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Artykuły w czasopismach na temat „Yolk”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 26 lipca 2025

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1

Salamon, Attila, and John P. Kent. "Yolk size and ovulation order determine fertility within double-yolked duck (Anas platyrhynchos domesticus) eggs." Reproduction, Fertility and Development 28, no. 4 (2016): 440. http://dx.doi.org/10.1071/rd14059.

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Herein we examined the effects of yolk size and ovulation order on the fertilisation of yolks within double-yolked (DY) duck eggs. Single-yolked (SY) duck eggs had high fertility (89.98%), whereas in DY duck eggs fertility was low (51.9% yolks). The yolks closer to the airspace (Yolk 1) in DY eggs had higher fertility (68.82% vs 34.98% for Yolk 2; P < 0.001). When only one of the two yolks was fertilised, Yolk 1 was fertilised in 99.12% of those eggs. Yolk 1 is presumed to be the first ovulated. The higher fertility of Yolk 1 is consistent with a primacy effect where the first ovulation has

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2

González Ariza, Antonio, Francisco Navas González, Ander Arando Arbulu, José León Jurado, Cecilio Barba Capote, and María Camacho Vallejo. "Non-Parametrical Canonical Analysis of Quality-Related Characteristics of Eggs of Different Varieties of Native Hens Compared to Laying Lineage." Animals 9, no. 4 (2019): 153. http://dx.doi.org/10.3390/ani9040153.

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The aim of the present study is to characterize the productive capability of Utrerana and to compare the relationships among parameters determining the internal and external quality of the egg, through canonical correlation analysis. A flock of 68 Utrerana hens and a control group of Leghorn hens (n = 17) were housed individually to allow individual identification of eggs and for the assessment of egg quality characteristics. Almost all variables showed differences when both breeds were compared, except for white height, yolk diameter, yolkL* and yolk pH (p > 0.05). Only minor diameter, whi

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3

Crossin, Glenn T., Maud Poisbleau, Laurent Demongin, et al. "Migratory constraints on yolk precursors limit yolk androgen deposition and underlie a brood reduction strategy in rockhopper penguins." Biology Letters 8, no. 6 (2012): 1055–58. http://dx.doi.org/10.1098/rsbl.2012.0476.

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Hormonally mediated maternal effects link maternal phenotype and environmental conditions to offspring phenotype. The production of lipid-rich maternal yolk precursors may provide a mechanism by which lipophilic steroid hormones can be transported to developing yolks, thus predicting a positive correlation between yolk precursors in mothers and androgen levels in eggs. Using rockhopper penguins ( Eudyptes chrysocome ), which produce a two-egg clutch characterized by extreme egg-size dimorphism, reversed hatching asynchrony and brood-reduction, we examined correlations between circulating conce

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4

Wang, Xin, and Qi Gen Tong. "Analysis Structure and Composition of Egg Yolk." Advanced Materials Research 997 (August 2014): 268–71. http://dx.doi.org/10.4028/www.scientific.net/amr.997.268.

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In this paper, the structure and composition of the egg yolk has guiding effect to the quality problem of the egg yolk, processed foods. Yolks studies three levels, namely, the middle elastic layer, sand viscous layer, the outer layer. An analysis of the composition of the three levels as A result, in addition to vitamin A, egg yolk center among all kinds of trace elements content in the adhesive layer is egg yolk elastic layer and the external sand layer; At the same time, the egg yolk of external sandy layer in magnesium, iron, zinc and calcium content in the middle elastic layer; And consta

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5

GAST, RICHARD K., RUPA GURAYA, JEAN GUARD-BOULDIN, and PETER S. HOLT. "Multiplication of Salmonella Enteritidis on the Yolk Membrane and Penetration to the Yolk Contents at 30°C in an In Vitro Egg Contamination Model." Journal of Food Protection 71, no. 9 (2008): 1905–9. http://dx.doi.org/10.4315/0362-028x-71.9.1905.

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Refrigeration to limit bacterial multiplication is a critical aspect of efforts to control the transmission of Salmonella enterica serovar Enteritidis (SE) to consumers of contaminated eggs. Although the nutrient-rich yolk interior is an uncommon location for SE contamination in freshly laid, naturally contaminated eggs, migration across the vitelline membrane could lead to rapid bacterial multiplication even when the initial site of deposition is outside the yolk. Multiplication on the yolk membrane (before, or in addition to, multiplication within the yolk contents) could be another source o

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6

Luo, Wei, Jinghui Wang, Yan Chen, Qionglian Zhang, Jinqiu Wang, and Fang Geng. "Quantitative Lipidome Analysis of Boiled Chicken Egg Yolk under Different Heating Intensities." Molecules 28, no. 12 (2023): 4601. http://dx.doi.org/10.3390/molecules28124601.

