL5Plus em geladeira convencional ou em refrigerador de sêmen a 5 ºC. Observou-se que o uso de diluidores com crioprotetor extracelular (PIGPEL5 e PIGPEL5Plus apresentou maiores (p 0,05 na motilidade, integridade de membrana e morfologia para a substituição da gema de ovo (PIGPEL5 pela LDL (PIGPEL5Plus. No experimento 2, também não houve diferença na

  6. The influence of Blue mussel (Mytilus edulis) and Starfish (Asterias rubens) meals on production performance, egg quality and apparent total tract digestibility of nutrients of laying hens

    DEFF Research Database (Denmark)

    Afrose, Sadia; Hammershøj, Marianne; Nørgaard, Jan Værum

    2016-01-01

    The aim of the study was to evaluate mussel meal and starfish meals as protein sources for organic layers by studying the effect on production performance, nutrient digestibility and egg quality. A total of 300 Hisex white laying hens (20-week old) were distributed randomly to 6 dietary treatment....... The egg weight was not different from the egg weights of control diets, but the inclusion of 4 g mussel meal resulted in a lower (P colour was lower (P ... 100 g feed can be used in diets as a high quality protein source for egg production. These meals can replace fish meal; however, an inclusion level higher than 8 g/100 g of mussel or starfish meal may result in a fishy smell of the eggs....

  7. Egg Allergy

    Science.gov (United States)

    ... with eggs. Prevention is the name of the game with food allergies, so it's important for kids ... protein from other foods. Some good ones are meat, poultry, fish, and legumes (beans and peanuts). If ...

  8. Comparison of boiling and chlorination on the quality of stored drinking water and childhood diarrhoea in Indonesian households.

    Science.gov (United States)

    Fagerli, K; Trivedi, K K; Sodha, S V; Blanton, E; Ati, A; Nguyen, T; Delea, K C; Ainslie, R; Figueroa, M E; Kim, S; Quick, R

    2017-11-01

    We compared the impact of a commercial chlorination product (brand name Air RahMat) in stored drinking water to traditional boiling practices in Indonesia. We conducted a baseline survey of all households with children 1000 MPN/100 ml (RR 1·86, 95% CI 1·09-3·19) in stored water than in households without detectable E. coli. Although results suggested that Air RahMat water treatment was associated with lower E. coli contamination and diarrhoeal rates among children water treatment by boiling, Air RahMat use remained low.

  9. Effects of inverting the position of layers eggs during storage on hatchery performance parameters

    Directory of Open Access Journals (Sweden)

    JCS de Lima

    2012-12-01

    Full Text Available Storing hatchable eggs is a common practice in commercial hatcheries. However, storage time may negative effects on several performance parameters. An experiment was carried out to evaluate inverting egg position during storage of eggs laid by young and old layer breeders. Fertile eggs of 32 and 58-week-old breeders were stored for seven, 14, and 21 days at 18ºC ± 2ºC and 80% ± 10% relative humidity (RU. The following parameters were evaluated: egg weight loss, hatchability and hatchling weight, and embryodiagnosis results. Eggs stored with the small end up lost less weight during storage compared with the control eggs. Storing eggs for 14 days with the small end up reduced early embryo mortality, improving hatchability. In addition, hatchling weight increased. These results show that the detrimental effects of long storage periods may be alleviated when eggs are stored with the small end up to 14 days of storage.

  10. Effect of Dietary L-ascorbic Acid (L-AA on Production Performance, Egg Quality Traits and Fertility in Japanese Quail ( at Low Ambient Temperature

    Directory of Open Access Journals (Sweden)

    N. Shit

    2012-07-01

    Full Text Available Environmental stress boosts the levels of stress hormones and accelerates energy expenditure which subsequently imbalance the body’s homeostasis. L-ascorbic acid (L-AA has been recognized to mitigate the negative impact of environmental stress on production performances in birds. The present investigation was carried out to elucidate the effect of different dietary levels of L-AA on production performance, egg quality traits and fertility in Japanese quail at low ambient temperature. Sixty matured females (15 wks were equally divided into three groups (20/group based on the different dietary levels of L-AA (0, 250 and 500 ppm and coupled with an equal number of males (1:1 obtained from the same hatch. They were managed in uniform husbandry conditions without restriction of feed and water at 14 h photo-schedule. Except for feed efficiency, body weight change, feed consumption and hen-day egg production were recorded highest in 500 ppm L-AA supplemented groups. Among the all egg quality traits studied, only specific gravity, shell weight and thickness differed significantly (p<0.05 in the present study. Fertility was improved significantly (p<0.01 to a dose dependent manner of L-AA. The findings of the present study concluded that dietary L-AA can be a caring management practice at least in part to alleviate the adverse effect of cold induced stress on production performance in Japanese quail.

  11. Effects of parenteral gibberellic acid and dietary supplementaion of vitamin D3 on egg quality and physiological characteristics in aged laying hens

    Directory of Open Access Journals (Sweden)

    Waleed M. Razuki

    2014-12-01

    Full Text Available The aim of this study was to determine the effect of parenteral gibberellic acid (GA3 and/or vitamin D3 supplementation in diet on egg quality and blood physiological characteristics in aged laying hens. A total of 270 Lohmann Brown Classic laying hens aging 73-week were randomly assigned to equal three treatment groups (T1, T2 and T3 with equal 3 replicas in each group. The birds of group T1 (control group were injected subcutaneously (SC with sesame oil at 0.2 mL/kg body weight. The birds of group T2 were given with GA3 at 400 µg/kg b.wt., SC, whereas group T3 had diet containing vitamin D3 at 500 IU/kg feed. Relative weight of albumen and egg shell, Haugh unit, shell thickness, serum glucose, serum calcium, serum phosphorous, serum estradiol, and bone calcium absorption were significantly increased in the birds of group T2 and T3. On the other hand, relative weight of yolk, yolk cholesterol, and serum cholesterol were significantly decreased in group T2 and T3 as compared to group T1. However, serum protein and albumen were unaffected in the treatments. In conclusion, the parenteral GA3 and vitamin D3 supplementation in diet could improve egg quality traits and serum blood biochemical perperties in agend laying hens.

  12. Using a feed-grade zinc propionate to achieve molt induction in laying hens and retain postmolt egg production and quality.

    Science.gov (United States)

    Park, S Y; Kim, W K; Birkhold, S G; Kubena, L F; Nisbet, D J; Ricke, S C

    2004-11-01

    A commercial-feed-grade form of zinc propionate was examined as a potential feed amendment at a concentration of 1% zinc to induce molt in 90-wk-old hens. Dietary treatments consisted of 4 treatment groups of 28 birds each randomly assigned to either (1) molted conventionally by feed withdrawal, (2) 1% zinc as Zn acetate, (3) 1% zinc as Zn propionate, or (4) nonmolted control for 9 d. Ovary weights of hens fed Zn acetate or Zn propionate were not significantly different from each other, but hens fed Zn acetate or Zn propionate were significantly (phens. Zinc concentrations in the kidney and liver were significantly (phens when compared to either nonmolted control-fed hens or feed-withdrawal molted hens. Over the entire 3-mo postmolt period, there were no significant differences in interior or exterior egg qualities among the four treatments. Egg production of hens fed Zn acetate was significantly lower than feed-withdrawal hens, Zn propionate-fed hens, or nonmolted control hens (pfeeding a feed grade of Zn propionate (1% Zn)-supplemented diet can induce molt and retain postmolt egg quality and production comparable to hens molted by feed withdrawal.

  13. Cooking quality properties and free and bound phenolics content of brown, black, and red rice grains stored at different temperatures for six months.

    Science.gov (United States)

    Ziegler, Valmor; Ferreira, Cristiano Dietrich; Hoffmann, Jessica Fernanda; Chaves, Fábio Clasen; Vanier, Nathan Levien; de Oliveira, Maurício; Elias, Moacir Cardoso

    2018-03-01

    The changes in cooking quality and phenolic composition of whole black and red rice grains stored during six months at different temperatures were evaluated. Brown rice with known cooking quality properties and low phenolic levels was used for purposes comparison. All rice genotypes were stored at 13% moisture content at temperatures of 16, 24, 32, and 40°C. Cooking time, hardness, free and bound phenolics, anthocyanins, proanthocyanidins, and free radical scavenging capacity were analysed. The traditional rice with brown pericarp exhibited an increase in cooking time and free phenolics content, while rice with black pericarp exhibited a reduction in cooking time after six months of storage at the highest studied temperature of 40°C. There as increases in ferulic acid levels occurred as a function of storage temperature. Red pericarp rice grains showed decreased antioxidant capacity against ABTS radical for the soluble phenolic fraction with increased time and storage temperature. Copyright © 2017 Elsevier Ltd. All rights reserved.

  14. Microbiological quality of maatjes herring stored in air and under modified atmosphere at 4 and 10 C

    NARCIS (Netherlands)

    Lyhs, U.; Lahtinen, J.; Schelvis-Smit, A.A.M.

    2007-01-01

    Microbiological and sensory changes of maatjes herring stored in air (experiment I) and under modified atmosphere (MAP) (experiments II and III) were evaluated during storage at 4 and 10 °C. Microbial (total and psychrotrophic viable bacteria, lactic acid bacteria and Enterobacteriaceae) counts and

  15. Investigation on the effects of dietary protein reduction with constant ratio of digestible sulfur amino acids and threonine to lysine on performance, egg quality and protein retention in two strains of laying hens

    Directory of Open Access Journals (Sweden)

    Farhad Foroudi

    2013-01-01

    Full Text Available An experiment was conducted to determine the possibility of using various levels of crude protein (CP by providing laying hens with constant levels of digestible sulfur amino acid, threonine and lysine to improve performance and egg quality. The experiment was conducted as a completely randomized block design in a factorial arrangement (4 × 2 with 8 replicates of 10 hens in each. Factors included 4 levels of CP (18.5%, 17.5%, 16.5% and 15.5% and 2 strains (LSL and Hy-Line W-36 of laying hens. Hens were fed experimental diets from 25 to 33 weeks of age. Production performance was measured for eight weeks and egg quality characteristics were determined at 29 and 33 weeks of age. Protein reduction decreased egg weight, egg mass and hen body weight linearly (P≤0.01. Egg production was not affected by protein reduction but feed efficiency, and average daily feed intake increased significantly (P≤0.01. Lohmann Selected Leghorn laying hens showed significantly higher egg production, egg weight, egg mass, weight gain, feed efficiency and feed intake compared to the W-36 laying hens (P≤0.01. Shell thickness increased linearly as protein levels decreased (P≤0.05. There were significant differences between two strains on the egg quality characteristics (P≤0.01. Significant (P≤0.05 CP × strain interactions were observed for hen weight, albumen height, Haugh units, yolk and shell percentage. Based on the results of this experiment, a reduction in dietary protein level (from 18.5% to 15.5%, without any alteration in digestible TSAA and Thr: Lys ratio, led to inferior egg mass and feed conversion ratio during the peak production period.

  16. Calidad postcosecha de tomates almacenados en atmósferas controladas Postharvest quality of tomato fruits stored under controlled atmospheres

    Directory of Open Access Journals (Sweden)

    Perla A. Gómez

    2002-03-01

    maturity stages and, at the same time, affecting their quality. The effects of controlled atmospheres were studied (low oxygen concentrations and free of carbon dioxide and ethylene, on color, firmness and the main components of tomato fruit taste, cv. Diva. On April 1998, fruits harvested at the turning stage (USDA in INTA Balcarce (Argentina were stored in 3 L hermetic flasks at 12ºC during 36 days. The experimental design was completely randomized with three replications. Each flask containing four fruits was considered as the experimental unit. Treatments were four, a flow through system of: a 1%, b 3%, c 5% and d 21% (check of oxygen balanced with nitrogen to 100%. Color, measured with a colorimeter, changed more slowly and firmness remained higher with decreasing oxygen concentrations. The final color of fruits at 5% O2 was the same as those from check fruits. Fruits from the treatment 3% reached the optimum color only when transferred to 20ºC, while those stored at 1% did not reach a normal color. On the other side, and in all the treatments, soluble solids and titratable acidity were lower and pH was higher than those at the beginning. Color and firmness preferred by the consumers (Color index » 12 and firmness » 65 KPa were reached after 7-day storage at 21% O2, 12 days at 5%, 14 days at 3% and 21 days at 1% according to decreasing values of the soluble solids/titratable acidity ratio. This would indicate that fruits externally alike could have different organoleptic properties. Effects observed could be related to both the low oxygen levels and the absence of ethylene.

  17. Ensaios de penetração de Salmonella Enteritidis em ovos de galinha com diferentes qualidades de casca, submetidos ou não a lavagem industrial e a duas temperaturas de armazenagem Penetration of Salmonella Enteritidis in chicken eggs, comparing different shell quality, industrial washing and temperature of storage

    Directory of Open Access Journals (Sweden)

    A.T. Pinto

    2009-10-01

    Full Text Available Estudou-se o comportamento da Salmonella Enteritidis quando em contato com a superfície de ovos de consumo, classificados de acordo com a qualidade da casca ou com tratamentos (lavados ou não, usando fezes de aves como veículo de contaminação, e armazenados a 8°C e 70% de umidade relativa ou a 30°C e 90% de umidade relativa. A 8°C, o microrganismo permaneceu viável na superfície dos ovos, ao longo do tempo, enquanto a 30°C foi possível identificar a sua inibição e até sua eliminação da superfície. A contaminação do conteúdo de ovos com defeito de casca foi mais frequente quando os ovos foram submetidos a temperaturas inadequadas de armazenagem (30°C.Salmonella Enteriditis behavior was studied when present on the surface of consume eggs, classified according to the shell quality or treatments (washed or not. Stools of fowls were used as a vehicle for contamination. The eggs were stored at 8°C and 70% relative humidity or at 30°C and 90% of relative humidity. At 8°C, the microorganism stayed viable on the surface of the eggs throughout the study, while at 30°C it was inhibited and eliminated from the egg shell. The contamination of content of the eggs with shell defect was more frequent when they were submitted to inappropriate temperatures of storage (30°C.

  18. Qualidade de mangas 'Tommy Atkins' armazenadas sob atmosfera modificada Quality of 'Tommy Atkins' mangoes stored under modified atmosphere

    Directory of Open Access Journals (Sweden)

    Elisangela Marques Jeronimo

    2007-08-01

    Full Text Available Objetivou-se com este trabalho avaliar a qualidade pós-colheita de mangas 'Tommy Atkins', durante o armazenamento refrigerado, utilizando diferentes tipos de embalagens. Os tratamentos foram: frutos acondicionados individualmente em bandejas de acetato transparente, revestidas com filme plástico de cloreto de polivinila (PVC esticável de 14 µm, sem e com sachê de permanganato de potássio, preparado utilizando-se vermiculita como substrato, impregnada com KmnO4 (10 g / 500 g de fruto; frutos acondicionados individualmente em sacos plásticos de polietileno de baixa densidade 25 µm de parede simples (PE confeccionado ou não com permanganato de potássio e frutos acondicionados, em grupos de 5, em caixas de papelão com tampa, revestidas internamente ou não, com filme plástico confeccionado com permanganato de potássio. Os frutos foram armazenados a 13 ± 1°C, 85-90% UR por 20 dias e então transferidos para as condições de ambiente de 24,4 °C, 70% UR. Foram avaliadas a perda de massa fresca, aparência, firmeza da polpa, teor de sólidos solúveis, acidez titulável e ácido ascórbico. Verificou-se que o melhor tratamento de atmosfera modificada foi o de acondicionamento individual dos frutos de manga em bandejas de acetato transparentes, recoberta com o filme de PVC esticável. O permanganato de potássio na forma utilizada neste estudo (sachê e impregnado em filme plástico não interferiu nos resultados obtidos para a conservação dos frutos.The objective of this experiment was to evaluate the post harvest quality of 'Tommy Atkins' mangoes during refrigerated storage, using different types of packing. The modified atmosphere corresponded to the following treatments: fruits conditioned individually in plastic trays, covered with plastic film of polivinil chloride (PVC of 14 µm, without and with sachet of potassium permanganate (10 g; fruits conditioned individually in low density simple wall polyethylene bag of 25 µm made

  19. Prediction of egg freshness during storage using electronic nose.

    Science.gov (United States)

    Yimenu, Samuel M; Kim, J Y; Kim, B S

    2017-10-01

    The aim of the present study was to investigate the potential of a fast gas chromatography (GC) e-nose for freshness discrimination and for prediction of storage time as well as sensory and internal quality changes during storage of hen eggs. All samples were obtained from the same egg production farm and stored at 20 °C for 20 d. Egg sampling was conducted every 0, 3, 6, 9, 12, 16, and 20 d. During each sampling time, 4 egg cartons (each containing 10 eggs) were randomly selected: one carton for Haugh units, one carton for sensory evaluation and 2 cartons for the e-nose experiment. The e-nose study included 2 independent test sets; calibration (35 samples) and validation (28 samples). Every sampling time, 5 replicates were prepared from one egg carton for calibration samples and 4 replicates were prepared from the remaining egg carton for validation samples. Sensors (peaks) were selected prior to multivariate chemometric analysis; qualitative sensors for principal component analysis (PCA) and discriminant factor analysis (DFA) and quantitative sensors for partial least square (PLS) modeling. PCA and DFA confirmed the difference in volatile profiles of egg samples from 7 different storage times accounting for a total variance of 95.7% and 93.71%, respectively. Models for predicting storage time, Haugh units, odor score, and overall acceptability score from e-nose data were developed using calibration samples by PLS regression. The results showed that these quality indices were well predicted from the e- nose signals, with correlation coefficients of R2 = 0.9441, R2 = 0.9511, R2 = 0.9725, and R2 = 0.9530 and with training errors of 0.887, 1.24, 0.626, and 0.629, respectively. As a result of ANOVA, most of the PLS model results were not significantly (P > 0.05) different from the corresponding reference values. These results proved that the fast GC electronic nose has the potential to assess egg freshness and feasibility to predict multiple egg freshness indices

  20. Influence of in ovo mercury exposure, lake acidity, and other factors on common loon egg and chick quality in Wisconsin

    Science.gov (United States)

    We conducted a field study in Wisconsin to characterize in ovo mercury (Hg) exposure in common loons (Gavia immer). Total Hg mass fractions ranged from 0.17 to 1.23 ìg/g wet weight (ww) in eggs collected from nests on lakes representing a wide range of pH (5.0 - 8.1) and ...

  1. Effect of Egg Orientation on Malposition in Hatching Eggs

    Directory of Open Access Journals (Sweden)

    İsmail Durmuş

    2015-09-01

    Full Text Available This research was conducted to determine the effects of orientation in the hatching eggs on hatching results and position disorders, so the eggs were placed in incubator for 3 groups as orientation of normal, horizontal and small end up. In this study, 1680 hatching eggs were divided into 3 groups with 7 replicates of 80 eggs in each. Hatchability of fertile eggs, malformation ratio, malposition ratio, weight loss ratio, chick quality, embryo death ratios in the early, middle and late stage of embriogenesis and mortality ratio were investigated in this research. There were significant differences among the groups in terms of egg weight loss ratio, embryo death in the late stage of embriogenesis, malposition ratio, hatching rate , whereas no significant differences among the groups in respect to malformation ratio, chick quality, embryo death in early and late embriogenesis. It was determined that the late embrionic mortality increased because of the position errors in case of hatching eggs orientation and the head of the embryo in small end up of eggs.

  2. Microbial quality of soft drinks served by the dispensing machines in fast food restaurants and convenience stores in Griffin, Georgia, and surrounding areas.

    Science.gov (United States)

    Park, Yoen Ju; Chen, Jinru

    2009-12-01

    This study was undertaken to evaluate the microbial quality of the soft drinks served by fast food restaurants and gas station convenience stores in Griffin, GA, and surrounding areas. The soft drinks were collected from the dispensing machines in 8 fast food restaurants or gas station convenience stores in 2005 (n = 25) and in 10 fast food restaurants or gas station convenience stores in 2006 (n = 43) and 2007 (n = 43). One hundred milliliters of each soft drink was filtered through a hydrophobic grid membrane filter. The remaining portion of the soft drink was kept at room temperature for 4 h before sampling in order to mimic the possible holding time between purchase and consumption. The membrane filters were sampled for total aerobic bacteria, Enterobacteriaceae, lactic acid bacteria, and yeasts and molds. The microbial counts in the 2006 samples were numerically higher than the counts in the 2007 samples except for the average lactic acid bacteria counts, and were either significantly or numerically higher than the counts in the 2005 samples. Soft drinks sampled after the 4-h holding period had relatively higher counts than those sampled initially, with a few exceptions. Some soft drinks had over 4 log CFU/100 ml of total aerobic bacteria, Enterobacteriaceae, lactic acid bacteria, and yeast and mold cells. The study revealed the microbial quality of soft drinks served by dispensing machines in Griffin, GA, and surrounding areas, emphasizing the importance of effective sanitizing practice in retail settings.

  3. Pasture, multi-enzymes, benzoic acid and essential oils positively influence performance, intestinal organ weight and egg quality in free-range laying hens.

    Science.gov (United States)

    Iqbal, Z; Roberts, J; Perez-Maldonado, R A; Goodarzi Boroojeni, F; Swick, R A; Ruhnke, I

    2018-04-01

    1. The objective of this study was to investigate the effect of range type, multi-enzyme applications, and a combination of benzoic acid (BA) and essential oils (EO) on the productive performance, organ weight and egg quality of free-range laying hens. 2. Three hundred laying hens were evaluated for the short-term (6 weeks) and long-term (12 weeks) effects of range type (G = no pasture, P = pasture) and feed additives (T1 = control; T2 = betaglucanase/pectinase/protease; T3 = BA/EO). Body weight, feed intake (FI), feed conversion ratio (FCR), egg production (EP), digestive organ weight, and egg quality (EQ) were evaluated. Data were analysed using SPSS 2.2 in a 2×2×3 factorial arrangement. 3. Hens that ranged on pasture were significantly heavier (2043 g vs. 1996 g; p ranged on gravel. Hens fed T2 were significantly heavier (2050 g) compared to hens fed T1 (2005 g) or T3 (2008 g). Organ weights (gizzard, liver and pancreas) were significantly heavier in hens ranged on pasture (16.8 g/kg BW, 22.3 g/kg BW and 1.89 g/kg BW, respectively) compared to hens ranged on gravel (14.2 g/kg BW, 21.7 g/kg BW and 1.83 g/kg BW, respectively). Over time, body weight (1970-2070 g; p < 0.001) and egg weight (59.5-62.8 g; p < 0.001) increased, FI (123-120 g; p = 0.024) was reduced and FCR (2.36-2.10; p = 0.002) improved 4. In conclusion, hens housed on pasture and fed multi-enzyme supplemented diets had significantly heavier body weight and produced heavier eggs with darker yolk colour. Pasture intake and enzyme supplementation increased digestive organ weight significantly.

  4. Surveillance of Salmonella enteritidis in layer houses: a retrospective comparison of the Food and Drug Administration's egg safety rule (2010-2011) and the California Egg Quality Assurance Program (2007-2011).

    Science.gov (United States)

    Pitesky, Maurice; Charlton, Bruce; Bland, Mark; Rolfe, Dan

    2013-03-01

    Between July 2007 and December 2011, 2660 environmental drag swab samples were collected in total from California layer flocks on behalf of the California Egg Quality Assurance Program (CEQAP), the egg safety rule (21 CFR Parts 16 and 118) of the Food and Drug Administration (FDA), or both. The samples were processed by the California Animal Health and Food Safety Lab, and positive or negative results for Salmonella enterica serovar Enteritidis (SE) were recorded. This study retrospectively compares the differences between the FDA and CEQAP programs with respect to their SE environmental sampling surveillance results. To accomplish this comparison, two different CEQAP (new and old) data sets representing different SE environmental surveillance approaches in the life of the flock were compared against each other and against the FDA's SE environmental testing plan. Significant differences were noted between the CEQAP and FDA programs with respect to the prevalence of SE in the farm environment. Analyses of the prevalence of SE at different stages in the flock's life cycle (chick papers, preproduction, midproduction, postmolt, and premarket) found the highest prevalence of SE in premarket (11.9%), followed by postmolt (3.5%) and midproduction (3.4%), and there was a tie between chick papers and preproduction (2.1%). To assess the main effects of the presence of SE in the farm environment, backwards binary logistic regression was used. Of six independent variables examined (age of flock, year, season, owner, CEQAP membership, and analysis of pooled samples vs. individual swabs), only age of flock, owner, and year were determined to be significant factors in the final model. Although CEQAP membership and pooling vs. individuals swabs were not included in the final model, Pearson chi-square tests did show significantly higher odds of SE for non-CEQAP member farms and higher odds of SE in pooled samples vs. individual swabs.

  5. The effects of boron supplementation of layer diets varying in calcium and phosphorus concentrations on performance, egg quality, bone strength and mineral constituents of serum, bone and faeces.

    Science.gov (United States)

    Küçükyilmaz, K; Erkek, R; Bozkurt, M

    2014-01-01

    1. A 2 × 3 factorial arrangement of treatments was used to investigate the effects of dietary calcium (Ca), phosphorus (P), and supplemental boron (B) (0, 75, and 150 mg/kg) on the performance, egg quality, bone strength, and mineral constituents in bone, serum and faeces. 2. A reduction by 18% in the dietary Ca-P concentration from the recommended levels for the hen strain reduced (P properties did not corroborate the hypothesis that B is a trace element playing an important role in mineral metabolism and bone strength through an interaction with Ca, P and Mg.

  6. Quality changes in refrigerated stored minced pork wrapped with plastic cling film and the effect of glucose supplementation.

    Science.gov (United States)

    Del Blanco, Alba; Caro, Irma; Quinto, Emiliano J; Mateo, Javier

    2017-04-01

    Meat spoilage greatly depends on meat composition and storage conditions. Microbial and biochemical changes in minced pork (100-g portions) wrapped with a polyvinyl chloride film during a 4-day refrigerated storage were studied. As glucose is the first substrate used by spoilage bacteria and when it is depleted bacteria could generate undesirable volatiles, the effect of the addition of glucose to minced meat was also studied. Three treatments were used: control (C), without added glucose, and low and high glucose concentration (L and H), 150mg and 750mg of glucose in 100g of meat, respectively. Spoilage bacteria, pH, redox potential, colour, basic volatile nitrogen, glucose, organic acids, and volatiles were analyzed in both recently prepared and stored pork samples. Storage resulted in increased levels of lactic acid bacteria and glucose-derived short chain alkyl volatiles, and a decrease in redox potential and volatile aldehyde levels. The addition of glucose to meat did not affect the biochemical characteristics of stored minced pork. Copyright © 2016 Elsevier Ltd. All rights reserved.

  7. Effect of marine by-product meals on hen egg production parameters, yolk lipid composition and sensory quality.

    Science.gov (United States)

    Toyes-Vargas, E; Ortega-Pérez, R; Espinoza-Villavicencio, J L; Arellano-Pérez, M; Civera, R; Palacios, E

    2018-04-01

    The effect of including 5% marine by-product meals in feeds of laying hens on egg production, composition and sensory characteristics was tested. Marine by-product meals were prepared using two methods: (i) cooking (100°C/10 min) followed by drying (60°C/24 hr) or (ii) grinding followed by drying. The raw materials used for meal production were scallop or squid viscera, shrimp heads or whole mackerel. A total of 108 laying hens were allocated to nine diet treatments; one control diet (corn and soya bean based) and eight experimental diets, containing 95% of the control feed and 5% of the experimental meal for three weeks. Daily intake was higher in hens fed the dried mackerel and cooked shrimp meals. All the experimental treatments showed significantly higher concentration of n-3 HUFA in yolk reserves and phospholipids compared to the control (0.12-0.13 g per 100 g), especially those with scallop or squid prepared by both methods (0.53-0.95 g per 100 g). Scallop, squid and shrimp meal inclusion in the feed produced eggs with more astaxanthin (0.22 mg per 100 g) while this carotenoid was absent in the control and mackerel treatments. Visual evaluation of raw yolk colour increased with the inclusion of marine by-product meals with higher values in hens fed shrimp heads (13), followed by scallop viscera (11), squid viscera (9), and with similar values for mackerel and control (4). The taste, aroma, texture and colour of cooked eggs from different treatments were not statically different when evaluated by a panel of 60 untrained people. These results suggest that meals from marine by-products are a better alternative for improving egg yolk composition by increasing n-3 HUFA when compared to fishmeal as they also increase astaxanthin and yolk pigmentation without affecting egg sensory characteristics. © 2017 Blackwell Verlag GmbH.

  8. Open-refrigerated retail display case temperature profile and its impact on product quality and microbiota of stored baby spinach

    Science.gov (United States)

    Open-refrigerated display cabinets are widely used in supermarkets and grocery chains around the globe. However, the temperature conditions in these display cases are variable which may impact product quality and safety. Therefore, we investigated the quality and microbiological populations of bagge...

  9. Effect of 60Co γ-irradiation on postharvest quality of pleurotus nebrodensis stored at 4 degree C

    International Nuclear Information System (INIS)

    Xiong Qiaoling; Huazhong Agriculture Univ., Wuhan; Xing Zengtao; Feng Zhiyong; Buswell, J.; Bian Yinbing

    2007-01-01

    The effect of γ-rays irradiation on the fresh-keeping of Pleurotus nebrodensis fruit bodies was reported in this paper. Fresh harvested fruit bodies of Pleurotus nebrodensis were irradiate at different doses levels (0.8-2.0 kGy) and stored for 22 days at 4 degree C. The fruit bodies treated with 1.2 kGy irradiation retained the highest soluble protein contents, and exhibited less postharvest softening throughout the storage period. Regression analysis plots of fruit body hardness versus soluble protein content were linear (t>0.05). Increases in mushroom cell permeability observed throughout the storage period were directly related to irradiation dose. Too higher dose(≥2.0 kGy) of irradiation will accelerate the nutrition degradation and rotting of the fruit bodies. (authors)

  10. Quality evaluation of Argentina onion irradiated, transported and stored; Avaliacao da qualidade da cebola argentina irradiada, transportada e armazenada no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Walder, J M.M.; Domarco, R E; Spoto, M H.F.; Blumer, L [Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil); Curzio, O A; Croci, C A [Universidad Nacional del Sur, Bahia Blanca (Argentina). Lab. de Radioisotopos

    1996-12-31

    Onion bulbs of the Valenciana Sintetica 14 variety from Argentina were irradiated with a dose of 60 Gy gamma rays at 30-40 days after harvest. Treated and control lots (40 bags of 20 Kg each) were send by road to Piracicaba, SP, Brazil, and stored up to 180 days in a warehouse at 20-28{sup 0} C and relative humidity ranging from 50 to 100%. Monthly quality control was done by physical and sensorial analysis. Radiation treatment reduced the weight loss of the bulbs and increased the percentage of marketable bulbs without affecting its sensorial properties. (author). 4 refs, 8 tabs.

  11. Effect of packaging conditions on the growth of micro-organisms and the quality characteristics of fresh mushrooms (Agaricus bisporus) stored at inadequate temperatures.

    Science.gov (United States)

    González-Fandos, E; Giménez, M; Olarte, C; Sanz, S; Simón, A

    2000-10-01

    Mushrooms were packed in two polymeric films (perforated and non-perforated PVC) and stored at 17 degrees C and 25 degrees C. The carbon dioxide and oxygen content inside the packages, aerobic mesophiles, Pseudomonas spp., faecal coliforms, Escherichia coli, anaerobic spores and major sensory factors (colour, texture, development stage and presence of moulds) were determined. The non-perforated packages had the highest contents of CO2 (6-7%), the lowest contents of O2 (0.013-0.17%) and the most desirable quality parameters (texture, development stage and absence of moulds). Pseudomonas spp. counts were around 1 logarithmic unit lower in mushrooms packaged in non-perforated film as the O2 concentrations were lower than in perforated film. The mushrooms themselves were inoculated with an enterotoxin A-producing strain of Staphylococcus aureus, packaged in overwrapped trays and stored at 17 and 25 degrees C. Staphylococcus aureus did not grow in the samples stored at 17 degrees C. Only slight growth was observed in mushrooms packaged with non-perforated film after 1 day at 25 degrees C. No enterotoxin was detected in any package. Faecal coliform counts were <2 log cfu g(-1). Escherichia coli was not isolated in any of the samples. At 25 degrees C, counts of anaerobic spores of around 2 log cfu g(-1) were detected in those mushrooms packaged in non-perforated film.

  12. Evaluation of porcine beta defensins-1 and -2 as antimicrobial peptides for liquid-stored boar semen: Effects on bacterial growth and sperm quality.

    Science.gov (United States)

    Puig-Timonet, Adrià; Castillo-Martín, Miriam; Pereira, Barbara A; Pinart, Elisabeth; Bonet, Sergi; Yeste, Marc

    2018-04-15

    The present study evaluated whether two different antimicrobial peptides (AMP): porcine beta defensins-1 (PBD1) and -2 (PBD2) at three concentrations (1.5 μM, 3 μM and 5 μM) could be a suitable alternative to antibiotics in liquid-stored boar semen. Two separate experiments were conducted with liquid-stored boar semen preserved at 17 °C for 9-10 days. In the first one, we evaluated the impact of adding three concentrations of each AMP on the bacterial growth and sperm quality of boar semen stored for 10 days. In the second experiment, the ability of these AMPs to control bacterial growth was determined over a 9-day period, following artificial inoculation with Escherichia coli at 10 7 and 10 8  CFU mL -1 . In both experiments, sperm viability was assessed through flow cytometry, sperm motility was determined with Computer Assisted Sperm Analysis (CASA) and the inhibitory effect on microbial growth was evaluated by bacteria culture on Luria Bertani agar. PBD1 and PBD2 were found to significantly (P extenders for boar semen at a concentration of 3 μM, but do not completely control all bacterial growth. Copyright © 2018 Elsevier Inc. All rights reserved.

  13. Egg freezing and egg banking: empowerment and alienation in assisted reproduction.

    Science.gov (United States)

    Robertson, John A

    2014-06-01

    With the development of rapid freezing of human oocytes, many programs have reported IVF success rates comparable to those achieved with fresh eggs and thawed frozen embryos. Egg freezing is now gaining professional and regulatory acceptance as a safe and effective technique for women who wish to avoid discarding excess embryos, who face fertility-threatening medical treatments, or who want to preserve their eggs for use when they are better situated to have a family. This article focuses on the uses of and justification for egg freezing, the path to professional acceptance, the variability in success rates, and the controversy over freezing eggs for social rather than medical reasons. It also addresses the emergence of egg banking as a separate sector in the infertility industry, the regulatory issues that it poses, and its effect on egg donation. Key here is the legal control of stored eggs by banking women and their options when they wish to dispose of those eggs. The analysis is framed around empowerment and alienation. Egg freezing is generally empowering for women, but the donation or sale of unused eggs to infertile women, egg bankers, and researchers also raises issues of alienation.

  14. Effects of dietary humic substances on egg production and egg shell ...

    African Journals Online (AJOL)

    Effects of dietary humic substances on egg production and egg shell quality of hens after peak laying period. ... Ninety Isa Brown layers from 51 to 61 weeks of age were allocated to three treatment groups, namely H0, H1 and H2. ... Egg production (% hen-day) in the H2 group was higher (P < 0.05) than control group.

  15. Chipping quality of γ-irradiated potatoes of three Indian cultivars stored at 8, 12 and 16 degC

    International Nuclear Information System (INIS)

    Ezekiel, R.; Singh, B.; Datta, P.S.

    2008-01-01

    Potatoes of cultivars Kufri Chandramukhi, Kufri Jyoti and Kufri Chipsona-2 were irradiated with 0.1 and 0.5 kGy γ-rays and stored at 8, 12 and 16 degC and 85-90% RH for 180 days, with CIPC (isopropyl N-(3-chlorophenyl) carbamate) treatment as control. Irradiation increased weight loss and rotting compared to control. There was little change in the dry matter content due to irradiation up to 120 days of storage (DOS) but increased significantly at 180 DOS. The reducing sugar content increased by 18-35% with irradiation and resulted in increased browning of potato chips prepared. There was a significant difference in reducing sugar content and chip colour, between 0.1 and 0.5 kGy irradiation. Irradiation also caused 20-29% increase in sucrose content. Compared to control, free amino acids and phenols content increased with irradiation but there was no significant difference between 0.1 and 0.5 kGy. Amongst the cultivars, Kufri Chipsona-2 showed higher weight loss and rotting, which increased further with irradiation, and increase in storage temperature and duration. (author)

  16. Effects of adding aqueous extract of Tribulus terrestris to diet on productive performance, egg quality characteristics, and blood biochemical parameters of laying hens reared under low ambient temperature (6.8 ± 3 °C)

    Science.gov (United States)

    Akbari, Mohsen; Torki, Mehran

    2016-06-01

    A study was conducted using 144 laying hens to evaluate the effects of adding aqueous extract of Tribulus terrestris to diets on productive performance, egg quality traits, and some blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C). The birds were randomly assigned to each of four dietary treatments (C, T1, T2, and T3) with six replicate cages of six birds. Diet inclusion of aqueous extract of T. terrestris at the rate of 10, 20, and 30 ml/Lit offered to groups T1, T2, and T3, respectively, while group C served as the control diet with no addition. Feed intake (FI), feed conversion ratio (FCR), egg weight (EW), egg production (EP), and egg mass (EM) were evaluated during the 42-day trial period. The EP and EM increased, whereas FCR decreased ( P terrestris has beneficial effects on productive performance of laying hens reared under cold stress condition.

  17. Quality enhancement in the Japanese sea bass (Lateolabrax japonicas) fillets stored at 4°C by chitosan coating incorporated with citric acid or licorice extract.

    Science.gov (United States)

    Qiu, Xujian; Chen, Shengjun; Liu, Guangming; Yang, Qiuming

    2014-11-01

    The preserving effects of chitosan, chitosan and citric acid, chitosan and licorice extract on fresh Japanese sea bass fillets stored at 4 °C for 12 days were studied. Results showed that citric acid or licorice extract can enhance the preserving function of chitosan significantly by retarding lipid oxidation and inhibiting microbial growth as reflected in thiobarbituric acid reactive substances and total plate count, respectively. Both total volatile basic nitrogen values and sensory scores indicated chitosan and citric acid or licorice extract can significantly reduce the quality loss and extend the shelf life of Japanese sea bass fish fillets during refrigerated storage. Citric acid or licorice extract with chitosan could thus be applied in the seafood industry to enhance quality of fish fillets as natural preservatives. Copyright © 2014 Elsevier Ltd. All rights reserved.

  18. Diseases of amphibian eggs and embryos

    Science.gov (United States)

    Green, D.E.; Converse, K.A.; Majumdar, S.K.; Huffman, J.E.; Brenner, F.J.; Panah, A.I.

    2005-01-01

    female oviduct, either due to infectious disease, nutritional status, hormonal imbalances, or sublethal intoxications, could affect the quality of secreted gelatinous capsules on eggs, thus rendering an egg mass susceptible to other stressors. Diseases of amphibian eggs and embryos presented in this chapter are Lucke frog herpesvirus Ranavirus (iridovirus) infection Bacteria Watermold infection (saprolegniasis) Algae Microsporidia

  19. Consumer Attitudes Toward Storing and Thawing Chicken and Effects of the Common Thawing Practices on Some Quality Characteristics of Frozen Chicken.

    Science.gov (United States)

    Benli, Hakan

    2016-01-01

    In this study, a survey was conducted to both evaluate the consumers' general attitudes for purchasing and storing the raw chicken and determine the thawing practices used for defrosting frozen chicken at home. About 75% of the consumers indicated purchasing chicken meat at least once a week or more. Furthermore, the majority (82.16%) of those who stored at least a portion of the raw chicken stated freezing the raw chicken meat at home. Freezing the chicken meat was considered to have no effect on the quality by 43.49% of the consumers while 56.51% thought that freezing had either negative or positive effects on the quality. The survey study indicated that top five most commonly used thawing practices included thawing on the kitchen counter, thawing in the refrigerator, thawing in the warm water, thawing in the microwave, and thawing under tap water. In addition, an experimental study was conducted to determine the effects of these most commonly used thawing practices on some quality characteristics of the chicken meat including pH, drip loss, cooking loss, color analysis and textural profile analysis. Although, L* value for thawing on the kitchen counter was the lowest, after cooking, none of the thawing treatments have a significant effect on the color values. Thawing in the microwave produced the highest drip loss of 3.47% while the lowest drip loss of 0.62% was observed with thawing in the refrigerator. On the other hand, thawing in the microwave and refrigerator caused the lowest cooking loss values of 18.29% and 18.53%, respectively. Nevertheless, there were no significant differences among textural parameter values of the defrosted and then cooked samples using the home based thawing practices, indicating similar quality characteristics among the samples.

  20. Consumer Attitudes Toward Storing and Thawing Chicken and Effects of the Common Thawing Practices on Some Quality Characteristics of Frozen Chicken

    Science.gov (United States)

    Benli, Hakan

    2016-01-01

    In this study, a survey was conducted to both evaluate the consumers’ general attitudes for purchasing and storing the raw chicken and determine the thawing practices used for defrosting frozen chicken at home. About 75% of the consumers indicated purchasing chicken meat at least once a week or more. Furthermore, the majority (82.16%) of those who stored at least a portion of the raw chicken stated freezing the raw chicken meat at home. Freezing the chicken meat was considered to have no effect on the quality by 43.49% of the consumers while 56.51% thought that freezing had either negative or positive effects on the quality. The survey study indicated that top five most commonly used thawing practices included thawing on the kitchen counter, thawing in the refrigerator, thawing in the warm water, thawing in the microwave, and thawing under tap water. In addition, an experimental study was conducted to determine the effects of these most commonly used thawing practices on some quality characteristics of the chicken meat including pH, drip loss, cooking loss, color analysis and textural profile analysis. Although, L* value for thawing on the kitchen counter was the lowest, after cooking, none of the thawing treatments have a significant effect on the color values. Thawing in the microwave produced the highest drip loss of 3.47% while the lowest drip loss of 0.62% was observed with thawing in the refrigerator. On the other hand, thawing in the microwave and refrigerator caused the lowest cooking loss values of 18.29% and 18.53%, respectively. Nevertheless, there were no significant differences among textural parameter values of the defrosted and then cooked samples using the home based thawing practices, indicating similar quality characteristics among the samples. PMID:26732333

  1. Consumer Attitudes Toward Storing and Thawing Chicken and Effects of the Common Thawing Practices on Some Quality Characteristics of Frozen Chicken

    Directory of Open Access Journals (Sweden)

    Hakan Benli

    2016-01-01

    Full Text Available In this study, a survey was conducted to both evaluate the consumers’ general attitudes for purchasing and storing the raw chicken and determine the thawing practices used for defrosting frozen chicken at home. About 75% of the consumers indicated purchasing chicken meat at least once a week or more. Furthermore, the majority (82.16% of those who stored at least a portion of the raw chicken stated freezing the raw chicken meat at home. Freezing the chicken meat was considered to have no effect on the quality by 43.49% of the consumers while 56.51% thought that freezing had either negative or positive effects on the quality. The survey study indicated that top five most commonly used thawing practices included thawing on the kitchen counter, thawing in the refrigerator, thawing in the warm water, thawing in the microwave, and thawing under tap water. In addition, an experimental study was conducted to determine the effects of these most commonly used thawing practices on some quality characteristics of the chicken meat including pH, drip loss, cooking loss, color analysis and textural profile analysis. Although, L* value for thawing on the kitchen counter was the lowest, after cooking, none of the thawing treatments have a significant effect on the color values. Thawing in the microwave produced the highest drip loss of 3.47% while the lowest drip loss of 0.62% was observed with thawing in the refrigerator. On the other hand, thawing in the microwave and refrigerator caused the lowest cooking loss values of 18.29% and 18.53%, respectively. Nevertheless, there were no significant differences among textural parameter values of the defrosted and then cooked samples using the home based thawing practices, indicating similar quality characteristics among the samples.

  2. Influence of packaging on the quality of cold-stored grapes packed into boxes for later repacking

    Science.gov (United States)

    A two-year study was conducted to examine various commercial practices associated with the cold storage of table grapes that are to be later re-packed for final shipment to provide information on the impact on fruit quality. Variables examined included the use of box types with vent areas ranging f...

  3. Quality of 'Delta Valencia' orange grown in semiarid climate and stored under refrigeration after coating with wax

    Directory of Open Access Journals (Sweden)

    Gerlândia da Silva Pereira

    2013-06-01

    Full Text Available The effects of carnauba-based wax on the quality of 'Delta Valencia' orange produced in Ceará state, Brazil, were studied. The fruits were coated with carnauba-based wax and refrigerated (7 ± 2 ºC and 85 ± 2% R.H. for 28 days. The quality attribute parameters assessed were weight loss, peel color (brightness, hue angle, and chromaticity, peel moisture, pH, soluble solids (SS, titratable acidity (TA, SS/TA ratio, ascorbic acid, total soluble sugars, reducing sugars, yellow flavonoids, and polyphenols. The results showed that 'Delta Valencia' oranges grown in the dry climate of Ceará state has excellent quality. The coated fruits lost mass at a lower rate than the the control fruits. No significant loss of soluble solids, titratable acidity, pH, and SS/TA ratio was observed, while ascorbic acid, soluble sugars, reducing sugars, yellow flavonoids, and polyphenols increased during storage in both the coated and control fruits. Carnauba-based wax coated fruits showed no signal of dehydration keeping their shiny green peel up to the end of the storage. The use of coating was crucial for the maintenance of visual quality by reducing mass loss, as well as keeping peel moisture.

  4. effects of extended period of storage and strain of layer on quality

    African Journals Online (AJOL)

    User

    strain of layers and extended storage length on internal and external qualities of chicken eggs. ... storage of egg on some important egg quality determinants like egg weight, albumen height and ... of information on the quality of eggs of these.

  5. The Addition of White Turmeric (Curcuma zedoaria Concentrated Base on Quality Antioxidant Activity, Total Phenol, Protein Content and Salt Content of Salted Egg

    Directory of Open Access Journals (Sweden)

    Mu’addimah Mu’addimah

    2017-03-01

    Full Text Available The purposes of this research was to determine the effect of Curcuma zedoaria concentrated addition on quality antioxidant activity, total phenols, protein content and salt content of salted egg. The materials were duck’s egg, water, salt, and essence of white turmeric. The method was experiment using Complete Randomized Design (CRD with five treatments and three for replications. The Curcuma zedoaria juice research were divided into P0 (0%, P1 (10%, P2 (20%, P3 (30% and P4 (40%. Data was analyzed using Analysis of Variance (ANOVA and then continued by Duncan’s Multiple Range Test (DMRT, if it was found significant effect among treatmeants. The result showed that the addition of Curcuma zedoaria juice indicated highly significant different effect (P<0.01 on antioxidant activity, protein content and salt content, but significantly effect (P<0.05 on total phenol. The best treatment was the addition of Curcuma zedoaria juice 40% were indicated of antioxidant activity, total phenol, protein content and the salt content was 99.80 mg/g, 0.16%, 9.96%, 2.43% respectively.

  6. Supplementation of different concentrations of Orvus Es Paste (OEP) to ostrich egg yolk lipoprotein extender improves post-thaw boar semen quality.

    Science.gov (United States)

    Fraser, L; Jasiewicz, E; Kordan, W

    2014-01-01

    This study aimed to compare post-thaw quality of boar semen following freezing in an ostrich egg yolk lipoprotein (LPFo) extender supplemented with 0%, 0.25% and 0.50% Orvus Es Paste (OEP). Sperm assessments included total motility (TMOT), mitochondrial function (MF), plasma membrane integrity (PMI) and acrosome integrity (normal apical ridge, NAR). Considerable variations among boars and OEP treatments had a significant effect (P semen samples frozen in the absence of OEP. By contrast, lactose-LPFo-glycerol extender supplemented with either 0.25% OEP or 0.50% OEP markedly enhanced post-thaw sperm characteristics. In all boars, there were no marked differences in post-thaw sperm TMOT between the freezing extenders supplemented with 0.25% and 0.50% OEP. However, a decline in the percentage of post-thaw motile spermatozoa was more pronounced in the extender supplemented with 0.50% OEP following a 120-min incubation period. Furthermore, the proportions of frozen-thawed spermatozoa with MF, PMI and NAR acrosomes varied significantly among the boars in the OEP-supplemented extenders. The findings of this study indicate that different OEP concentrations, in the presence of ostrich egg yolk lipoproteins, could have varying effects on post-thaw sperm survival.

  7. Effects of Curcuma longa rhizome powder on egg quality, performance and some physiological indices of laying hens fed different levels of metabolizable energy.

    Science.gov (United States)

    Mirbod, Mahsa; Mahdavi, Amir Hossein; Samie, Abdol-Hossein; Mehri, Mehran

    2017-03-01

    High-energy diets of laying hens may improve roductive performance, although some negative effects may also appear with respect to egg quality and physiological parameters. Curcuma longa rhizome powder (CRP) has beneficial effects on health indices of the birds through antioxidant and antimicrobial properties, especially when the birds experience nutritional stress. Increasing dietary CRP enhanced egg quality by improving eggshell thickness and hardness but decreasing yolk cholesterol content (P < 0.05). The best feed conversion ratio was obtained in birds fed high-apparent metabolizable energy (AME) diets supplemented with 2.0 g kg -1 CRP (P < 0.05). Although increasing dietary AME elevated the serum concentration of triglycerides (P < 0.05) and enzymatic activities of alanine aminotransferase and aspartate aminotransferase (P < 0.05), dietary inclusion of CRP alleviates the blood levels of these enzymes (P < 0.01). Low level of dietary CRP boosted the immune responses to Newcastle virus (P < 0.01) and sheep red blood cells (P < 0.05) antigens but decreased the heterophil to lymphocyte ratio (P < 0.05). Inclusion of at least 2.0 g kg -1 CRP in the diet of laying decreased Escherichia coli enumerations in the ileal content (P < 0.01) and improved villus height, crypt depth and goblet cell numbers (P < 0.05). An improvement in the productive performance of laying hens fed high-energy diets might be associated with decreasing health indices and product quality, which could potentially be amended by nutritional modifications such as incorporating medicinal herbs in the feed. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  8. Meat quality of lamb frozen stored up to 21 months: instrumental analyses on thawed meat during display.

    Science.gov (United States)

    Muela, E; Monge, P; Sañudo, C; Campo, M M; Beltrán, J A

    2015-04-01

    The study analysed the effect of frozen storage duration (FSD: 0, 1, 9, 15 or 21 months) and display duration (DD: 0-24 h post-slaughter-, 3 and 6 days) in modified atmosphere packaging (MAP) on lamb quality. pH, colour, lipid oxidation, water holding capacity and instrumental texture were performed on Longissimus muscle in displayed fresh and thawed meat. FSD affected all the variables showing lower differences between fresh and 1 month storage than among them and longer FSD. Only cooking losses were not affected by DD in thawed meats. It was observed a general decrease in quality (lower redness and water holding capacity; higher yellowness and lipid oxidation) as FSD or DD increased and only texture was improved over DD being thawed meat more tender. In conclusion, lamb storage at -18°C should not exceed 1 month if thawed meat would be later displayed in MAP while meat would have an acceptable quality up to 21 months without subsequent display. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. Can acceptable quality angel food cakes be made using pasteurized shell eggs? The effects of processing factors on functional properties of angel food cakes

    Science.gov (United States)

    Due to recent incidences of Salmonella contamination, the market for pasteurized shell eggs is rapidly growing. One objection to using pasteurized shell eggs is the belief that they will produce unacceptable baked product (e.g., angel food cakes). In the present study, shell eggs were pasteurized us...

  10. Impact of egg white protein on the quality and stability of corn oil-in-water emulsion

    International Nuclear Information System (INIS)

    Iqbal, S.; Batool, J.; Ajaz, M.

    2017-01-01

    The effect of egg albumin has been examined on the texture and stability of O/W emulsion. The corn oil was used as dispersed phase while the aqueous phase as continuous phase of the emulsion. The aqueous phase was designed with the protein contents (0.5- 4 wt. %) at pH 7. The different oil phase (10-40 wt. %) were homogenized in aqueous phase (90-60 wt. %). It was observed that the viscosity and turbidity of the emulsion were increased with the increase of protein concentration and oil phase contents. Flow profile showed that shear stress was increased with increase of shear rate but it decreased at higher shear rate (100 s-1) in heated emulsion. On the other hand the emulsion viscosity was decreased with the increase of shear rate showing non- Newtonian behavior. This work may be useful in the formulation and physicochemical properties of food products i.e. sauces, mayonnaise etc. (author)

  11. The effect of sage, sodium erythorbate and a mixture of sage and sodium erythorbate on the quality of turkey meatballs stored under vacuum and modified atmosphere conditions.

    Science.gov (United States)

    Karpińska-Tymoszczyk, M

    2010-12-01

    1. The combined effect of sage (S), sodium erythorbate (SE), a mixture of sage and sodium erythorbate (MIX) and vacuum packaging (VP) and modified atmosphere packaging (MAP) on the quality of cooked turkey meatballs stored at 4°C was investigated. The physicochemical properties (colour, MDA, AV, pH, water activity), microbiological quality characteristics (counts of mesophilic and psychrotrophic bacteria, fungi, coliforms and Clostridium sp.) and flavour attributes of meatballs were determined. 2. The values of the colour parameters L*, a* and b* were affected by the additives and packaging method. The colour of meatballs was better protected by sodium erythorbate than by sage or a mixture of sage and sodium erythorbate. The additives effectively stabilised lipids against oxidation and slowed down hydrolytic changes in turkey meatballs. Sage and a mixture of sage and sodium erythorbate showed stronger antioxidant properties than sodium erythorbate added alone. Products with additives were characterised by better sensory quality than control samples. Sage and MIX prevented the growth of mesophilic and psychrotrophic bacteria. All additives inhibited the growth of coliforms. 3. MAP was more effective than VP in maintaining the microbial and sensory quality stability of cooked turkey meatballs. However, VP appears to be a better method as regards the maintaining of lipid stability in turkey meatballs.

  12. Correlations between quality of work life and organizational commitment: clothing retail store in Joinville/SC/BraziL

    Directory of Open Access Journals (Sweden)

    Eduardo Zanardi

    2015-06-01

    Full Text Available This study contributes to the literature on quality of work life (QWL, testing the relationship between QWL and organizational commitment (OC through questionnaires. It was used a sample of 40 operating level employees of a unit  located in Joinville/SC of a large retail clothing company in Brazil. The results indicated a significant positive relationship between QWL and CO. To this end, it was  used the Pearson correlation coefficient to establish the correlation between the two factors. Statistical analyzes showed that the two constructs are correlated. Implications of results and directions for future research are presented in this study

  13. Testing an egg yolk supplemented diet on boars to aid in sperm adaptation at 5°C.

    Science.gov (United States)

    Casas, Isabel; Miller-Lux, Yvonne; Osborne, Betty; Bonet, Sergi; Althouse, Gary C

    2015-01-01

    In many species, extended semen can be stored at low temperatures to slow bacterial growth. However, boar semen performs poorly at temperatures below 15 °C and this poses unique challenges, as it is not easy to maintain a constant 15-19 °C during shipment. Some extenders have been formulated with egg yolk for storage at 5 °C but the addition of egg yolk is not applicable in the majority of commercial operations. The purpose of this study was to evaluate if boar dietary supplementation with powdered egg yolk imparts any protective effects on sperm quality when stored at 15 °C and 5 °C for up to 11 days in a conventional extender. Ten boars were fed a commercial diet with the addition of 0.11 Kg of powdered egg yolk for 10 weeks. Ejaculates collected on weeks 4, 6, 8, and 10 were processed for storage at both 15 °C and 5 °C and compared with ejaculates from boars fed a standard diet. Throughout an 11-day storage period, sperm quality was assessed including several motility and morphologic parameters and select plasma membrane properties (fluidity, integrity, and triacylglycerol content). Linear regression models were used to describe effects of treatment, storage day, week and temperature on all sperm parameters. Overall, there were minimal beneficial effects of egg yolk treatment on sperm quality parameters. Sperm from egg yolk supplemented boars did have a slower decline in viability and plasma membrane fluidity than that observed in the control sperm when stored at 5 °C (p boars compared to controls at week 10 (p boars.

  14. Qualidade fisiológica de sementes de soja tratadas e armazenadas - Physiological quality of treated and stored soybean seeds.

    Directory of Open Access Journals (Sweden)

    Gustavo Cruvinel Rocha

    2017-07-01

    During storage as seeds or grains may suffer in their chemical composition, because of the storage environment. In view of this, a production of high quality physiological seeds will depend on the sum of all genetic, physical, physiological and sanitary attributes. However, little is known about the effects of seeds by harvesting, drying, processing and storage for long periods of time. Therefore, it was conducted in the seed laboratory of the University of Rio Verde, in order to evaluate a physiological quality of seeds treated under different storage conditions. The experimental design was used for the completely randomized 2x5x7, two storage conditions (conventional and air conditioned warehouse, five seed treatments and seven evaluation periods, with four replications. At 0, 20, 40, 60, 80, 100, 120 days after an imposition of treatments for evaluated germination, emergence speed index, accelerated aging and root length. The chemical treatments applied in soybean seeds (cultivar M 7739 IPRO reduced seed vigor. Keywords: Glycine max, germination, vigor.

  15. Effect of ionizing radiation and modified atmosphere packaging on shelf-life and quality of tomato stored at low temperature

    International Nuclear Information System (INIS)

    Mathew, Aneesh; Kudachikar, V.B.; Ravi, R.

    2007-01-01

    Investigation was conducted to extend the shelf-life and maintain the fruit quality characteristics of tomatoes (Lycopersicum esculentum) under the influence of modified atmosphere packaging (MAP) in low density polyethylene (LDPE) film pouches, γ-irradiation at 0, 1,2, 3 and 4 KGy and low temperature (12±1 deg.C) storage at 90-95% RH. Changes in gas composition of modified atmosphere (MA) packages, total soluble solids (TSS), acidity, lycopene content, ascorbic acid, reducing and total sugars of MA packed tomatoes with or without irradiation treatments during storage were recorded at 0,7,14 and 21 days. Results revealed that tomatoes packed with LDPE pouches alone as well as treatment with MAP and low doses (1 and 2 KGy) of γ-irradiation showed good storability up to 21 days at 12±1 deg.C and 90- 95% RH with maximum retention of fruit quality characteristics as compared to 7 days for openly kept control tomatoes. (author)

  16. Qualidade do leite cru ovino armazenado sob refrigeração | Quality of ovine raw milk stored under refrigeration

    Directory of Open Access Journals (Sweden)

    Félix Roman Munieweg

    2017-02-01

    Full Text Available A industrialização de lácteos ovinos é recente no Brasil e a produção é concentrada em regiões de serra, como a Gaúcha. O leite ovino possui alto conteúdo de sólidos comparado ao bovino, com maior rendimento na produção de queijo. A produção deste leite sofre variações sazonais e poderia ser estocado até obter uma quantidade suficiente para processamento. O objetivo deste trabalho foi avaliar parâmetros microbiológicos e físico-químicos no leite proveniente de seis produtores sob armazenamento refrigerado. O leite foi analisado durante sete dias, incluindo contagem padrão em placas (CPP, psicrotróficos, coliformes totais e termotolerantes, Staphylococcus sp. e Staphylococcus aureus, acidez titulável, pH, atividade de água e proteína. Os resultados demonstraram altas contagens microbianas e CPP acima dos limites estabelecidos pela legislação para a maioria das amostras. Contagens de psicrotróficos, coliformes totais e fecais foram elevadas durante este período. A acidez titulável aumentou ao longo dos dias e o conteúdo de proteína diminuiu. As amostras do produtor B apresentaram menores contagens microbianas dentre todas testadas. A estocagem a frio torna-se uma alternativa, a curto prazo, quando há diminuição na produção de leite ovino para beneficiamento a derivados. No entanto, o período de armazenamento refrigerado não deve ultrapassar dois dias, devido à deterioração. ==================================================== The dairy sheep industry is recent in Brazil and the production is concentrated in mountainous regions, such as Serra Gaúcha. Ovine milk has a higher solids content compared to bovine milk, thus with higher yield in cheese production. Sheep milk production undergoes seasonal variations and it could be stored until a sufficient quantity is available for processing. The objective of this study was to evaluate microbiological and physicochemical parameters in ovine milk from six

  17. Determination of the Quality and Shelf Life of Sous Vide Cooked Turkey Cutlet Stored at 4 and 12ºC

    Directory of Open Access Journals (Sweden)

    IT Akoğlu

    Full Text Available ABSTRACT The aim of this study was to determine the quality and shelf life of sous vide turkey cutlet stored at 4 and 12ºC. Samples were packaged under vacuum into polyamide-polypropylene pouches, cooked using sous vide technology (65ºC/40 min, chilled at 3ºC and stored at 4 and 12ºC for 5 weeks. Microbial (TMAB, lactic acid bacteria, Enterobacteriaceae, moulds and yeasts, Salmonella spp., L. monocytogenes, Cl. perfringens, physical-chemical (pH, water activity, TBARS, L*a*b* colour, texture profile analysis and shear force and sensory (appearance, colour, odour, flavour, juiciness, chewiness and acceptance parameters were determined. According to the results of mesophilic bacterial counts and sensory analysis, the shelf life of the sous vide turkey cutlet, cooked at 65ºC for 40 min, was determined as 28 days at 4ºC while 15 days at 12ºC. Salmonella spp., L. monocytogenes, Cl. perfringens were not detected in turkey cutlet samples during the storage period. It was detected that sous vide cooked provided convenient ready-to-eat foods and a long shelf life for turkey cutlet.

  18. Ethnobotanical, micrographic and pharmacological features of plant-based weight-loss products sold in naturist stores in Mexico City: the need for better quality control

    Directory of Open Access Journals (Sweden)

    Patricia Marta Arenas

    2013-09-01

    Full Text Available The consumption of dietary supplements and herbal mixtures to promote weight loss is a common practice in the West. This study was undertaken in Mexico City, surveying stores selling "natural products" at subway stations. The aims of this paper were as follows: to compile a record of plant products marketed as slimming aids and of retailer perceptions of these products; to review the pharmacological and ethnobotanical literature on the species declared; and to create an optical micrograph of a subset of products to verify the accuracy of the list of component plant species shown on the labels. We applied the techniques of observation, semi-structured interviews and free-listing at the retail stores. Results are presented for the 75 species recorded in the 41 weight-loss products surveyed, showing which plant parts are used, the geographical distribution of the species, pharmacological effects, dosage, route of administration and method of preparation, as well as ethnobotanical information derived from fieldwork. We discuss the values assigned to the species used. Microscopic analyses revealed that many of the plant ingredients declared were absent, highlighting the need for greater quality control and safety of these herbal remedies.

  19. Effects of Hen Age and Egg Weight Class on the Hatchability of Free Range Indigenous Chicken Eggs

    Directory of Open Access Journals (Sweden)

    AM Abudabos

    Full Text Available ABSTRACT In total, 806 eggs of free-range Hassawi indigenous chickens were collected from local farm in Saudi Arabia. Eggs were weekly collected for 11 weeks. Initial egg weight (IEW was recorded, and eggs were graded into four classes (A: 35-40 g, B: 40-45 g, C: 45-50 g, and D: 50-55 g. Eggs were stored for seven days at 75-80% relative humidity and 14-16 C, after which egg weight losses (WL0 were calculated. During incubation, eggs were weighed on days 7 (W7 and 14 (W14, and egg weight losses on days 7 (WL7 and 14 (WL14, and total loss (WL0-14 were calculated. Hatchling weight (CW was measured. The proportion of CW relative to egg weight loss (WL on days0, 7 and 14 days of incubation (CW:WL0; CW:WL7 and CW:WL14, respectively, and break out analyses, fertility (F,total hatchability (HC and hatchability of fertile eggs (HF were also calculated. IEW decreased (p<0.05 with hen age. Stored egg weight (SEW were decreased as hen age increased (p<0.05. WL7, WL14 and WL0-14 showed significant differences (p<0.001 and increased up to first six-week of egg collection time. Hen age affected CW:WL before incubation, and on days 7 and 14 of incubation. Fertility (F was affected (p<0.05 in unpredicted way of increasing and decreasing by hen age. Egg weight class affected SEW, W7and W14 (p<0.001. Class D eggs were the highest weight. Class C eggs had highest HC. In summary, hatching eggs of Hassawi hens were affected by hen age and egg weight in randomly increase and decrease .

  20. Quality and shelf life of the gonad of lion's paw scallop transported and stored whole in refrigeration

    Directory of Open Access Journals (Sweden)

    Victor Manuel Ocaño-Higuera

    2015-05-01

    Full Text Available The effect of refrigerated 48h transport and 4 days storage on the quality and shelf life of the whole lion's paw scallop Nodipecten subnodosus gonad was evaluated. Proximal composition, adenosine 5´triphosphate (ATP and related products, K-value, total volatile bases (TVB-N, trimethylamine (TMA-N, pH, fatty acid profile and microbiological analyses were quantified. Gonad holds a significant composition of essential fatty acids while levels of gonadal ATP were initially low; moreover, K-value of the gonad remained constant. With respect to TVB-N and TMA-N, only the former exceeded allowed limits. The pH level showed no significant variation during storage and, despite the high level of TVB-N, according to the TMA-N as well as microbiological analyses it was demonstrated innocuity after 4 days under the transportation and storage conditions utilized.

  1. Trichuris trichiura egg (image)

    Science.gov (United States)

    ... is the classical appearance of the Trichuria (whipworm) egg. The eggs are highly infectious. After a person eats contaminated food, the worms hatch from the eggs and live in the intestine, causing vomiting and ...

  2. Producing and marketing a specialty egg.

    Science.gov (United States)

    Michella, S M; Slaugh, B T

    2000-07-01

    Eggland's Best, Inc. markets premium quality shell eggs under the Eggland's Best (EB) brand name. The company, started in 1988, is comprised of a franchise network of established egg producers and covers most of the United States. Eggland's Best provides its franchisees with marketing and technical support. The franchisees produce, process, and distribute EB eggs according to the strict program established and monitored by EB. Production follows the all-natural vegetarian feed program in accordance with the company's US patent entitled "Eggs Compatible with a Cholesterol Reducing Diet and Method of Producing the Same." The EB program excludes animal fat and other animal byproducts. Eggland's Best eggs have seven times the generic level of vitamin E, nearly three times more omega-3 fatty acids and iodine, and 25% less saturated fat than regular generic eggs. Eggland's Best has one of the finest shell egg quality assurance programs anywhere. Eggland's Best franchisees submit weekly egg samples that are analyzed for shell quality, interior quality, vitamin E, iodine, cholesterol and fatty acids. Samples of feed and the EB-patented feed supplement are also analyzed. Approximately 28,000 total laboratory tests are conducted annually. Nationwide product and display retail evaluations are contracted through an outside audit company (40 to 50 cities evaluated four times per year). All EB eggs are USDA graded according to EB's strict quality standards. Producers must follow a food safety quality assurance program (United Egg Producers Association 5-Star or equivalent state or company program). Each egg is stamped "EB" as assurance of meeting EB's highest standards of flavor, quality, and nutrition. Eggland's Best has enjoyed record sales growth for the past 3 yr.

  3. 7 CFR 1250.306 - Commercial eggs or eggs.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Commercial eggs or eggs. 1250.306 Section 1250.306... AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE EGG RESEARCH AND PROMOTION Egg Research and Promotion Order Definitions § 1250.306 Commercial eggs or eggs. Commercial eggs or eggs means...

  4. Investigation of the quality of stored red blood cells after simulated air drop in the maritime environment.

    Science.gov (United States)

    Meli, Athinoula; Hancock, Vicky; Doughty, Heidi; Smedley, Steve; Cardigan, Rebecca; Wiltshire, Michael

    2018-02-01

    Maritime medical capability may be compromised by blood resupply. Air-dropped red blood cells (RBCs) is a possible mitigation factor. This study set out to evaluate RBC storage variables after a simulated parachute air drop into the sea, as limited data exist. The air load construction for the air drop of blood was subject to static drop assessment to simulate a worst-case parachute drop scenario. One control and two test Golden Hour shipping containers were each packaged with 10 RBC units. The control box was not dropped; Test Boxes 1 and 2 were further reinforced with waterproof boxes and underwent a simulated air drop on Day 7 or Day 8 postdonation, respectively. One day after the drop and once a week thereafter until Day 43 of storage, RBCs from each box were sampled and tested for full blood counts, hemolysis, adenosine triphosphate, 2,3-diphosphoglycerate, pH, extracellular potassium, glucose, lactate, deformability, and RBC microvesicles. The packaging configuration completed the air drop with no water ingress or physical damage. All units met UK specifications for volume, hemoglobin, and hemolysis. There were no significant differences for any of the variables studied between RBCs in the control box compared to RBCs in Test Boxes 1 and 2 combined over storage. The test proved that the packaging solution and the impact of a maritime air drop as performed in this study, on Day 7 or Day 8 postdonation, did not affect the in vitro quality of RBCs in SAGM over storage for 35 days. © 2017 AABB.

  5. Effects of different limestone particle sizes in the diet of broiler breeders post molting on their performance, egg quality, incubation results, and pre-starter performance of their progeny.

    Science.gov (United States)

    Bueno, I J M; Surek, D; Rocha, C; Schramm, V G; Muramatsu, K; Dahlke, F; Maiorka, A

    2016-04-01

    An experiment was conducted to test the hypothesis that a coarse limestone diet improves productivity, reproductive performance and the calcium utilization of molted broiler breeders. In total, 640 broiler breeder females, 73-week-old and sixty-four 27-week-old cockerels, Cobb 500, were evaluated during 10 weeks, according to a randomized block design composed of 4 treatments with 8 replicates each. Treatments consisted of diets with the inclusion of 100% fine limestone-fine PS (0.2 mm GMD-geometric mean diameter); PS1: 30% fine limestone+70% limestone with 1.0 mm GMD; PS2: 30% fine limestone+70% limestone with 2.0 mm GMD; and PS3: 30% fine limestone+70% limestone with 3.0 mm GMD. Calcium retention in the gizzard of the breeders, bone characteristics, and breeder performance, egg characteristics, eggshell quality, incubation performance, chick quality and yield, chick pre-starter live performance, and chick bone characteristics were determined. There was no significant difference (P>0.05) in the rate of lay, percentage of non-settable eggs, egg weight, egg shape index, egg specific gravity, eggshell weight, thickness, and percentage hatchability and egg weight loss of broiler breeders fed with diets with different limestone particle sizes. The chick quality and yield, chick pre-starter live performance, and chick bone characteristics were not affected (P>0.05) by any of the limestone particle sizes. It was concluded that live and reproductive performance parameters of broiler breeders post molting is not affected by limestone particle size in the feed. © 2016 Poultry Science Association Inc.

  6. Qualidade de cebola minimamente processada e armazenada sob refrigeração Quality of minimally processed onions stored under refrigeration

    Directory of Open Access Journals (Sweden)

    Ana Carolina A. Miguel

    2007-09-01

    Full Text Available Estudou-se o efeito do armazenamento refrigerado em cebolas, na vida útil e na qualidade de seu produto minimamente processado (PMP. Cebolas ´Superex', tipo comercial, foram armazenadas em câmara fria a 10°C e 60% UR, por 1; 16; 31; 61 e 91 dias. Nestas datas, amostras de bulbos foram minimamente processados e armazenados a 11°C e 61% UR. Estes produtos foram avaliados em dias alternados quanto à massa fresca e a aparência e a cada 2-3 dias quanto à coloração instrumental (luminosidade, ângulo Hue ou de cor e cromaticidade, teores de sólidos solúveis (SS e de acidez titulável (AT e atividade da aliinase. O armazenamento dos bulbos levou os PMP a menor perda de massa, até o agravamento da senescência, observada nos bulbos armazenados por 91 dias. Os produtos dos bulbos armazenados mantiveram aparência adequada até o 12°-13 dia, exceção feita aos bulbos armazenados por 91 dias que conservaram-na por apenas 9 dias. Os PMP tornaram-se mais amarelados, com ligeira redução nos teores de SS, aumento inicial nos de AT e redução na atividade da aliinase. As cebolas 'Superex' podem ser armazenadas a 10ºC e 60% UR por até 61 dias, com produção de produtos minimamente processados com vida útil de até 13 dias, a 11ºC e 61% UR.The effect of refrigerated storage was evaluated on onion shelf-life and quality of fresh-cut products. ´Superex´ onions, commercial type, were stored in a cold room at 10°C and 60% RH for 1; 16; 31; 61, and 91 days. During these days, samples of bulbs were minimally processed and stored at 11°C and 61% RH. These products were evaluated on alternated days, for loss of fresh mass and appearance and every 2-3 days for color (luminosity, Hue angle, and chromaticity, soluble solids (SS and titratable acidy (TA contents and alliinase activity. Bulbs storage reduced the fresh-cut weight loss during storage, until the senescence aggravating, observed in bulbs stored for 91 days. Minimally processed products

  7. Semen Quality of Post-Thawed Local Ram’s in Tris-Egg Yolk Extender with Different Glutathione Level

    Science.gov (United States)

    Solihati, N.; Rasad, S. D.; Setiawan, R.; Foziah, E. N.; Wigiyanti, E. T.

    2018-02-01

    The aims of this research were to find out the effect of glutathione level on semen quality of local ram and to find out the glutathione level that provide the best quality of local ram semen. This research use Completely Randomized Design (CRD) with five treatments of glutathione level (0 mM, 4 mM, 5 mM, 6 mM and 7mM) and was repeated for 10 times. Data were analyzed using analysis of varians (ANOVA) and differences between treatment was analyzed using Duncan test. The parameter were semen quality consist of motility, intact plasma membrane (IPM), abnormality, and recovery rate. Result of this research showed that glutathione level significantly (pegg yolk tris extender provide the best quality of local ram semen.

  8. Store and forward teledermatology

    Directory of Open Access Journals (Sweden)

    Kanthraj Garehatty

    2007-01-01

    Full Text Available Store and forward and real time or videoconferences are the two types of teledermatology services practiced. Dermatology and radio-diagnosis are visual specialties suited for store-and-forward teledermatology (SAFT. Advances in information technology, electronic instruments and biotechnology have revolutionized and brought changes in SAFT. Cellular phone, digital camera, personal digital assistants, Wi-Fi, Wi-Max and computer- aided-design software are incorporated to deliver the quality health care to remote geographic regions. Complete SAFT care equivalent to face-to-face consultation (Gold standard is essential. Health care providers in rural areas are the ′eyes′ for the consultants. Consultants to guide them should have a rapid periodic audit of visual parameters and dimensions of lesions. Given this background, this article reviews advances in 1 capture, store and transfer of images. 2 Computer Aided measurements of generalized and localized lesions and 3 the integration model to meet all the above two requirements in a centralized location. This process enables diagnosis, management, periodic assessment and complete follow-up care to achieve patient and physician satisfaction. Preservation of privacy and confidentiality of digital images is important. Uniform rules and regulations are required. Indian space research organization (ISRO, Government of India has demonstrated telemedicine pilot projects utilizing the satellite communication and mobile telemedicine units to be useful in meeting the health care needs of remote and rural India. we have to join hands with them to meet dermatology problems in rural areas.

  9. The effect of the probiotics Bacillus subtilis (PB6 on the selected indicators of the table eggs quality, fat and cholesterol

    Directory of Open Access Journals (Sweden)

    Jana Tkáčová

    2013-03-01

    Full Text Available 1024x768 The aim of this study was to determine the effect of dietary probiotics Bacillus subtilis (PB6 on egg weigh, egg mass weigh, egg fat content and cholesterol content in egg yolk in laying hens ISA Brown during two experiments. The probiotics where supplied to the laying hens for 42 days as preparation period before eggs samples collection. The eggs samples were collected during 6 days for the 1st and 2nd experiments after the hens reached the age of 34 and 61 weeks, respectively.  A total of 36 ISA Brown laying hens were divided into 2 treatment groups. Control group laying hens were fed a basal diet with no probiotic added. In group Bacillus subtilis, the basal diet was supplemented with the bacteria Bacillus subtilis (PB6 at 1 g/kg, min. 2.3*108 cfu/g. Dietary treatments did not significantly affect the egg weigh, internal egg content weigh, cholesterol content expressed by g/100 g of egg yolk.  Bacillus subtilis (PB6 supplementation significantly (p expressed as g/pc.  doi:10.5219/271 Normal 0 false false false EN-US X-NONE X-NONE

  10. The application of superweak bioluminescence on freshness degree of chicken egg

    International Nuclear Information System (INIS)

    Zhao Hongxia; Li Guochen; Li Qiangzheng; Li Juan

    2007-01-01

    The luminescence of chicken egg in storage is studied by a detection system of superweak bioluminescence. The results show that egg has the strongest vigour on the third day after it is laid, subsequently the luminescence presents decay with oscillation. These eggs, which have been stored for 3 days, are most suitable for hatching. Different eggs have different luminescence intensities depending on the vigour of the egg. The stronger the vigour of the egg is, the more intensive the luminescence is. Superweak bioluminescence as a comprehensive index of biology and biochemistry response can be used for inspecting the freshness degree of the egg, and the test is nondestructive and sensitive

  11. Effects of Cassava (Manihot Esculenta Crantz Root Meal in Diets Containing Corn Dried Distillers Grains With Solubles on Production Performance, Egg Quality, and Excreta Noxious Gas Emission in Laying Hens

    Directory of Open Access Journals (Sweden)

    XJ Lei

    Full Text Available ABSTRACT This study was conducted to evaluate effects of cassava (Manihot esculenta Crantz root meal (CRM in laying hen diets containing corn dried distiller grains with soluble (DDGS on production performance, egg quality, and excreta noxious gas emission. Two hundred and forty Hy-Line brown laying hens (40 weeks of age were randomly divided into 1 of 4 dietary treatments (10 replications with 6 hens per replication for 6 weeks. The dietary treatments were as follows: 1 corn-based diet (CON; 2 diet containing 10% CRM and 8% DDGS (CRM10; 3 diet containing 20% CRM and 8% DDGS (CRM20; 4 diet containing 30% CRM and 8% DDGS (CRM30. The inclusion of 30% CRM in the diet containing 8% DDGS significantly decreased (p0.05 the egg quality with the exception of decreased (p<0.05 egg yolk color when 30% of CRM was included in laying hens diet. CRM20 and CRM30 dietary treatments tended to decrease ammonia emission compared with CON dietary treatment (p=0.08. In conclusion, the results of the current study demonstrated that CRM may be incorporated to a concentration of 20% in laying hen diets containing 8% DDGS without detrimental effects on production performance and egg quality. Furthermore, the addition of 20% and 30% CRM in laying hen diets containing 8% DDGS tended to reduce the excreta ammonia emission.

  12. Hydraulic and water-quality data collection for the investigation of Great Lakes tributaries for Asian carp spawning and egg-transport suitability

    Science.gov (United States)

    Murphy, Elizabeth A.; Jackson, P. Ryan

    2013-01-01

    If the invasive Asian carps (bighead carp Hypophthalmichthys nobilis and silver carp Hypophthalmichthys molitrix) migrate to the Great Lakes, in spite of the efforts to stop their advancement, these species will require the fast-flowing water of the Great Lakes tributaries for spawning and recruitment in order to establish a growing population. Two Lake Michigan tributaries (the Milwaukee and St. Joseph Rivers) and two Lake Erie tributaries (the Maumee and Sandusky Rivers) were investigated to determine if these tributaries possess the hydraulic and water-quality characteristics to allow successful spawning of Asian carps. To examine this issue, standard U.S. Geological Survey sampling protocols and instrumentation for discharge and water-quality measurements were used, together with differential global positioning system data for georeferencing. Non-standard data-processing techniques, combined with detailed laboratory analysis of Asian carp egg characteristics, allowed an assessment of the transport capabilities of each of these four tributaries. This assessment is based solely on analysis of observed data and did not utilize the collected data for detailed transport modeling.

  13. PHENOTYPIC CORRELATIONS BETWEEN EGG WEIGHT AND ...

    African Journals Online (AJOL)

    IBUKUN

    variety) obtained from 60 eight weeks old Japanese quails of three different plumage colour varieties: Pharaoh Quail (Black), A & M white (White) and Manchurian Gold (Brown) at 8-14 weeks of age were used in this study. Eggs were examined for both internal and external egg quality traits.Data obtained were subjected to ...

  14. Single and combined effects of peppermint and thyme essential oils on productive performance, egg quality traits, and blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C).

    Science.gov (United States)

    Akbari, Mohsen; Torki, Mehran; Kaviani, Keyomars

    2016-03-01

    This study was conducted to evaluate the effects of adding peppermint essential oil (PEO), thyme essential oil (TEO), or their combination to diet on productive performance, egg quality traits, and blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C). Feed intake (FI), feed conversion ratio (FCR), egg weight (EW), egg production (EP), and egg mass (EM) were evaluated during the 56-day trial period using 120 Lohmann LSL-lite laying hens. Significant interactions between PEO and TEO on FCR, EP, and EM were observed (P hens fed the diets supplemented by the combined form of PEO and TEO compared to those fed the basal diet. Also, increased EW and FI were observed in the laying hens fed the diet added by PEO compared to the birds fed the basal diet. There were significant interactions between PEO and TEO on the serum level of cholesterol, shell thickness, and Hough unit of egg (P hens fed the diet supplemented by the combined form of PEO and TEO compared to those fed the basal diet. From the results of the present experiment, it can be concluded that diet supplementation by combined form of PEO and TEO could have beneficial effects on performance parameters of hens reared under cold stress condition.

  15. Single and combined effects of peppermint and thyme essential oils on productive performance, egg quality traits, and blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C)

    Science.gov (United States)

    Akbari, Mohsen; Torki, Mehran; Kaviani, Keyomars

    2016-03-01

    This study was conducted to evaluate the effects of adding peppermint essential oil (PEO), thyme essential oil (TEO), or their combination to diet on productive performance, egg quality traits, and blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C). Feed intake (FI), feed conversion ratio (FCR), egg weight (EW), egg production (EP), and egg mass (EM) were evaluated during the 56-day trial period using 120 Lohmann LSL-lite laying hens. Significant interactions between PEO and TEO on FCR, EP, and EM were observed ( P hens fed the diets supplemented by the combined form of PEO and TEO compared to those fed the basal diet. Also, increased EW and FI were observed in the laying hens fed the diet added by PEO compared to the birds fed the basal diet. There were significant interactions between PEO and TEO on the serum level of cholesterol, shell thickness, and Hough unit of egg ( P hens fed the diet supplemented by the combined form of PEO and TEO compared to those fed the basal diet. From the results of the present experiment, it can be concluded that diet supplementation by combined form of PEO and TEO could have beneficial effects on performance parameters of hens reared under cold stress condition.

  16. Response of laying hens to feeding low-protein amino acid-supplemented diets under high ambient temperature: performance, egg quality, leukocyte profile, blood lipids, and excreta pH

    Science.gov (United States)

    Torki, Mehran; Mohebbifar, Ahmad; Ghasemi, Hossein Ali; Zardast, Afshin

    2015-05-01

    An experiment was conducted to determine whether, by using a low-protein amino acid-supplemented diet, the health status, stress response, and excreta quality could be improved without affecting the productive performance of heat-stressed laying hens. The requirements for egg production, egg mass, and feed conversion ratio were also estimated using second-order equations and broken-line regression. A total of 150 Lohmann Selected Leghorn (LSL-Lite) hens were divided randomly into five groups of 30 with five replicates of six hens. The hens were raised for an 8-week period (52 to 60 weeks) in wire cages situated in high ambient temperature in an open-sided housing system. The five experimental diets (ME; 2,720 kcal/kg) varied according to five crude protein (CP) levels: normal-CP diet (control, 16.5 % CP) and low-CP diets containing 15.0, 13.5, 12.0, or 10.5 % CP. All experimental diets were supplemented with crystalline amino acids at the levels sufficient to meet their requirements. The results showed that under high temperature conditions, all productive performance and egg quality parameters in the birds fed with 15.0, 13.5, and 12.0 % CP diets were similar to those of birds fed with control diet (16.5 % CP), whereas feeding 10.5 % CP diet significantly decreased egg production and egg mass. Estimations of requirements were of 13.93 and 12.77 % CP for egg production, 14.62 and 13.22 % CP for egg mass, and 12.93 and 12.26 % CP for feed conversion ratio using quadratic and broken-line models, respectively. Egg yolk color index, blood triglyceride level, and excreta acidity were also significantly higher in birds fed with 12.0 and 10.5 % CP diets compared with those of control birds. The heterophil to lymphocyte ratio, as a stress indicator, was significantly decreased by 15.0, 13.5, and 12 % CP diets. On the basis of our findings, reducing dietary CP from 16.5 to 12.0 % and supplementing the diets with the essential amino acids showed merit for improving the

  17. The Fifty Year Rehabilitation of the Egg

    Directory of Open Access Journals (Sweden)

    Donald J. McNamara

    2015-10-01

    Full Text Available The 1968 American Heart Association announced a dietary recommendation that all individuals consume less than 300 mg of dietary cholesterol per day and no more than three whole eggs per week. This recommendation has not only significantly impacted the dietary patterns of the population, but also resulted in the public limiting a highly nutritious and affordable source of high quality nutrients, including choline which was limited in the diets of most individuals. The egg industry addressed the egg issue with research documenting the minimal effect of egg intake on plasma lipoprotein levels, as well as research verifying the importance of egg nutrients in a variety of issues related to health promotion. In 2015 dietary cholesterol and egg restrictions have been dropped by most health promotion agencies worldwide and recommended to be dropped from the 2015 Dietary Guidelines for Americans.

  18. Consumer behaviour in Apple's App Store

    OpenAIRE

    Ayalew, Romel

    2011-01-01

    Mobile applications stores such as Apple’s App Store and Google’s Android Market revolutionized the distribution of applications for mobile devices. However, with thousands of application submissions, limited testing resources and the lack of an effective filtering mechanism, application stores suffer from information overload and a risk of releasing poor quality applications that could create confusion to consumers and may seriously affect the App store markets. Thus concern has been raised ...

  19. The potential of Mythimna sequax Franclemont eggs for the production of Trichogramma spp. after cryopreservation in liquid nitrogen

    Directory of Open Access Journals (Sweden)

    Magda Fernanda Paixão

    Full Text Available ABSTRACT The cryopreservation of noctuid eggs in liquid nitrogen has proved be a promising tool in the mass production of Trichogramma, however studies into this technique have only just begun. This study evaluated the response of different densities of the female of Trichogramma pretiosum Riley to the parasitism of Mythimna sequax eggs stored and not stored in liquid nitrogen, and the performance of females reared only in cryopreserved eggs. The study evaluated the influence of the number of T. pretiosum females (4, 8 and 12 released to parasitise 40 M. sequax eggs, stored and not stored for 15 days in liquid nitrogen, as well as the performance of T. pretiosum females reared in eggs stored for three generations and females reared in non-stored eggs. Parasitism by T. pretiosum in stored eggs was 84%, twice the value obtained in previous studies. The emergence of parasitoids was greater than 95% in both experiments. The performance of females raised in stored eggs did not differ from that of females raised in non-stored eggs. The data show that the technique of cryopreservation of M. sequax eggs may be a viable alternative in the mass production of T. pretiosum.

  20. Avaliação da qualidade microbiológica de ovo integral pasteurizado produzido com e sem a etapa de lavagem no processamento Influence of washing in the microbial quality of pasteurized egg

    Directory of Open Access Journals (Sweden)

    Lina Casale Aragon-Alegro

    2005-09-01

    Full Text Available Microrganismos patogênicos podem contaminar ovos em diferentes estágios do processamento. Na tentativa de reduzir problemas decorrentes dessa contaminação por microrganismos patogênicos e/ou deteriorantes, os ovos são submetidos a processos como lavagem da casca e pasteurização. Vários estudos mostraram que alguns agentes químicos utilizados nessa lavagem podem causar danos físicos ao produto, facilitando a entrada de microrganismos através da casca. O nosso objetivo foi avaliar a eficiência da lavagem dos ovos, anteriormente à quebra, na redução da contaminação de ovo integral líquido. Foram colhidas amostras de ovo integral em 3 pontos da linha de produção, provenientes de ovos lavados e não lavados. Foram feitas pesquisa de Salmonella sp e enumeração de S. aureus, L. monocytogenes e bactérias aeróbias. Os resultados foram analisados no nível de significância de 5% e pôde-se concluir que o emprego, ou não, da etapa de lavagem não tem influência na qualidade microbiológica do produto final.Pathogenic microrganisms can contaminate eggs at different stages of processing. In an attempt to reduce problems resulting from contamination by pathogenic and/or deteriorating microrganisms, the eggs are submitted to processes such as washing the egg shell and pasteurization. Some studies have shown that chemical agents used to wash the egg shells can cause physical damage to the product, facilitating the entry of microrganisms through the shell. Our aim was to evaluate the efficiency of washing the eggs, prior to breaking them, to reduce the contamination of whole liquid egg (intended for pasteurization. Samples of whole eggs from both washed and unwashed eggs were taken at three points in the production line. Tests for Salmonella sp and enumeration of S. aureus, L. monocytogenes and aerobic bacteria were carried out. The results were analysed at the significant level of 5% and it was concluded that whether the eggs were

  1. Quality of fresh-cut avocado (Persea americana Mill. stored under different temperatures Qualidade de abacates (Persea americana Mill. minimally processados armazenados sob diferentes temperaturas

    Directory of Open Access Journals (Sweden)

    Ana Carla Marques Pinheiro

    2009-08-01

    Full Text Available The goal of this work was to evaluate the effect of different storage temperatures on the quality maintenance of fresh-cut 'Fortuna' avocado (Persea americana Mill.. The fruit was selected, washed and sanitized with sodium hypochlorite solution (190 ppm total residual chlorinee for 15 minutes. After that, the tip was cut and the fruit was also cut in halves, peeled and the pit removed, manually. Then the halves were immersed in 0.5% calcium chlorite + 0.5% cysteine solution for 2 minutes, to avoid darkening and packed in rigid plastic covered with 20 micrometer thick plastic wrap (PVC film with a permeability to O2, CO2 and water vapor of 15,000, 80,000 and 390 cm³/m²/day, respectively. The product was stored under 3 different temperatures 0, 5, 10ºC and evaluated at 5 different storege periods of 0, 2, 3, 5 and 6 days, in a randomized design in a 3x5 factorial. The storage of fresh-cut avocado at 5ºC is the best alternative because it determines better maintenance of quality of the avocado. These presented lower darkening of pulp, better scores for appearance and acceptability, lower softening and polyphenoloxidase activity, in comparison to those stored at 0 and 10ºC. The fresh-cut avocados stored at 5ºC presented a shelf life of 5 days, based, mainly on, appearance, score 7.3, sited between the concepts "like moderately" and "like very much" on a hedonic scale of 9 points and 86% of acceptability, at the end of 5 days of storage.Objetivou-se avaliar o efeito de diferentes temperaturas de armazenamento na manutenção da qualidade de abacates 'Fortuna' (Persea americana Mill. minimally processados. Os frutos foram lavados e sanificados em solução de hipoclorito de sódio (190 ppm de cloro residual total por 15 minutos. Posteriormente, efetuou-se a retirada da extremidade onde se insere o pedúnculo, o corte em metades, retirada do caroço e casca, manualmente. Em seguida, as metades foram imersas em solução com cloreto de cálcio 0

  2. The relationship of physical and chemical conditions of CEP diluent with egg yolk addition to bull spermatozoa quality before and after storage at temperaturof 4-5°C

    Science.gov (United States)

    Ducha, N.; Hariani, D.; Budijastuti, W.

    2018-01-01

    Storage of semen requires diluent to dilute semen and maintain sperm quality. One of the diluent for bull semen was CEP. The purpose of this study was to assess the association of bull spermatozoa quality with the physical and chemical conditions of CEP diluents with the addition of egg yolk before and after the storage process. The study used Limousin bull with 5 replications. The quality of spermatozoa included motility and viability. Physical and chemical conditions included the pH and osmolarity of the diluent. The motility of spermatozoa was observed under a light microscope with 200 X magnification at 37°C by two people. The viability of spermatozoa was observed under a light microscope with 400 X magnification with nigrosine eosin staining. Data were analyzed with ANOVA and continued Duncan’s test. Dilution pH was measured using pH indicator paper ranging from 6-8. The osmolarity of the diluent was measured by electrical osmolarity. The results showed that the addition of egg yolk in the CEP diluent decreased the pH and increased osmolartitas, but the quality of spermatozoa can be kept up to 8 days of storage. The conclusion in this study was the addition of egg yolk in the CEP diluent provided physical and chemical conditions that can maintain the quality of spermatozoa during storage at a temperature of 4-5 ° C.

  3. Efeito da suplementação enzimática no desempenho e qualidade dos ovos de poedeiras comerciais = Effects of the enzyme complex supplementation on the performance and egg quality of laying hens

    Directory of Open Access Journals (Sweden)

    Alice Eiko Murakami

    2007-04-01

    Full Text Available O objetivo deste trabalho foi determinar o efeito da utilização de um complexo multienzimático sobre o desempenho e qualidade dos ovos de poedeiras comerciais. Foram utilizadas 336 poedeiras comerciais, HyLine W36, com 29 semanas de idade distribuídas em um delineamento inteiramente casualizado com 7 tratamentos e 6 repetições de 8 aves cada. Os tratamentos consistiram de uma dieta basal suplementada com o complexo enzimático nos níveis de 400 ou 500 ppm com valorização do nível de proteína, energia metabolizável e aminoácidos do farelo de soja em 5/5/5, 7/7/7 e 7/7/9%, respectivamente. As variáveisestudadas foram: consumo de ração (g ave-1 dia-1, conversão alimentar (kg dz-1 de ovos, peso médio dos ovos (g, produção de ovos (%, gravidade específica (g mL-1, Unidade Haugh, coloração da gema, percentuais de sólidos totais, de gema, clara e casca (%,espessura da casca (mm e composição bromatológica das excretas. A adição do complexo multienzimático apresentou resultados produtivos e de qualidade dos ovos semelhantes à dieta controle.The present study aimed to evaluate the effects of a commercial enzyme complex on the performance and egg quality of commerciallaying hens. A total of 336 29-week old Hyline W36 layers were allocated to a completely randomized experimental design with seven treatments and six replications of eight birds each. The treatments consisted of the basal diet supplemented with inclusion of (500 or 400ppm, overestimating the percentages of protein, ME and amino acids of the soybean meal by 5:5:5, 7:7:7 and 7:7:9, respectively. The studied variables were: feed intake (g bird-1 day-1, feed:egg (kg feed-1 egg dozen-1, egg weight (g, egg laying percentage (hen day-1 specific gravity (g ml-1, Haugh Unit, color of the egg yolk, total solids percentage (%, egg yolk percentage, albumen and eggshell (%, eggshell thickness (mm and chemical compositionof hen manure. The inclusion of enzyme complex in the

  4. TO STORES USERS

    CERN Multimedia

    SPL Division

    2001-01-01

    Stores users are informed that the Stores (Central, Emergency window, Raw materials, Chemical products and Prévessin Self service stores) will be closed on Friday, 7 December owing to migration of the Stores computers to Windows 2000. Thank you for your understanding.

  5. Xenopus egg cytoplasm with intact actin.

    Science.gov (United States)

    Field, Christine M; Nguyen, Phuong A; Ishihara, Keisuke; Groen, Aaron C; Mitchison, Timothy J

    2014-01-01

    We report optimized methods for preparing Xenopus egg extracts without cytochalasin D, that we term "actin-intact egg extract." These are undiluted egg cytoplasm that contains abundant organelles, and glycogen which supplies energy, and represents the least perturbed cell-free cytoplasm preparation we know of. We used this system to probe cell cycle regulation of actin and myosin-II dynamics (Field et al., 2011), and to reconstitute the large, interphase asters that organize early Xenopus embryos (Mitchison et al., 2012; Wühr, Tan, Parker, Detrich, & Mitchison, 2010). Actin-intact Xenopus egg extracts are useful for analysis of actin dynamics, and interaction of actin with other cytoplasmic systems, in a cell-free system that closely mimics egg physiology, and more generally for probing the biochemistry and biophysics of the egg, zygote, and early embryo. Detailed protocols are provided along with assays used to check cell cycle state and tips for handling and storing undiluted egg extracts. © 2014 Elsevier Inc. All rights reserved.

  6. Competitiveness of the EU egg sector, base year 2015

    NARCIS (Netherlands)

    Horne, van P.L.M.; Bondt, N.

    2017-01-01

    In this report the impact of reducing or removing import levies on the competitiveness of the EU egg sector is studied, for both shell eggs and whole egg powder. As a result of the costs of transportation, import levies and the effects on product quality and safety, there will barely be imports of

  7. Dietary tea polyphenol supplementation improved egg production performance, albumen quality, and magnum morphology of Hy-Line Brown hens during the late laying period.

    Science.gov (United States)

    Wang, Xiao-Cui; Wang, Xiao-Hong; Wang, Jing; Wang, Hao; Zhang, Hai-Jun; Wu, Shu-Geng; Qi, Guang-Hai

    2018-02-15

    The aim of this study was to investigate how dietary supplementation of tea polyphenols (TP) and tea catechins (TC) affect laying performance, albumen quality, ovomucin composition, and magnum morphology of laying hens in the late phase of production. Two hundred seventy Hy-Line Brown laying hens (64 wk old) were assigned to a basal diet (the control), the basal diet supplemented with 200 mg/kg tea polyphenols (TP200) or 200 mg/kg tea catechins (TC200). Each treatment had 6 replicates with 15 hens each. The feeding trial lasted 10 wks. Over the course of the trial, dietary supplementation with TP200 significantly increased the egg production (EP) and improved the feed conversion ratio (FCR) in wk 6 to 10 and wk 1 to 10 (P hens fed TP200 were higher than those of hens fed the control diet at wks 8 and 10 (P 0.05). The SDS-PAGE analysis indicated that bands of the ovomucin fractions in the TP200 group had the highest intensity compared with those of the control and TC200 groups. Compared with the control, there was a significant increase in protein sulfhydryl (SH) content of the albumen in the TP200 group at the end of experiment, while a significant decrease in protein carbonyl content and protein surface hydrophobicity (P hens. In addition, TP rather than TC could improve the health status of the magnum for aged layers.

  8. Effect of different concentration of fish oil in skim milk-egg yolk extenders on post- thawed semen qualities of Kalang swamp buffalo bull

    Directory of Open Access Journals (Sweden)

    Abdul Malik

    2018-01-01

    Full Text Available Objective: To explore the effect of fish oil at different concentrations on post-thawed semen of Kalang swamp buffalo. Methods: A total of 4 Kalang swamp buffalo bulls with 3-5 years of age and weighed about 340-360 kg were slected. Semen was regularly collected from these buffalo bulls once a week by an artificial vagina. Fish oil was supplementary at the dosages of 0 mg (control, 50 mg, 100 mg, 150 mg, and 200 mg to the extender (skim milk-egg yolk. Fresh, pre-freezing and frozen semen were thawed at 37 °C and evaluated for motility, viability, morphology, and plasma integrity of membrane. Results: The study results indicated that before freezing, supplementation of fish oil at the dose of 150 mg in the extender had significantly motility. And a significant (P<0.05 increase was observed in viability and motility of post-thawed semen at the dose of 150 mg fish oil, which was in difference with other treatment groups. Conclusions: Addition of 150 mg fish oil in the extender could be positive for the enhancement of the quality of post-thawed semen of Kalang swamp buffaloes.

  9. Have eggs. Will travel

    DEFF Research Database (Denmark)

    Kroløkke, Charlotte

    2015-01-01

    Feminist scholars have critically questioned the practices and ethics of reproductive mobility. While the reproductive mobility of fertility patients has been foregrounded, little is known of egg donor mobility including the experiences of travelling internationally to donate eggs. Based on written...... stories and photographic material provided by forty-two egg donors, this article uses feminist cluster analysis and the concept of eggpreneurship to illustrate how global egg donors negotiate reproductive agency and choice when they travel internationally to donate their eggs. In their stories, global egg...

  10. Encapsulation technology of MR6 spent fuel and quality analysis of the EK-10 and WWR-SM spent fuel stored more than 30 years in wet conditions

    Energy Technology Data Exchange (ETDEWEB)

    Borek-Kruszewska, E.; Bykowski, W.; Chwaszczewski, S.; Czajkowski, W.; Madry, M. [Institute of Atomic Energy, Otwock -Swierk (Poland)

    2002-07-01

    The research reactor MARIA has been in operation for more than twenty years and all the spent fuel assemblies used since the first commissioning of the reactor are stored in wet facility on site. The present paper deals with the spent fuel MR-6 encapsulation technology in MARIA reactor. The encapsulated spent MR-6 fuel will be stored under water in the same pool unless some other solution is available. The capsules made of stainless steel are capable to accommodate one MR-6 fuel assembly. The encapsulation process is performed in the hot cell by the MARIA reactor. The spent fuel having its leg cut off is loaded to the transport cylinder manually and next transferred to a trolley. The trolley is moving to a position directly below the entrance to the hot cell and the spent fuel is entering the hot cell. The spent fuel assembly is then put into the drying cell. Dried out spent fuel is moved into the capsule mounted on the grip of the machine. Next, the capsule lid is pressed in and welded. After the leak test and filling up with helium the capsule returns from the hot cell to the pool. The hermetic capsule is sunk back into the water and positioned in the separator . The results presented earlier show, that the limiting time of WWR-SM and Ek-10 type spent fuel residence in wet storage is about 40-45 years. Therefore, the systematic quality investigation of all Ek-10 fuel elements and WWR-SM fuel assemblies discharged from EWA reactor in the period of 1959-1969 was performed. Altogether, about 2500 Ek-10 fuel elements and 47 WWR-SM fuel assemblies were investigated. The results of these investigations are presented in the present work. The sipping test, visual investigation and ultrasonic techniques were used for that purpose. The radioactive isotope Cs-137 was used as the indicator of fission product release from the fuel assembly. Taking into account the value of Cs-137 release from damaged WWR-SM fuel assembly the criteria of damaged fuel assembly were proposed. It

  11. Impact of Environment and Ontogeny on Relative Fecundity and Egg Quality of Female Oysters (Crassostrea virginica) from Four Sites in Northern Chesapeake Bay.

    Science.gov (United States)

    Glandon, Hillary Lane; Michaelis, Adriane K; Politano, Vincent A; Alexander, Stephanie T; Vlahovich, Emily A; Reece, Kimberly S; Koopman, Heather N; Meritt, Donald W; Paynter, Kennedy T

    2016-12-01

    Resource allocation to reproduction is a primary physiological concern for individuals, and can vary with age, environment, or a combination of both factors. In this study we quantified the impact of environment and individual age on the reproductive output of female oysters Crassostrea virginica. We determined the relative fecundity, egg total lipid content, and overall and omega-3/omega-6 (ω3/ω6) fatty acid signatures (FAS) of eggs spawned by female oysters over a 2-year period (n = 32 and n = 64). Variation was quantified spatially and ontogenetically by sampling young and old oyster populations from two rivers in Chesapeake Bay, totaling four collection sites. During Year 1, when oysters underwent oogenesis in different locations, overall and ω3/ω6 egg FAS varied significantly by river, with no significant differences observed in the FAS of oysters by age in Year 1. In Year 2, when oysters from different sites underwent oogenesis in a single location, no significant differences in the overall egg FAS or ω3/ω6 egg FAS by river or age were observed. These findings suggest that oysters integrate environment into their reproductive output, but that time spent growing at a specific location (in this case, represented by oyster age) plays a relatively minor role in the biochemical composition of oyster eggs. These results have consequences for our understanding of how resources are allocated from the female oyster to eggs and, more generally, the impact of environment and ontogeny on reproductive physiology.

  12. Use of irradiation for decontamination of chicken and spray-dried whole egg powder from Salmonellae

    International Nuclear Information System (INIS)

    Koehler, B.; Huebner, H.

    1989-01-01

    The effect of 60 Co gamma irradiation was investigated on the concentration of Salmonella (S.) typhimurium in artificially contaminated chicken carcasses and on the number of S. tennessee and S. agona in artificially contaminated spary-dried whole egg powder and liquid whole egg. Irradiation of carcasses and of liquid whole egg was carried out at deep frozen conditions between -10 0 C and -18 0 C and whole egg powder at 15-20 0 C. The irradiation doses used where between 0.05 and 8.0 kGy. The D 10 -value of S. typhimurium in broiler chicks ranged between 0.57 and 0.74 and of S. agona and S. tennessee, resp., amounted to 0.95 and 1.07 in spray dried whole egg powder and 0.47 and 0.53, resp., in whole egg content. Irradiation caused drastic reduction of physiological microflora in chicken carcasses. By radiation treatment using a dose of 4.0 kGy, germ count reductions by 3-5 decimal powers were achieved. Resistance of microbes increased in following succession: Pseudomonas spp., Salmonella spp., other Enterobacteriaceae spp., Micrococcus spp., Flavobacteriaceae spp., yeasts. Bacillus spp., Streptomyces spp., fungi. Results of microbiological and sensorial examinations allow following conclusions: (1) irradiation is highly effective against Salmonella. (2) Irradiation dose of 4.0 kGy is able to kill about 1 million Salmonellae per chicken. This guarantees safe elimination of naturally occurring Salmonellae in broiler chicken carcasses. (3) Irradiation of chicken carcasses up to 4.0 kGy causes no deterioration of quality, however storage longer than 4 months deteriorates sensorial qualities more than of unirradiated carcasses. (4) Whole egg powder tolerates a maximal irradiation dose of 2.0 kGy without deterioration of sensorial food quality. (5) Irradiation dose of 1.0 kGy eliminates about 100 to 1000 Salmonellae per kg whole egg powder, if the egg powder is stored 3 to 5 weeks after irradiation. (author)

  13. 21 CFR 160.115 - Liquid eggs.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Liquid eggs. 160.115 Section 160.115 Food and... CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.115 Liquid eggs. (a) Liquid eggs, mixed eggs, liquid whole eggs, mixed whole eggs are eggs of the domestic...

  14. Quail egg yield and quality of the Coturnix coturnix response to the addition level of agave inulin to the drinking water

    Directory of Open Access Journals (Sweden)

    Luis Jorge Pérez de la Mora

    2014-05-01

    Full Text Available To assess the effect of agave inulin addition to drinking water, one hundred (65 days old Coturnix coturnix japonica hens were divided randomly into four groups with five birds per cage. Twenty five birds were assigned to each of the following treatments: i control; addition of agave inulin in the drinking water at; ii 2.0% (w/w, iii 4.0%; and iv 6%. The feeding trial lasted for six weeks. Inulin increased (P0.05. The egg weight was similar among treatments (average 12.70 g and varied slightly with the inulin level (P=0.0537. The egg shell (percentage of the egg was not influenced by the inulin. But, the calcium concentration in the eggshell of the present trial varied with the level on the agave inulin in the drinking water (P0.05. Then, the agave inulin addition to the drinking water increases the egg yield of Japanese quails.

  15. A comparison of fatty acid composition and quality aspects of eggs and larvae from cultured and wild broodstock of common sole ( Solea solea L . )

    DEFF Research Database (Denmark)

    Lund, Ivar; Steenfeldt, Svend Jørgen; Suhr, Karin

    2008-01-01

    compared with respect to fatty acid (FA) composition, egg size, fertilization rate and hatching rate. Based on a multivariate analysis of the FA profiles, it was possible to discriminate between culture and wild inheritance. Eggs from cultured broodstock had high levels of C20:1(n-9), C18:2(n-6) and C18......:3(n-3), whereas eggs from wild fish had high levels of C16:1(n-7), C20:4(n-6) and C20:5(n-3). Differences in FA profiles were most likely related to dietary differences. Fertilization and hatching rates were generally low and lowest in eggs from cultured broodstock, but not related to FA composition...

  16. Thidiazuron affects the quality of 'Gala' apples stored under controlled atmosphere Thidiazuron afeta a qualidade de maçãs 'Gala' armazenadas sob atmosfera controlada

    Directory of Open Access Journals (Sweden)

    Ricardo Fabiano Hettwer Giehl

    2010-04-01

    Full Text Available This work was carried out aiming to evaluate the effect of thidiazuron (TDZ on the quality of 'Gala' apples stored under controlled atmosphere (CA conditions. Plants were sprayed at full bloom with TDZ at 0, 10, 20, or 40g ha-1 (a.i.. Harvested fruits were then stored in CA with 1.0+2.5, 1.5+2.5 and 1.5+5.0 (kPa O2+kPa CO2, both at 0.5°C. In addition, the partial pressure of 1.5kPa of O2+2.5kPa of CO2 was also evaluated at -0.5°C. Higher flesh firmness and titratable acidity was obtained by applying 20 or 40g ha-1 TDZ. Furthermore, these TDZ doses decreased the respiration rate as well as the occurrence of flesh breakdown, mealiness and decay. The application of TDZ at doses ranging from 20 to 40g ha-1 maintains higher fruit quality for up to 8 months under CA. In addition, the storage of 'Gala' apples under CA with 1.0kPa O2+2.5kPa CO2 at 0.5°C results in higher flesh firmness and titratable acidity. Moreover, this CA condition reduces the incidence of flesh breakdown, mealiness and postharvest decay in 'Gala' apple fruits.O objetivo deste trabalho foi avaliar o efeito da aplicação de thidiazuron (TDZ na qualidade de maçãs 'Gala' armazenadas em condições de atmosfera controlada (AC. Avaliou-se o efeito do TDZ nas doses de 0, 10, 20 e 40g ha-1 (i.a., aplicadas no pleno florescimento. Após a colheita, os frutos foram armazenados em condições de AC com 1,0+2,5; 1,5+2,5 ou 1,5+5,0 (kPa de O2+kPa de CO2, ambas a 0,5°C. Além disso, a pressão parcial de 1,5kPa de O2+2,5kPa de CO2 também foi avaliada a -0,5°C. Doses de TDZ entre 20 e 40g ha-1 mantiveram maior firmeza da polpa e acidez titulável. Além disso, essas mesmas doses reduziram a atividade respiratória e a incidência de degenerescência da polpa, de polpa farinhenta e de podridões. A aplicação pré-colheita de TDZ, especialmente em doses entre 20 e 40g ha-1, melhora a qualidade de maçãs 'Gala' armazenadas em AC por até oito meses. Em relação às condições de AC

  17. Shopping in discount stores

    DEFF Research Database (Denmark)

    Zielke, Stephan

    2014-01-01

    quarters of intentions to shop in discount stores. Value perception has the strongest total effect, which is partly mediated by enjoyment, shame and guilt. Attributions influence the shopping intention indirectly via value perception and emotions. The inferior quality attribution has the strongest total......This paper analyzes the impact of price-related attributions, emotions and value perception on the intention to shop at grocery discounters in an integrated framework. Moderating effects of price consciousness are also analyzed. The results show that the proposed model explains almost three...... effect, followed by the efficiency of the business model attribution. The unfairness to stakeholders and the tricks in price communication attribution mostly influence the shopping intention for less price-conscious customers....

  18. Quality assurance of teleconsultations in a store-and-forward telemedicine network - obtaining patient follow-up data and user feedback

    Directory of Open Access Journals (Sweden)

    Richard eWootton

    2014-11-01

    Full Text Available User surveys in telemedicine networks confirm that follow up data are essential, both for the specialists who provide advice and for those running the system. We have examined the feasibility of a method for obtaining follow-up data automatically in a store-and-forward network. We distinguish between follow-up, which is information about the progress of a patient and is based on outcomes, and user feedback, which is more general information about the telemedicine system itself, including user satisfaction and the benefits resulting from the use of telemedicine. In the present study, we were able to obtain both kinds of information using a single questionnaire. During a 9-month pilot trial in the MSF telemedicine network, an email request for follow-up was sent automatically by the telemedicine system to each referrer exactly 21 days after the initial submission of the case. A total of 201 requests for follow-up were issued by the system and these elicited 41 responses (a response rate of 20%. The responses were largely positive. For example, 95% of referrers found the advice helpful, 90% said that it clarified their diagnosis, 94% said that it assisted with management of the patient and 95% said that the telemedicine response was of educational benefit to them. Analysis of the characteristics of the referrers who did not respond, and their cases, did not suggest anything different about them in comparison with referrers who did respond. We were not able to identify obvious factors associated with a failure to respond. Obtaining data by automatic request is feasible. It provides useful information for specialists and for those running the network. Since obtaining follow-up data is essential to best practice, one proposal to improve the response rate is to simplify the automatic requests so that only patient follow-up information is asked for, and to restrict user feedback requests to the cases being assessed each month by the quality assurance

  19. Single and combined effects of zinc and cinnamon essential oil in diet on productive performance, egg quality traits, and blood parameters of laying hens reared under cold stress condition

    Science.gov (United States)

    Torki, Mehran; Akbari, Mohsen; Kaviani, Keyomars

    2015-09-01

    This study was conducted to evaluate the effects of adding zinc (Zn), cinnamon essential oil (Ci), or their combination in diet on productive performance, egg quality, and blood parameters of laying hens reared under cold stress condition (8.8 ± 3 °C). Feed intake (FI), feed conversion ratio (FCR), egg weight (EW), egg production (EP), and egg mass (EM) were evaluated during the 56-day trial period using 120 Lohmann LSL-Lite laying hens. Significant interactions between Ci and Zn on FCR, EW, EP, or EM were observed ( P hens fed the diets including Ci and Zn (as single or combined form) compared to those fed the basal diet. There were significant interactions between Ci and Zn on the serum level of glucose and triglycerides as well as plasma concentration of zinc ( P hens fed the diets including Ci and Zn (together) compared to those fed the basal diet. From the results of the present experiment, it can be concluded that diet supplementation by the combined form of Ci and Zn could have beneficial effects on performance and blood parameters of hens reared under cold stress condition.

  20. Effects of adding aqueous extract of Tribulus terrestris to diet on productive performance, egg quality characteristics, and blood biochemical parameters of laying hens reared under low ambient temperature (6.8 ± 3 °C).

    Science.gov (United States)

    Akbari, Mohsen; Torki, Mehran

    2016-06-01

    A study was conducted using 144 laying hens to evaluate the effects of adding aqueous extract of Tribulus terrestris to diets on productive performance, egg quality traits, and some blood parameters of laying hens reared under cold stress condition (6.8 ± 3 °C). The birds were randomly assigned to each of four dietary treatments (C, T1, T2, and T3) with six replicate cages of six birds. Diet inclusion of aqueous extract of T. terrestris at the rate of 10, 20, and 30 ml/Lit offered to groups T1, T2, and T3, respectively, while group C served as the control diet with no addition. Feed intake (FI), feed conversion ratio (FCR), egg weight (EW), egg production (EP), and egg mass (EM) were evaluated during the 42-day trial period. The EP and EM increased, whereas FCR decreased (P terrestris has beneficial effects on productive performance of laying hens reared under cold stress condition.

  1. Food crystallization and eggs.

    Science.gov (United States)

    Egg products can be utilized to control crystallization in a diverse realm of food products. Albumen and egg yolk can aid in the control of sugar crystal formation in candies. Egg yolk can enhance the textural properties and aid in the control of large ice crystal formation in frozen desserts. In...

  2. Impact of egg disinfection of hatching eggs on the eggshell microbiome and bacterial load

    DEFF Research Database (Denmark)

    Olsen, R.; Kudirkiene, E.; Thofner, I.

    2017-01-01

    Disinfection of hatching eggs is essential to ensure high quality production of broilers. Different protocols are followed in different hatcheries; however, only limited scientific evidence on how the disinfection procedures impact the microbiome is available. The aim of the present study...... was to characterize the microbiome and aerobic bacterial load of hatching eggs before disinfection and during the subsequent disinfection steps. The study included a group of visibly clean and a group of visibly dirty eggs. For dirty eggs, an initial wash in chlorine was performed, hereafter all eggs were submitted...... to two times fumigation and finally spray disinfection. The eggshell microbiome was characterized by sequencing of the total amount of 16S rRNA extracted from each sample, consisting of shell surface swabs of five eggs from the same group. In addition, the number of colony forming units (cfu) under...

  3. Payment for egg donation and surrogacy.

    Science.gov (United States)

    Steinbock, Bonnie

    2004-09-01

    This article examines the ethics of egg donation. It begins by looking at objections to noncommercial gamete donation, and then takes up criticism of commercial egg donation. After discussing arguments based on concern for offspring, inequality, commodification, exploitation of donors, and threats to the family, I conclude that some payment to donors is ethically acceptable. Donors should not be paid for their eggs, but rather they should be compensated for the burdens of egg retrieval. Making the distinction between compensation for burdens and payment for a product has the advantages of limiting payment, not distinguishing between donors on the basis of their traits, and ensuring that donors are paid regardless of the number or quality of eggs retrieved.

  4. Effects of feeding transgenic corn with mCry1Ac or maroACC gene to laying hens for 12 weeks on growth, egg quality and organ health.

    Science.gov (United States)

    Zhong, R Q; Chen, L; Gao, L X; Zhang, L L; Yao, B; Yang, X G; Zhang, H F

    2016-08-01

    The objective of the present study was to investigate the effect of feeding two transgenic corn lines containing the mCry1Ac gene from Bacillus thuringiensis strain (BT-799) and the maroACC gene from Agrobacterium tumefaciens strain (CC-2), respectively, on growth, egg quality and organ health indicators. Expression of the mCry1Ac gene confers resistance to Pyrausta nubilalis and the maroACC gene confers tolerance to herbicides. Healthy hens (n=96 placed in cages; 3 hens/cage) were randomly assigned to one of four corn-soybean meal dietary treatments (8 cages/treatment) formulated with the following corn: non-transgenic near-isoline control corn (control), BT-799 corn, CC-2 corn and commercially available non-transgenic reference corn (reference). The experiment was divided into three 4-week phases (week 1 to 4, week 5 to 8 and week 9 to 12), during which hens were fed mash diets. Performance (BW, feed intake and egg production) and egg quality were determined. Following slaughter at the end of 12 weeks of feeding (n=8/treatment), carcass yield and organ weights (heart, liver, spleen, lung, kidneys, stomach and ovary) were recorded; organs and intestines were sampled for histological analysis. Analysis of serum biochemistry parameters to assess the liver and kidney function were performed. No differences in BW, egg production and production efficiency were observed between hens consuming the control diet and hens consuming the BT-799 or CC-2 diet. Haugh unit measures and egg component weights were similar between the control and test groups. Carcass yield was not affected by the diet treatment. Similar organosomatic indices and serum parameters did not indicate the characteristics of organ dysfunction. All observed values of the BT-799 and CC-2 groups were within the calculated tolerance intervals. This research indicates that the performance, egg quality, organ health and carcass yield of laying hens fed diets containing the BT-799 or CC-2 corn line were similar

  5. NACS Store Planning Manual.

    Science.gov (United States)

    College Store Journal, 1979

    1979-01-01

    Topics discussed by the NACS Store Planning/Renovation Committees in this updated version of the college store renovation manual include: short- and long-range planning, financial considerations, professional planning assistance, the store's image and business character, location considerations, building requirements, space requirements, fixtures,…

  6. Ostrich eggs geometry

    Directory of Open Access Journals (Sweden)

    Šárka Nedomová

    2013-01-01

    Full Text Available Precise quantification of the profile of egg can provide a powerful tool for the analysis of egg shape for various biological problems. A new approach to the geometry of a Ostrich’s egg profile is presented here using an analysing the egg’s digital photo by edge detection techniques. The obtained points on the eggshell counter are fitted by the Fourier series. The obtained equations describing an egg profile have been used to calculate radii of curvature. The radii of the curvature at the important point of the egg profile (sharp end, blunt end and maximum thickness are independent on the egg shape index. The exact values of the egg surface and the egg volume have been obtained. These quantities are also independent on the egg shape index. These quantities can be successively estimated on the basis of simplified equations which are expressed in terms of the egg length, L¸ and its width, B. The surface area of the eggshells also exhibits good correlation with the egg long circumference length. Some limitations of the most used procedures have been also shown.

  7. Intraspecific variation in egg size and egg composition in birds: effects on offspring fitness.

    Science.gov (United States)

    Williams, T D

    1994-02-01

    involve variation in lipid content, and therefore in egg 'quality.' The adaptive significance of variation in egg composition is considered; females may adjust egg composition facultatively to maximise the benefits to their offspring of increased reproductive investment. 5. Considerations for future research are discussed with particular emphasis on experimental studies and the application of new techniques.

  8. Prevalence of high-risk egg-preparation practices in restaurants that prepare breakfast egg entrées: an EHS-Net study.

    Science.gov (United States)

    Lee, Robin; Beatty, Mark E; Bogard, April K; Esko, Michael-Peter; Angulo, Frederick J; Selman, Carol

    2004-07-01

    Salmonella enterica serotype Enteritidis (SE) is a common cause of foodborne illness in the United States. Foods prepared with raw shell eggs have often been associated with SE outbreaks. The federal government published the Egg Safety Action Plan in December 1999 that called for reduction of egg-preparation practices that may contribute to the survival and proliferation of SE. In seven states, an interview and brief site evaluation of 153 restaurants that prepare eggs during all hours of operation was conducted by the Environmental Health Specialists Network to determine the prevalence of such practices. Fifty-four percent (83 of 153) of restaurants pooled raw shell eggs not intended for immediate service. These pooled eggs were held a median of 4 h for scrambled eggs, 5.5 h for omelets, and 6 h for pancakes and French toast. Nearly 26% (39 of 152) of restaurants reported storing eggs at room temperature, and 5% (7 of 152) stored eggs on ice or in cold-water baths before cooking. Generally, eggs were cooked to 72 to 83 degrees C, which is above the recommended final cook temperature of 63 to 68 degrees C. Employees reported sanitizing utensils used to prepare eggs less than once every 4 h in 42% (57 of 136) of restaurants. Several areas were identified in which further emphasis might reduce egg-associated SE infections in accordance with Healthy People 2010 goals.

  9. Improving cold storage of subitaneous eggs of the copepod Acartia tonsa Dana from the Gulf of Mexico (Florida, USA)

    DEFF Research Database (Denmark)

    Drillet, Guillaume; Lindley, L.C.; Michels, A.

    2007-01-01

    (kanamycin sulphate and oxytetracycline HCl) on extending the shelf life of cold-stored subitaneous Acartia tonsa eggs. Also, egg development effects on the survival of the eggs were tested. Glucose did not have any significant effects on the survival of the eggs. However, the addition of antibiotics......%. However, long exposure to high concentrations of antibiotics was lethal to the copepod eggs. After more than 30 days of exposure to 100 mg L-1 of oxytetracycline, the survival of the eggs was lower than in the untreated samples. After 45 days, oxytetracycline-treated eggs (100 mg L-1) presented a hatching...

  10. Customers' willingness to purchase new store brands

    OpenAIRE

    Zielke, Stephan; Dobbelstein, Thomas

    2007-01-01

    Purpose – The purpose of this paper is to identify factors influencing customers’ willingness to purchase new store brands. Design/methodology/approach – The paper develops a 3 £ 3 design to investigate the impact of price and quality positioning on the willingness to purchase new store brands in five product groups. A total of 990 respondents completed a questionnaire about store brand perception, aspects of purchasing behavior and willingness to buy. Data are analyzed with analysis...

  11. Contributions to the Knowledge of Qualitative Parameters for Egg Powder

    Directory of Open Access Journals (Sweden)

    Roxana Nicoleta Gavril (Rațu

    2014-11-01

    Full Text Available The current paper is focused on the quality indexes of integral egg powder stored in different microclimate conditions. Failure of temperature and air moisture content leads to depreciation of egg powder quality in a more accelerated way than at eggs. From those reasons we aimed to study the evolution of qualitative parameters during storage in different environmental conditions. For that, we constituted 3 batches were we have determine the sensorial characteristics of the product, solubility and pH value. In addition with those determinations were effectuated a series of chemical analysis, tracking water content which was determined by drying stove, dry matter (% and content in mineral substances (mg/100g which was determined through atomic absorption spectrometric method (AAS with a GBC-AVANTA spectrophotometer type. The first observed modifications, after sensorial control, were mentioned in the 90th day at batch Lexp-2 which presented modifications of aspect and consistency (instable agglomerations. Regarding pH value this one suffer modifications during those 180 days of storage, the recorded values at final being higher with 1.84% at batch Lc, 8.91% at batch Lexp-1 and with 10.38% at batch Lexp-2. Regarding the chemical content of analysed product, experimental factors influenced only water content respectively the dry matter content, determinations being made on mineral substances (Fe, Zn, Ca, Mg. In conclusion we can say that the failure of pack type and of microclimate factors assured during storage leads to depreciation of the product in a quite short time.  

  12. Nutrition environments in corner stores in Philadelphia.

    Science.gov (United States)

    Cavanaugh, Erica; Mallya, Giridhar; Brensinger, Colleen; Tierney, Ann; Glanz, Karen

    2013-02-01

    To examine the availability, quality, and price of key types of healthy and less-healthy foods found in corner stores in low-income urban neighborhoods and the associations between store characteristics and store food environments. A sample of 246 corner stores was selected from all corner stores participating in the Philadelphia Healthy Corner Store Initiative (HCSI). The Nutrition Environment Measures Survey for Corner Stores (NEMS-CS) was used to assess the availability, quality, and price of foods and beverages in 11 common categories between February and May, 2011. NEMS-CS measures were completed in 233 stores, 94.7% of the 246 stores approached. The healthier options were significantly less available in all food categories and often more expensive. Baked goods, bread, chips and cereals were sold at nearly all stores, with significantly fewer offering low-fat baked goods (5.7%, pbread (56.2%, pfood environment and dietary choices among low-income urban populations. Availability of certain healthier foods could be improved. Copyright © 2012 Elsevier Inc. All rights reserved.

  13. The Market of Eggs, Consumption, and Consumer Behavior

    OpenAIRE

    Mustafa Pllana; Iliriana Miftari; Njazi Bytyqi; Vetim Hyseni

    2015-01-01

    Eggs are a traditional food with a high consumption per head even in economically developed countries with high living standard. Due to “cholesterol phobia†efforts were made to decrease the cholesterol content in the egg, but without success. Thus began research to improve the nuntrional quality of eggs, reposition them in safety and healthy food products. Today in markets there are organic eggs, vegetarian, nutrient enhaced eggs (omega-3, vitamin enhanced), for what is in order to expect...

  14. Egg introduction: differential allergic responses

    OpenAIRE

    Dosanjh, Amrita

    2017-01-01

    Amrita Dosanjh Medical Center, Rady Childrens Hospital, San Diego, CA, USA Abstract: The use of egg protein preparations in clinical trials to reduce the incidence of egg allergy among infants includes a number of preparations of egg. These include whole egg, egg white protein, and egg yolk preparations. The study of the differential immune responses to these allergenic proteins in comparison is suggested as a future research area of investigation. Keywords: food allergy, egg allergy, clinica...

  15. Influence of natural and synthetic carotenoids on the color of egg yolk

    Directory of Open Access Journals (Sweden)

    Fernanda Papa Spada

    2016-06-01

    Full Text Available ABSTRACT Carotenoids are incorporated into the diet of laying hens in order to modify the yolk color. A natural source of carotenoids in tropical countries is annatto, which could be used in the diets of hens. This study aimed to evaluate the addition of natural (annatto and synthetic carotenoids to the diet of laying hens (commercial and alternative and their effects on yolk color and consumer sensory perception of fresh and stored eggs obtained from two different preparations (boiled and fried. Physicochemical analysis of proximate composition, thiobarbituric acid reactive substances (TBARS, emulsion activity and instrumental color were performed. Cooking caused significant alterations to the moisture in the preparations and this may have directly affected the color intensity, influencing factors related to egg appearance. In this study, 85 % of the panelists indicated that yolk color is an important attribute of the product’s quality. There was no antioxidant effect of the carotenoids in raw eggs. Synthetic additives should be better dosed to obtain the desired effect. Storage did not alter the proximate composition of the eggs.

  16. A protocol for storage and long-distance shipment of Mediterranean fruit fly (Diptera: Tephritidae) eggs. II. Assessment of the optimal temperature and the substrate for male-only production

    International Nuclear Information System (INIS)

    Maman, E.; Caceres, C.

    2007-01-01

    The present study has been conducted to assess the effect and interaction of various storage substrates and conditions on eggs of the Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann). Tests were carried out with the genetic sexing strain VIENNA 8/D53, a strain that carries a temperature sensitive lethal (tsl) mutation that allows the selective killing of female zygotes. This study identifies strategies to enhance the storage and transport conditions through assessment of effect on egg, pupal and adult survival in order to facilitate the establishment of satellite mass rearing facilities for the production of male medflies. Eggs were immersed in two different substrates and stored at different temperatures and for different time periods. Findings from this study suggest that egg storage periods, and to some extent, the storage substrates have significant effects on pupal and adult survival. For 72-h storage periods, the eggs preserved in agar solution at 10 deg. C produced the most pupae. There was an inverse relationship between the concentration of dissolved oxygen in the substrate during storage and the quality and survival of the stored/transported eggs. Apparently low levels of dissolved oxygen reduce metabolic rates, allowing the storage period to be prolonged. (author) [es

  17. Odd-Boiled Eggs

    Science.gov (United States)

    Kaminsky, Kenneth; Scheman, Naomi

    2010-01-01

    At a Shabbat lunch in Madrid not long ago, the conversation turned to the question of boiling eggs. One of the guests mentioned that a Dutch rabbi he knew had heard that in order to make it more likely that boiled eggs be kosher, you should add an egg to the pot if the number you began with was even. According to the laws of Kashruth, Jews may not…

  18. Information for Stores Users

    CERN Multimedia

    Logistics Group

    2004-01-01

    As the FARNELL Catalogue CAPACITORS, RESISTORS and POTENTIOMETERS have now been integrated into the CERN Stores Catalogue (SCEM Groups 10 and 11) they can now be obtained via an EDH 'Material Request' like any other Stores item. N.B. The Farnell 'Order code' is one of the key-words that make it easier to find items in the Stores Catalogue. Logistics Group FI Department

  19. Heritability of body surface temperature in hens estimated by infrared thermography at normal or hot temperatures and genetic correlations with egg and feather quality

    NARCIS (Netherlands)

    Loyau, T.; Zerjal, T.; Rodenburg, T.B.; Fablet, J.; Tixier-Boichard, M.; Pinard-van der Laan, M.H.; Mignon-Grasteau, S.

    2016-01-01

    Exposure of laying hens to chronic heat stress results in loss of egg production. It should be possible to improve hen resilience to chronic heat stress by genetic selection but measuring their sensitivity through internal temperature is time consuming and is not very precise. In this study we

  20. Distributed energy store railgun

    International Nuclear Information System (INIS)

    Marshall, R.A.

    1991-01-01

    This paper reports that when the limiting case of a distributed energy store railgun is analyzed, i.e., the case where the space between adjacent energy stores become indefinitely small, three important results are obtained. First, the shape of the current pulse delivered by each store is sinusoidal and an exponential tail. Second, the rail-to-rail voltage behind the rear-most active store approaches zero. Third, it is not possible to choose parameters in such a way that capacitor crowbars can be eliminated

  1. Egg origin determination efforts

    International Nuclear Information System (INIS)

    Horvath, A.; Futo, I.; Vodila, G.; Palcsu, L.

    2012-01-01

    Complete text of publication follows. As a co-operation with the Poultry Product Board, egg and drinking water samples were received in order to investigate whether the country of origin of the egg can be determined based on its stable isotope composition with the aim of market protection of the Hungarian eggs against the mislabelled foreign ones. The scientific background is that drinking water of egg laying hens is assumed to reflect the composition of regional precipitation, and it is also an input data in the process of egg formation. In the first sampling, altogether 23 sets of egg and drinking water samples were received from different production sites covering the whole area of Hungary. The egg white samples were vacuum distilled and frozen out by liquid nitrogen at -196 deg C. The process was monitored by two vacuum gauges. Water frozen out together with the drinking water samples was measured were measured by a Thermo Finnigan Delta PLUS XP isotope ratio mass spectrometer using a GasBench II peripheral unit equipped with a GC-autosampler. As a second issue, additionally, elemental composition of egg shells were also performed for series of Hungarian, Czech and Polish egg samples by energy dispersive X-ray fluorescence. The drinking waters fit well to the Global Meteoric Water Line indicating their precipitation origin. It was experienced that the water in egg white gets enriched compared to the drinking water (Δ 18 O = -4.9 ± 1.0 per thousand and Δ D = -21.8 ± 6.4 per thousand), however, this shift is independent of the type of the hens, since the mean shifts in the eggs of Tetra and Hy-line hens are similar within error bar. For more depleted drinking water, the shift of the egg white was higher than for more enriched ones. This can be due to the contribution of the nutriment isotopic composition. The water isotope composition of the Hungarian eggs investigated was δ 18 O = -4.8 - -7.3 per thousand and δD = -46.0 - -70.7 per thousand, therefore egg

  2. Effect of limestone particle size on egg production and eggshell ...

    African Journals Online (AJOL)

    Different limestone particle sizes had no effect on any of the tested egg production and eggshell quality parameters. These results suggested that larger particles limestone are not necessarily essential to provide sufficient Ca2+ to laying hens for egg production and eggshell quality at end-of-lay, provided that the dietary Ca ...

  3. Theoretical and empirical studies on temperature and moisture loss of hatching eggs during the pre-incubation period

    NARCIS (Netherlands)

    Meijerhof, R.

    1994-01-01

    In the Netherlands, approximately 800 million hatching eggs per year are produced on highly specialized broiler breeder farms. On this farms, the eggs are produced and stored for several days. Normally once or twice a week the eggs are collected from the farms and transported to the

  4. 21 CFR 160.180 - Egg yolks.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Egg yolks. 160.180 Section 160.180 Food and Drugs... CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.180 Egg yolks. (a) Egg yolks, liquid egg yolks, yolks, liquid yolks are yolks of eggs of the domestic hen so...

  5. Ensuring Microbiological Safety of Fresh Eggs by Using Gamma Irradiation

    International Nuclear Information System (INIS)

    Hammad, A. A.; Swailam, H.M.; Aly, W. F.

    2008-01-01

    Egg shell sanitizing practices are necessary to improve microbiological safety of fresh eggs. In this work, fifteen fresh eggs samples of each (Balady, White and Brown eggs) were collected from different local supermarkets to evaluate their microbiological quality. The results indicated that Balady eggs were higher in microbial population in comparison with the two other varieties. Salmonella spp. was detected in 9 (60%) samples of Balady eggs. The effect of gamma irradiation at dose of 0, 2, 3 and 4 kGy on microbiological quality of Balady eggs during storage at 4±1 degree C for 35 days was studied. The effects of irradiation and storage on total cholesterol, and total carotenoids contents in Balady eggs were also investigated. The results showed that irradiation at 3 kGy reduced total aerobic bacterial counts. Coliform bacteria, E. coli and Salmonella spp. were completely eliminated. Total cholesterol and total carotenoids were decreased in yolk egg as a result of irradiation. Treated Balady eggs with irradiation dose of 3 kGy were efficient and sufficient for ensuring safety, maintain quality and extend shelf-life.

  6. Reciprocal crosses between Alabio and Mojosari ducks : early egg production

    Directory of Open Access Journals (Sweden)

    L.H Prasetyo

    2000-12-01

    Full Text Available alternative to increasing productivity and production efficiency. Crossbreeding has been used widely for increasing productivity, and in this experiment Alabio and Mojosari ducks were crossed reciprocally in order to evaluate their egg production and egg quality, when compared to their parental breeds. Four genotypes AA, AM, MA and MM were compared and each consisted of 50 layer ducks. Each animal was kept in individual cage, and individual egg production and egg quality were recorded. They were given layer feed containing 20% crude protein and 3000 kcal/kg metabolisable energy. Results showed that the crossbred ducks (AM and MA laid eggs earlier than their parental breeds (AA and MM, and MA laid earlier than AM. The weight of first eggs of the crossbreeds did not differ significantly, AM was the same as MM and MA the same as AA. For the body weight at first lay, MA and AM weighed in between their parental breeds, AA was the heaviest and then followed by MA, AM and MM. For the 3-month egg production, MA ducks laid significantly more egg than the other 3 genotypes, and this is related to the age of first lay being the earliest. In terms of egg quality such as egg weight, yolk color, weight and thickness of shell, weight of the white and HU value, the crossbred ducks showed quality in between AA and MM. The AM ducks tended to be closer to MM and MA closer to AA, and this shows a strong influence of maternal effects. The average level of heterosis for weight of first egg is 2.41% and for 3-month egg production is 2.1%, but for MA cross the heterosis level is 11.69% for egg production. The overall results showed that crossbreeds between Alabio and Mojosari have the potential in improving production traits in the effort to increase productivity and production efficiency.

  7. Desensitization to a whole egg by rush oral immunotherapy improves the quality of life of guardians: A multicenter, randomized, parallel-group, delayed-start design study.

    Science.gov (United States)

    Itoh-Nagato, Naoka; Inoue, Yuzaburo; Nagao, Mizuho; Fujisawa, Takao; Shimojo, Naoki; Iwata, Tsutomu

    2018-04-01

    Patients with food allergies and their families have a significantly reduced health-related quality of life (QOL). We performed a multicenter, randomized, parallel-group, delayed-start design study to clarify the efficacy and safety of rush oral immunotherapy (rOIT) and its impact on the participants' daily life and their guardians (UMIN000003943). Forty-five participants were randomly divided into an early-start group and a late-start group. The early-start group received rOIT for 3 months, while the late-start group continued the egg elimination diet (control). In the next stage, both groups received OIT until all participants had finished 12 months of maintenance OIT. The ratio of the participants in whom an increase of the TD was achieved in the first stage was significantly higher in the early-start group (87.0%), than in the late-start group (22.7%). The QOL of the guardians in the early-start group significantly improved after the first stage (65.2%), in comparison to the late-start group (31.8%). During 12 months of rOIT, the serum ovomucoid-specific IgE levels, the percentage of CD203c + basophils upon stimulation with egg white, and the wheal size to egg white were decreased, while the serum ovomucoid-specific IgG4 levels were increased. However, approximately 80% of the participants in the early-start group showed an allergic reaction during the first stage of the study, whereas none of the patients in the late-start group experienced an allergic reaction. rOIT induced desensitization to egg and thus improved the QOL of guardians; however, the participants experienced frequent allergic reactions due to the treatment. Copyright © 2017 Japanese Society of Allergology. Production and hosting by Elsevier B.V. All rights reserved.

  8. Predicting Commissary Store Success

    Science.gov (United States)

    2014-12-01

    stores or if it is possible to predict that success. Multiple studies of private commercial grocery consumer preferences , habits and demographics have...appropriate number of competitors due to the nature of international cultures and consumer preferences . 2. Missing Data Four of the remaining stores

  9. Storing up trouble

    International Nuclear Information System (INIS)

    Townsley, M.

    1992-01-01

    Scottish Nuclear have applied for permission to build a temporary ground-level dry store for spent fuel at Torness. However, Nirex's failure to find a suitable site for a long-term repository could mean that the Torness store will be less temporary than planned. (author)

  10. Information for stores users

    CERN Multimedia

    Logistics Group - FI Department

    2005-01-01

    The Farnell catalogue can now be accessed from the Material Request form on EDH in addition to the CERN Stores catalogue. Users can order Farnell equipment as well as standard Stores equipment at the same time using a single document, the EDH Materials Request form. The Materials Request form offers users items from both the internal 'Stores' catalogue and the external 'Farnell' catalogue, all of which may be ordered on the same form. The system automatically forwards orders for standard Stores equipment to the CERN Stores and those for Farnell equipment to Farnell. The delivery time is 48 hours in both cases. Requests for materials are routed for approval in accordance with the standard EDH routing procedures. Logistics Group FI Department

  11. Oocyte cryopreservation for donor egg banking.

    Science.gov (United States)

    Cobo, Ana; Remohí, José; Chang, Ching-Chien; Nagy, Zsolt Peter

    2011-09-01

    Oocyte donation is an efficient alternative to using own oocytes in IVF treatment for different indications. Unfortunately, 'traditional' (fresh) egg donations are challenged with inefficiency, difficulties of synchronization, very long waiting periods and lack of quarantine measures. Given the recent improvements in the efficiency of oocyte cryopreservation, it is reasonable to examine if egg donation through oocyte cryopreservation has merits. The objective of the current manuscript is to review existing literature on this topic and to report on the most recent outcomes from two established donor cryobank centres. Reports on egg donation using slow freezing are scarce and though results are encouraging, outcomes are not yet comparable to a fresh egg donation treatment. Vitrification on the other hand appears to provide high survival rates (90%) of donor oocytes and comparable fertilization, embryo development, implantation and pregnancy rates to traditional (fresh) egg donation. Besides the excellent outcomes, the ease of use for both donors and recipients, higher efficiency, lower cost and avoiding the problem of synchronization are all features associated with the benefit of a donor egg cryobank and makes it likely that this approach becomes the future standard of care. Oocyte donation is one of the last resorts in IVF treatment for couples challenged with infertility problems. However, traditional (fresh) egg donation, as it is performed today, is not very efficient, as typically all eggs from one donor are given to only one recipient, it is arduous as it requires an excellent synchronization between the donor and recipient and there are months or years of waiting time. Because of the development of an efficient oocyte cryopreservation technique, it is now possible to cryo-store donor (as well as non-donor) eggs, maintaining their viability and allowing their use whenever there is demand. Therefore, creating a donor oocyte cryobank would carry many advantages

  12. Animal welfare and eggs

    DEFF Research Database (Denmark)

    Andersen, Laura Mørch

    and private good attributes of different types of eggs. We find that the estimated correlations are consistent with the levels of animal welfare, and that consumers perceiving a stronger connection between animal welfare and the organic label have higher willingness to pay for organic eggs, even when we...

  13. Egg Bungee Jump!

    Science.gov (United States)

    Fitzgerald, Mike; Brand, Lance

    2004-01-01

    In this article, the authors present an egg bungee jumping activity. This activity introduces students to ways that engineers might apply calculations of failure to meet a challenge. Students are required to use common, everyday materials such as rubber bands, string, plastic bags, and eggs. They will apply technological problem solving, material…

  14. Are all eggs equal?

    NARCIS (Netherlands)

    Nangsuay, A.

    2016-01-01

    Hatching eggs, supplied to hatcheries are originating from different origins varying in breed, strain, and breeder age. These hatching eggs can be different in size, composition and eggshell properties, which might influence nutrient and O2 availability and consequently could affect embryonic

  15. Spinning Eggs and Ballerinas

    Science.gov (United States)

    Cross, Rod

    2013-01-01

    Measurements are presented on the rise of a spinning egg. It was found that the spin, the angular momentum and the kinetic energy all decrease as the egg rises, unlike the case of a ballerina who can increase her spin and kinetic energy by reducing her moment of inertia. The observed effects can be explained, in part, in terms of rolling friction…

  16. The egg consumption of the average household in Italy.

    Science.gov (United States)

    Prencipe, Vincenza; Rizzi, Valentina; Giovannini, Armando; Migliorati, Giacomo

    2010-01-01

    A survey was conducted over a one-year period by means of telephone interviews with 7 991 Italian households to establish the domestic consumption of eggs, the distribution by source of supply, seasonal variations and storage and preparation methods used. Eggs are mainly purchased from large retailers (53%), followed by small retailers (25.2%), direct purchase from producers (16%), and local or itinerant markets (5.8%). It was found that 69.9% of households buy packaged eggs; 92% of households store them in the refrigerator, although this percentage varies considerably, according to the type of presentation (packaged or loose) and the number of eggs bought. Italian households mainly eat eggs cooked (48.9%), followed by partly cooked (35.0%) and raw (16.1%).

  17. The egg consumption of the average household in Italy

    Directory of Open Access Journals (Sweden)

    Giacomo Migliorati

    2010-09-01

    Full Text Available A survey was conducted over a one-year period by means of telephone interviews with 7 991 Italian households to establish the domestic consumption of eggs, the distribution by source of supply, seasonal variations and storage and preparation methods used. Eggs are mainly purchased from large retailers (53%, followed by small retailers (25.2%, direct purchase from producers (16%, and local or itinerant markets (5.8%. It was found that 69.9% of households buy packaged eggs; 92% of households store them in the refrigerator, although this percentage varies considerably, according to the type of presentation (packaged or loose and the number of eggs bought. Italian households mainly eat eggs cooked (48.9%, followed by partly cooked (35.0% and raw (16.1%.

  18. Níveis de proteína bruta e de aminoácidos sulfurados totais sobre o desempenho, a qualidade dos ovos e a excreção de nitrogênio de poedeiras de ovos marrons Levels of protein and sulfur amino acids on performance, egg quality and nitrogen excretion of brown egg laying hens

    Directory of Open Access Journals (Sweden)

    Ana Cláudia Pavan

    2005-04-01

    Full Text Available O experimento foi conduzido com o objetivo de maximizar a produção e a qualidade dos ovos e minimizar a excreção de nitrogênio nas excretas de poedeiras no final do primeiro ciclo de produção, por meio do fornecimento de aporte adequado de proteína bruta (PB e aminoácidos sulfurados totais (AAST na dieta. Foram utilizadas 432 poedeiras Isa Brown, com 52 semanas de idade, distribuídas em delineamento inteiramente casualizado, em esquema fatorial 3 x 3 (PB e AAST e nove tratamentos (14 e 0,57; 14 e 0,64; 14 e 0,71; 15,5 e 0,57; 15,5 e 0,64; 15,5 e 0,71; 17 e 0,57; 17 e 0,64; 17 e 0,71 % de PB e AAST, respectivamente, com seis repetições de oito aves cada. A duração do experimento foi de 140 dias. Foram avaliadas as características de desempenho, qualidade dos ovos e excreção de nitrogênio nas excretas. A única característica de desempenho influenciada pelos tratamentos foi o peso dos ovos, que apresentou os maiores valores para as combinações de 15,5 e 0,71; 17 e 0,71; 15,5 e 0,64; 14 e 0,71 e 17 e 0,64% de PB e AAST, respectivamente. Não foram observadas diferenças significativas para consumo de ração, porcentagem de postura e de ovos quebrados, massa de ovos, conversão alimentar por dúzia e por massa de ovos e mortalidade. Para os parâmetros de qualidade dos ovos, foram observadas diferenças significativas apenas para as porcentagens de gema e de albúmem. A excreção de nitrogênio foi maior nas aves alimentadas com as rações contendo 17% de PB. Pode-se sugerir que a ração contendo 14% de PB e 0,57% de AAST pode ser utilizada, sem prejuízos no desempenho e na qualidade dos ovos, e ainda contribui para a redução da excreção de nitrogênio no ambiente e do custo da ração.The aim of the study was to maximize the egg production and quality and minimize nitrogen excretion of laying hens in the end of the first production cycle through the supply of adequate levels of crude protein (CP and total sulfur amino

  19. EFFECTS OF DIFFERENT SUPPLEMENTS INCLUSION OF THE ENRICHED DIET ON PRODUCTIVE PERFORMANCE AND EGG STRUCTURE

    Directory of Open Access Journals (Sweden)

    Natasha Trajan Gjorgovska

    2016-04-01

    Full Text Available Nutritional manipulation and genetic selection for egg size and production may lead to changes in egg components. This experiment was carried out to analyze the egg structure parameters of eggs produced by Hisex Brown laying hens fed with diet with different supplements inclusion. The intensity of egg production was significantly higher in the groups fed with enriched feed with iodine (90.00%, vitamin E (90.00% and selenium (91.98%, and significantly lower in the group fed with DHA inclusion feed (76.00% in respect to the control group (82.00%, confidence interval of 95%. Concerning diet supplemented with selenium and diet supplemented with vitamin E, the egg yolk weight was statistically different compared with the control group (confidence interval of 95%. The yolk weight averaged 1.80 g and 1.29 g more than yolk weight in the control eggs, respectively. The egg shell weight was statistically different in diet enriched with iodine compared with the control. The egg shell weight averaged 1.48 g less per egg for the eggs enriched with iodine with 17.45% less underweight than the control eggs. Enriched eggs offer consumer a variety of value-added options for their egg purchase. Although enriched eggs may provide consumers with a specific quality attribute or healthful ingredient, they do not appear to provide quality and value in a traditional sense as defined by the standards of quality and grade.

  20. Effects of wheat cultivar, metabolizable energy level, and xylanase supplementation to laying hens diet on performance, egg quality traits, and selected blood parameters

    Directory of Open Access Journals (Sweden)

    Masoud Mirzaee

    2014-10-01

    Full Text Available A 2 x 2 x 2 factorial arrangement of treatments was conducted to evaluate the effects of two dietary apparent metabolizable energy (AME levels (2,720 and 2,580 kcal kg-1 diet and enzyme (0 and 0.3 g kg-1 diet, Grindazym® GP 15,000 with mostly xylanase activity supplementation on the performance of laying hens fed diets based on two wheat cultivars (Marvdasht and Sardari. Experimental diets were formulated to have a constant energy to protein ratio and were fed to 65-wk-old Lohmann LSL-Lite laying hens for 7 wk. The lower level of AME reduced egg production and egg mass (p<0.05 and increased feed conversion ratio (p<0.05. Enzyme addition increased feed intake of the birds fed a diet with Sardari cultivar (p<0.05 but had no effect on feed intake of the birds fed a diet with Marvdasht cultivar (p>0.05. Nevertheless, birds receiving diets based on Marvdasht cultivar had higher feed intake and egg mass than that of those receiving diets based on Sardari cultivar (p<0.05. The birds fed diets based on Marvdasht cultivar produced less undesired eggs and had better yolk color as compared with the birds fed diets based on Sardari cultivar (p<0.05. The serum concentration of glucose increased by enzyme supplementation when birds receiving lower AME level (p<0.05. These results indicate that enzyme supplementation may have a positive effect on the feed intake of laying hens when fed on wheat-based diets; however, this effect is cultivar dependent and does not necessarily mean that enzyme supplementation always benefit production.

  1. Hen Egg as an Antioxidant Food Commodity: A Review.

    Science.gov (United States)

    Nimalaratne, Chamila; Wu, Jianping

    2015-09-24

    Intake of antioxidants through diet is known to be important in reducing oxidative damage in cells and improving human health. Although eggs are known for their exceptional, nutritional quality, they are not generally considered as antioxidant foods. This review aims to establish the importance of eggs as an antioxidant food by summarizing the current knowledge on egg-derived antioxidants. Eggs have various natural occurring compounds including the proteins ovalbumin, ovotransferrin and lysozyme in egg white, as well as phosvitin, carotenoids and free aromatic amino acids in egg yolk. Some lipophilic antioxidants such as vitamin E, carotenoids, selenium, iodine and others can be transferred from feed into egg yolk to produce antioxidant-enriched eggs. The bioactivity of egg antioxidants can be affected by food processing, storage and gastrointestinal digestion. Generally thermal processing methods can promote loss of antioxidant properties in eggs due to oxidation and degradation, whereas gastrointestinal digestion enhances the antioxidant properties, due to the formation of new antioxidants (free amino acids and peptides). In summary, in addition to its well-known nutritional contribution to our diet, this review emphasizes the role of eggs as an important antioxidant food.

  2. Radionuclides in Canada goose eggs

    International Nuclear Information System (INIS)

    Rickard, W.H.; Sweany, H.A.

    1975-01-01

    Low levels of radionuclides were measured in Canada goose eggs taken from deserted nests from Columbia River islands on the Energy Research and Development Administration's Hanford Reservation. Potassium-40, a naturally occurring radionuclide, was the most abundant radionuclide measured in egg contents and egg shell. Strontium-90 was incorporated into egg shells and cesium-137 into inner egg contents. Manganese-54, cobalt-60, and zinc-65 were more abundant in inner egg contents than in egg shell. Cerium-144 was detected in egg shell but not in inner shell

  3. Information for stores users

    CERN Multimedia

    2007-01-01

    From next week, the SFS UNIMARKET (tooling) catalogue will be accessible using the Material Request form on EDH in addition to the CERN Stores catalogue and those of existing suppliers. Users will now be able to place orders from the SFS catalogue using the Material Request form on EDH. Note: The system automatically forwards orders for standard Stores equipment and those for SFS equipment, placed using the same Material Request form, to the CERN Stores and SFS respectively. In both cases, the maximum delivery time will be 48 hours. Requests for equipment will be routed for approval in accordance with standard EDH routing procedures. Logistics Group FI Department

  4. INFORMATION FOR STORES USERS

    CERN Multimedia

    2007-01-01

    From next week, the SFS UNIMARKET (tooling) catalogue will be accessible using the Material Request form on EDH in addition to the CERN Stores catalogue and those of existing suppliers. Users will now be able to place orders from the SFS catalogue using the Material Request form on EDH. Note: The system automatically forwards orders for standard Stores equipment and those for SFS equipment, placed using the same Material Request form, to the CERN Stores and SFS respectively. In both cases, the maximum delivery time will be 48 hours. Requests for equipment will be routed for approval in accordance with standard EDH routing procedures. Logistics Group FI Department

  5. Information for stores users

    CERN Multimedia

    2006-01-01

    The Radiospares Catalogue is now accessible from the Material Request page on EDH in the same way as the CERN Stores Catalogue. This means that users can order Radiospares equipment by completing an EDH Materials Request form. N.B.: The system will automatically forward orders for standard Stores equipment to the CERN Stores and those for Radiospares equipment to Radiospares. In both cases the delivery time will be a maximum of 48 hours. Requests for materials will be routed for approval in accordance with the standard EDH routing procedures. Logistics Group FI Department

  6. INFORMATION FOR STORES USERS

    CERN Multimedia

    SPL Division

    1999-01-01

    You can now make Material Request from CERN Stores over the WEB :CERN Home/Administrative Tools/EDH/Material Requestor https://edh.cern.ch/Document/MAGVia the Stores Catalogue : CERN Home/Administrative Tools/Stores Catalogueor http://edhcat.cern.ch/In both cases, you need to enter your EDH login and password.For more details, you can consult the Quick Reference Guide on :http://edh.cern.ch/doc/quickrefguides.htmlor obtain a printed version from AIS Support at tel: 79933or e-mail to: ais.support@cern.chSPL DivisionLogistics Group

  7. Preservasi Semen Kambing Peranakan Etawa dalam Pengencer Tris dan Sitrat Kuning Telur dengan Penambahan Sodium Dodecyl Sulphate (THE PRESERVATION OF ETTAWA GRADE BUCK SEMEN IN TRIS AND CITRATE EGG YOLK DILUENTS SUPPLEMENTED WITH SODIUM DODECYL SULPHATE

    Directory of Open Access Journals (Sweden)

    Nur Hidayati

    2015-10-01

    Full Text Available This study was conducted to determineSDS concentration also to compare Tris egg yolk and citrateegg yolk on the quality of ettawa grade chilled semen. The study consist of two experiments. The firstexperiment was to determine the best SDS concentration in Tris egg yolk diluents and the second experimentwas to compare the SDS suplementation in tris and citrate egg yolk in the quality of ettawa grade chilledsemen. The semen were collected from three bucks, immediately after collection the semen evalutedmacro and microscopycally. Semen demonstrate more than 70% motility and less than 10% spermatozoaabnormality, individually divided into four tube, each tube was diluted in egg yolk supplemented with 0;0,025; 0,05; and 0.075% SDS then stored at 5°C for 72 hours. The quality of chilled semen was observefor motility and viability every 12 hours. Result demonstrated that 0.05% SDS was the best concentrationcompared to others. In the second experiment,the semen were diluted in four different diluents, it wereTris egg yolk (TEY, Tris egg yolk with 0.05% SDS (TEYS, citrate egg yolk (CEY and citrate egg yolk with0.05% SDS (CEYS. Result demonstrated that the mean value of motility and viability of spermatozoa inTEYSdiluents (67.08 ± 6.43% and77.07 ± 6.78% was higher (p<0.05 than CEYS (60.42 ± 9.05% and72.31± 7.45%, TEY (59.23 ± 9.41% and71.21 ± 8.56% and CEY (53.45 ± 11.33% and67.74 ± 8.90%. In conclusion,supplementation of 0.05% SDS in TEY was maintained best sperm quality compared to other diluentsduring preservation.

  8. Viability of quail embryos and nestlings from the eggs exposed to gamma-radiation, vibration and storage

    International Nuclear Information System (INIS)

    Mishchenko, V.F.; Shafirkin, A.V.

    1986-01-01

    The viability of quail embryos and nestlings from the incubation eggs exposed (in) to gamma-radiation at a dose of 300 cGy and stored for 15 days or (ii) to gamma-radiation at a dose of 300 cGy and stored for 30 days or (iii) to vibration with the acute egg end oriented contrary to the vibration front and stored for 30 days did not decrease as compared to that of the controls stored for the same time period. The viability diminished if the radiation dose was increased to 600-1200 cGy of if the egg orientation during vibration was changed

  9. In p nduce protoc d spaw cols of wning hormo of Liza ones w egg a ...

    African Journals Online (AJOL)

    SAM

    environmental conditions and resistance to disease and stresses. Thin-lipped ... ship between egg quality and fatty acid content of eggs. Successful fertilization ...... mullet (Mugil cephalus L.) with fractional salmon pituitary extract. J. Fish Biol.

  10. Information for stores users

    CERN Multimedia

    2006-01-01

    The Bossard catalogue is now accessible alongside the CERN Stores catalogue from the Material Request form on EDH. Users will thus be able to order Bossard equipment using the EDH Materials Request form. As a reminder, the system automatically forwards orders for standard Stores equipment to the CERN Stores and those for Bossard equipment to Bossard. In both cases the delivery time will be a maximum of 48 hours. Requests for materials will be routed for approval in accordance with the standard EDH routing procedures. Some items will remain available from the emergency desk in the event of urgent requests. These items will be visible in the Stores catalogue even if they cannot be purchased via the EDH material request form. Logistics Group FI Department

  11. Provenance Store Evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Paulson, Patrick R.; Gibson, Tara D.; Schuchardt, Karen L.; Stephan, Eric G.

    2008-03-01

    Requirements for the provenance store and access API are developed. Existing RDF stores and APIs are evaluated against the requirements and performance benchmarks. The team’s conclusion is to use MySQL as a database backend, with a possible move to Oracle in the near-term future. Both Jena and Sesame’s APIs will be supported, but new code will use the Jena API

  12. PENGARUH PEMBERIAN GULA MERAH DAN LAMA PENYIMPANAN TERHADAP KADAR GIZI DAN RASA TELUR ITIK ASIN [The Effect of Palm Sugar and Storage on Nutrient Content and Taste of Salted Ducks Egg

    Directory of Open Access Journals (Sweden)

    Yenni Yusriani

    2004-12-01

    Full Text Available This research used 150 duck eggs age one as subject day. There were two factors analyzed here. The first was the amount of palm sugar which consisted of 25 grams, 50 grams, and 75 grams. The second factor were the storage duration which consisted of 3, 4, and 5 weeks. The nutrient content parameters measured were rates protein, fat and ash content. Sensory quality parameters measured were color and taste. The analysis showed that in processing/making salted duck egg, palm sugar addition influenced protein content significantly (Fc = 7,0 > Ftab = 4,5 fat content ( Fc 67,3 > Ftab= 8,7 and ash content (Fc = 64,6 > F tab = 8,7 very significantly. However, organoleptic test showed that palm sugar addition did not influenced color and taste of salted duck egg significantly. Storage duration influenced protein content significantly (Fc= 6,9 F tab = 8,7 but did not significantly influenced ash content (Fc = 3,5 < Ftab = 4,46. Storage duration also influenced taste of salted duck egg, but did not for its color. The interaction of treatment between palm sugar addition and storage duration just influenced fat content of salted duck egg significantly. The salted duck egg made by addition 75 grams palm sugar and stored 5 weeks (A3B3 the highest content of fat. The salted ducks eeg made by addition of 25 grams palm sugar and stored duration produced the salted ducks egg with high content of fat and ash. Organoleptic test indicated that the panelis preferred the salted taste duck egg made by addition of palm sugar 25 grams and storaged for 3 weeks having reddish yellow color.

  13. Ensuring microbiological safety of commercial eggs by gamma irradiation

    International Nuclear Information System (INIS)

    Hammad, A.A; Swailam, H.M.; Abd El-Rahim, E.A.; Shallan, M.A; Aly, W.F.

    2009-01-01

    Egg shell sanitizing practices are necessary to improve microbiological safety of fresh eggs. In this work, fifteen fresh eggs samples of each (balady, white and brown eggs) were collected from different local supermarkets to evaluate their microbiological quality. The results indicated that balady eggs were higher in microbial population in comparison with the two other varieties. Salmonella spp. was detected in 9 (60%) samples of balady eggs. The effect of gamma irradiation at dose of 0,2,3 and 4 kGy on microbiological quality of balady eggs during storage at 4± 1 deg c for 35 days as well as on total cholesterol , ph, and total carotenoids contents were also investigated. The results showed that irradiation at 3 kGy reduced total aerobic bacterial counts. Whereas completely eliminated coliform bacteria, E.coli and salmonella spp. Total cholesterol and total carotenoids were decreased in yolk egg. irradiation dose of 3 kGy were efficient and sufficient for ensuring safety, maintain quality and extend shelf-life of balady eggs

  14. Impacts of radiation processing on physicochemical properties of Table Eggs

    International Nuclear Information System (INIS)

    Farag, M. D. H.; Abdul Azeem, A. M.

    2012-12-01

    This study investigated the effect of gamma irradiation on pathogens, quality, and functional properties of shell eggs. Using intact, fresh while and brown shell eggs, inoculated with 10 9 colony-forming units (cfu) of S enteritidis and S, typhimurium. The effect of gamma-irradiation at doses 2,4 and 6 kGy of gamma irradiation on bacteriologic and population and physical characteristics (Haugh units and yolk color), chemical composition (moisture, crude protein, crude fat and ash), the rheological changes (viscosity), pH and protean solubility of the eggs were determinate d. Results showed that 2 kGy, the number of S, enteritidis and eggs internal quality as freshness as measured by albumen height and the number of hugh units, and yolk color index were all significantly reduced with increasing irradiation doses. On significant change was found after irradiation in egg white or yolk in the chemical composition (moisture, crude protein, crude fat and ash). After irradiation, the foaming ability and foam capacity of egg white were increasing radiation doses> The viscosity of egg white and yolk decreased with increasing doses of irradiation. The pH of the egg white and yolk increasing doses of radiation dose. The protein salability decreased significantly in egg white and yolk with increasing radiation dose. These Results Suggest that gamma irradiation reduce the freshness of shell eggs and improving important functional properties such as to foaming ability and foaming capacity. Gamma irradiation can also be applied to the egg breaking process sine irradiation reduces the viscosity of egg white and yolk, which can allow egg whites and yolks to be separated with greater efficiency. (Author)

  15. Eggs on Ice

    DEFF Research Database (Denmark)

    Herrmann, Janne Rothmar; Kroløkke, Charlotte

    2018-01-01

    While Denmark is widely known as a global exporter of cryopreserved sperm, Danish women’s eggs face a very different fate. This paper combines legal and rhetorical analyses with the concept of sociotechnical imaginaries. In establishing the genealogy of the sociotechnical imaginaries that shaped...... Danish regulation of the cryopreservation of eggs, we analyse the relevant Acts, Bills, preparatory work, and readings in Parliament, along with the concurrent public and ethical debates that over time relaxed the legal limit for the cryopreservation of eggs to the current five years and today continue...... to ignite discussions on elective egg freezing. We rely on welfare-state perspectives to discuss why reproduction, in the Danish context, is seen as a legitimate and appropriate sphere to regulate, and we turn to feminist theorizing to discuss the gendered implications captured in the sociotechnical...

  16. The Nord interim store

    International Nuclear Information System (INIS)

    Leushacke, D.F.; Rittscher, D.

    1996-01-01

    In line with the decision taken in 1990 to shut down and decommission the Greifswald and Rheinsberg Nuclear Power Stations, the waste management concept of the Energiewerke Nord is based on direct and complete decommissioning of the six shut down reactor units within the next fifteen years. One key element of this concept is the construction and use of the Zwischenlager Nord (Nord Interim Store, ZLN) for holding the existing nuclear fuels and for interim and decay storage of the radioactive materials arising in decommissioning and demolition. The owner and operator of the store is Energiewerke Nord GmbH. The interim store has the functions of a processing and Energiewerke Nord GmbH. The interim store has the functions of a processing and treatment station and buffer store for the flows of residues arising. As a radioactive waste management station, it accommodates nuclear fuels, radioactive waste or residues which are not treated any further. It is used as a buffer store to allow the materials accumulating in disassembly to be stored temporarily before or after treatment in order to ensure continuous loading of the treatment plants. When operated as a processing station, the ZLN is able to handle nearly all types of radioactive waste and residues arising, except for nuclear fuels. These installations allow the treatment of radioactive residues to be separated from the demolition work both physically and in time. The possibilities of interium storage and buffer storage of untreated waste and waste packages make for high flexibility in logistics and waste management strategy. (orig.) [de

  17. Detection and survival of Campylobacter in chicken eggs.

    Science.gov (United States)

    Sahin, O; Kobalka, P; Zhang, Q

    2003-01-01

    Campylobacter jejuni, a food-borne human pathogen, is widespread in poultry; however, the sources of infection and modes of transmission of this organism on chicken farms are not well understood. The objective of this study was to determine if vertical transmission of C. jejuni occurs via eggs. Using a temperature differential method, it was shown that Campylobacter had limited ability to penetrate the eggshell. When C. jejuni was directly inoculated into the egg yolk and the eggs were stored at 18 degrees C, the organism was able to survive for up to 14 days. However, viability of C. jejuni was dramatically shortened when injected into the albumen or the air sac. When freshly laid eggs from Campylobacter-inoculated specific pathogen-free (SPF) layers were tested, C. jejuni-contamination was detected in three of 65 pooled whole eggs (5-10 eggs in each pool) via culture and PCR. However, the organism was not detected from any of the 800 eggs (80 pools), collected from the same SPF flock, but kept at 18 degrees C for 7 days before testing. Likewise, Campylobacter was not recovered from any of 500 fresh eggs obtained from commercial broiler-breeder flocks that were actively shedding Campylobacter in faeces. Also, none of the 1000 eggs from broiler breeders obtained from a commercial hatchery were positive for Campylobacter. These results suggest that vertical transmission of C. jejuni through the egg is probably a rare event and does not play a major role in the introduction of Campylobacter to chicken flocks. Control of Campylobacter transmission to chicken flocks should focus on sources of infection that are not related to eggs.

  18. [Preservation of live eggs of Schistosoma japonicum].

    Science.gov (United States)

    Lan, Wei-ming; Xie, Shu-ying; Wang, Qin; Jiang, Wei-sheng; Hu, Ren-mei; Ge, Jun; Zeng, Xiao-jun

    2015-10-01

    To observe the preservation time and activity of miracidium hatching from schistosome eggs preserved in different solutions, so as to obtain the optimal preservation conditions and then provide quality control products for field application. The rectum stool of rabbits infected with Schistosoma japonicum was collected and the coarse fecal residue was removed with a series of sample sieves of 80, 100, 160 and 200 meshes respectively, and then the schistosome eggs were concentrated with the sample sieve of 260 meshes. The concentrated eggs were preserved in 0.9% sodium chloride solution, 1.2% sodium chloride solution, phosphate buffered saline solution (PBS, PH 7.2), 1.0% sucrose solution, and Mili-Q water, respectively, and then were conserved in a 4 °C refrigerator and 15 °C constant temperature incubator, respectively. The preserved eggs were hatched in different time (7-day interval) , the vitality and quantity of the miracidia were observed, and the hatching rates were calculated. Under the condition of 4 °C, the hatching rates of eggs dropped to 0 in 1.0% sucrose solution and 1.2% sodium chloride solution at the 49th and 126th day, respectively, and the hatching rates of eggs in the 0.9% sodium chloride solution and PBS solution dropped to 10% at the 112th day, and the activity of miracidium was weakened since 140th. In the Mili-Q water, the hatching rate dropped less than 10% at the 196th day and the activity of miracidia was weakened since the 280th day. Under the condition of 15 °C, the hatching rate of eggs in different solutions gradually dropped to 0 from the 49th day to 105th day. The eggs preserved in Mili-Q water at the temperature of 4 °C can be used as the positive reference for hatching tests within 196 days.

  19. LCA of Egg Phospholipids

    OpenAIRE

    Berggren, Anders

    2013-01-01

    Egg phospholipids are a group of fats or lipids in the egg yolk, commonly used as emulsifiers in the chemical industry to facilitate the dissolving of substances. The pharmaceutical company Fresenius-Kabi manufactures this product and seeks a better understanding of the product’s major environmental impacts in order to comply with the ISO 14001 requirements, communicate its environmental performance and choose raw materials that result in lower environmental impacts. The aim of this study is ...

  20. Tips to Reduce Your Risk of Salmonella from Eggs

    Science.gov (United States)

    ... eggs. Eat or refrigerate eggs and foods containing eggs promptly after cooking. Do not keep eggs or foods made with ... water can pull bacteria into the egg. Refrigerate eggs after collection. Cook eggs thoroughly. Raw and undercooked eggs contain Salmonella ...

  1. Consumer Shell Egg Consumption and Handling Practices: Results from a National Survey.

    Science.gov (United States)

    Kosa, Katherine M; Cates, Sheryl C; Bradley, Samantha; Godwin, Sandria; Chambers, Delores

    2015-07-01

    Numerous cases and outbreaks of Salmonella infection are attributable to shell eggs each year in the United States. Safe handling and consumption of shell eggs at home can help reduce foodborne illness attributable to shell eggs. A nationally representative Web survey of 1,504 U.S. adult grocery shoppers was conducted to describe consumer handling practices and consumption of shell eggs at home. Based on self-reported survey data, most respondents purchase shell eggs from a grocery store (89.5%), and these eggs were kept refrigerated (not at room temperature; 98.5%). As recommended, most consumers stored shell eggs in the refrigerator (99%) for no more than 3 to 5 weeks (97.6%). After cracking eggs, 48.1% of respondents washed their hands with soap and water. More than half of respondents who fry and/or poach eggs cooked them so that the whites and/or the yolks were still soft or runny, a potentially unsafe practice. Among respondents who owned a food thermometer (62.0%), only 5.2% used it to check the doneness of baked egg dishes when they prepared such a dish. Consumers generally followed two of the four core "Safe Food Families" food safety messages ("separate" and "chill") when handling shell eggs at home. To prevent Salmonella infection associated with shell eggs, consumers should improve their practices related to the messages "clean" (i.e., wash hands after cracking eggs) and "cook" (i.e., cook until yolks and whites are firm and use a food thermometer to check doneness of baked egg dishes) when preparing shell eggs at home. These findings will be used to inform the development of science-based consumer education materials that can help reduce foodborne illness from Salmonella infection.

  2. Effects of breeder age and pre-incubation storage of eggs

    African Journals Online (AJOL)

    S..

    South African Journal of Animal Science 2005, 35 (2) ... weight, chick weight and percentage yolk weight were significantly higher in eggs ... interactions for water loss in chicks, early embryonic death, late embryonic ... in which hatching eggs are commonly stored for three to seven days prior .... The negative impacts were.

  3. Some chemical components of garden egg as affected by stage of ...

    African Journals Online (AJOL)

    Fresh fruits of garden egg were sorted into green, yellow bottom and yellow all over stages of fruit ripeness. Each set of fruits was stored at 40Cand 270C for up to 16 days, respectively. The effects of stage of fruit ripeness, storage temperature and duration of storage on some chemical components of garden egg were ...

  4. Proteomics analysis of egg white proteins from different egg varieties.

    Science.gov (United States)

    Wang, Jiapei; Liang, Yue; Omana, Dileep A; Kav, Nat N V; Wu, Jianping

    2012-01-11

    The market of specialty eggs, such as omega-3-enriched eggs, organic eggs, and free-range eggs, is continuously growing. The nutritional composition of egg yolk can be manipulated by feed diet; however, it is not known if there is any difference in the composition of egg white proteins among different egg varieties. The purpose of the study was to compare the egg white proteins among six different egg varieties using proteomics analysis. Egg white proteins were analyzed using two-dimensional gel electrophoresis (2-DE), and 89 protein spots were subjected to LC-MS/MS. A total of 23 proteins, belonging to Gallus gallus , were identified from 72 detected protein spots. A quiescence-specific protein precursor in egg white was identified for the first time in this study. Significant differences in the abundant levels of 19 proteins (from 65 protein spots) were observed among six egg varieties. Four proteins, ovalbumin-related protein Y, cystatin, avidin, and albumin precursor, were not different among these six egg varieties. These findings suggest that the abundance, but not the composition, of egg white proteins varied among the egg varieties.

  5. Food and beverage purchases in corner stores, gas-marts, pharmacies and dollar stores.

    Science.gov (United States)

    Caspi, Caitlin E; Lenk, Kathleen; Pelletier, Jennifer E; Barnes, Timothy L; Harnack, Lisa; Erickson, Darin J; Laska, Melissa N

    2017-10-01

    Little is known about customer purchases of foods and beverages from small and non-traditional food retailers (i.e. corner stores, gas-marts, dollar stores and pharmacies). The present study aimed to: (i) describe customer characteristics, shopping frequency and reasons for shopping at small and non-traditional food retailers; and (ii) describe food/beverage purchases and their nutritional quality, including differences across store type. Data were collected through customer intercept interviews. Nutritional quality of food/beverage purchases was analysed; a Healthy Eating Index-2010 (HEI-2010) score for purchases was created by aggregating participant purchases at each store. Small and non-traditional food stores that were not WIC-authorized in Minneapolis and St. Paul, MN, USA. Customers (n 661) from 105 food retailers. Among participants, 29 % shopped at the store at least once daily; an additional 44 % shopped there at least once weekly. Most participants (74 %) cited convenient location as the primary draw to the store. Customers purchased a median of 2262 kJ (540 kcal), which varied by store type (P=0·04). The amount of added sugar far surpassed national dietary recommendations. At dollar stores, participants purchased a median of 5302 kJ (1266 kcal) for a median value of $US 2·89. Sugar-sweetened beverages were the most common purchase. The mean HEI-2010 score across all stores was 36·4. Small and non-traditional food stores contribute to the urban food environment. Given the poor nutritional quality of purchases, findings support the need for interventions that address customer decision making in these stores.

  6. Assessing the quality of teleconsultations in a store-and-forward telemedicine network -- long-term monitoring taking into account differences between cases

    Directory of Open Access Journals (Sweden)

    Richard eWootton

    2014-10-01

    Full Text Available We have previously proposed a method for assessing the quality of individual teleconsultation cases; this paper proposes an additional step to allow the long-term monitoring of quality. The basic scenario is a teleconsultation system (aka an e-referral system or a tele-expertise system where the referrer posts a question about a clinical case, the question is relayed to an appropriate expert, and the chosen expert provides an answer.