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The effects of the four heating intensities (hot-spring egg yolk, HEY; soft-boiled egg yolk, SEY; normal-boiled egg yolk, NEY; and over-boiled egg yolk, OEY) on lipidomes of boiled egg yolks were investigated. The results indicated that four heating intensities had no significant effect on the total abundance of lipids and lipid categories except for bile acids, lysophosphatidylinositol, and lysophosphatidylcholine. However, of all the 767 lipids quantified, the differential abundance of 190 lipids was screened among the egg yolk samples at four heating intensities. Soft-boiling and over-boili

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7

Song, Yiping, Sumeng Yu, Xiaofeng Zhang, et al. "Effect of Canthaxanthin on Egg Yolk Quality of Huaixiang Laying Hens at Normal and High Temperature." Foods 14, no. 6 (2025): 950. https://doi.org/10.3390/foods14060950.

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(1) Background: Thermal stress in Guangdong’s tropical/subtropical regions significantly compromises yolk quality in Huaixiang chickens. Canthaxanthin (CX), an effective feed additive, has been demonstrated to not only enhance the nutritional composition of egg yolks but also mitigate heat stress. This study systematically evaluates the effects of dietary CX supplementation on egg production rate and yolk nutritional components (e.g., amino acids, lipids, vitamin B2) in Huaixiang hens under both normal and high-temperature environments. (2) Methods: A factorial design was implemented, exposing

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8

Djokić, Nemanja, Nikola Čobanović, Nedjeljko Karabasil, Nevena Grković, Ivan Vićić, and Branko Suvajdžić. "Quality of table eggs in relation to shell colour." Veterinarska stanica 54, no. 2 (2022): 171–84. http://dx.doi.org/10.46419/vs.54.2.5.

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The present study evaluated the quality of table eggs in relation to shell colour. The study was conducted on 60 table eggs with shells coloured white, green, blue and brown (15 eggs per colour) obtained from laying hens from the same backyard farm. The following external quality traits of table eggs were measured: egg weight, percentage of dirty and cracked eggs, egg width and length, egg shape index, eggshell colour, eggshell weight and percentage, and eggshell thickness. The following internal quality indicators of table eggs were determined: albumen weight and percentage, albumen pH value,

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9

GAST, RICHARD K., RUPA GURAYA, JEAN GUARD, and PETER S. HOLT. "Multiplication of Salmonella Enteritidis in Egg Yolks after Inoculation outside, on, and inside Vitelline Membranes and Storage at Different Temperatures." Journal of Food Protection 73, no. 10 (2010): 1902–6. http://dx.doi.org/10.4315/0362-028x-73.10.1902.

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Prompt refrigeration to restrict bacterial growth is important for reducing eggborne transmission of Salmonella enterica serovar Enteritidis (SE). The nutrient-rich yolk interior is a relatively infrequent location for initial SE deposition in eggs, but migration across the vitelline membrane can result in rapid bacterial multiplication during storage at warm temperatures. The objective of the present study was to measure the multiplication of SE in yolks after introduction at three different locations and subsequent storage at a range of temperatures. Using an in vitro egg contamination model

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10

HARSA, DZAKY FATIH. "THE EFFECT OF EGG YOLK LEVELS IN TRIS DILUENTS ON ABNORMALITY AND PLASMA MEMBRAN INTERGRITY OF SEMEN MUSCOVY DUCK (Cairina moschata)." Jurnal Produksi Ternak Terapan (JPTT) 4, no. 1 (2023): 01. http://dx.doi.org/10.24198/jptt.v4i1.40972.

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Entog (Cairina moschata) is a very potential waterfowl. Attempts to increase the population by diluting semen with Tris diluent. The addition of egg yolks is necessary to avoid cold shock. The purpose of this study was to determine the effect of egg yolk in Tris diluent on abnormalities and integrity of the plasma membrane of sperm. This research was conducted in January – February 2022 at the Faculty of Animal Husbandry, Padjadjaran University. This study used a completely randomized design (CRD) method with 4 treatments and 5 replications. The treatments used were egg yolk level 5% (T1), egg

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11

Chen, Bao, Yi Sun, Haobo Jin, et al. "An Efficient Processing Strategy to Improve the Flavor Profile of Egg Yolk: Ozone-Mediated Oxidation." Molecules 28, no. 1 (2022): 124. http://dx.doi.org/10.3390/molecules28010124.

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This study investigated the effect of ozone treatment on egg yolk volatiles and fatty acids. The composition and content of volatile substances and the fatty acid content of the egg yolk were changed significantly after ozonation. With proper ozone treatment (30 min), the aldehyde content in the egg yolk increased from 78.08% to 94.63%, and the relative content of dibutyl amine decreased from 1.50% to 0.00%. There were no significant differences among the types of fatty acids in the egg yolks after being treated with ozone, but there were differences in their relative contents. The results of

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12

Lalombo, Yulia Indah Sari, Khusnul Yaqin, and Sharifuddin Bin Andy Omar. "Nutrient Absorption Rate of Oryzias celebensis Embryo." Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil 5, no. 2 (2021): 67–71. http://dx.doi.org/10.29239/j.akuatikisle.5.2.67-71.

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Oryzias celebensis is a species of medaka fish in South Sulawesi. During incubation, the growth and development of these fish embryos depend on the nutrients stored in the eggs. Therefore, this study aimed to determine the volume size of egg yolks and oil droplets and the absorption rate of egg yolks of O. celebensis embryos that reared in different incubation media. The study was conducted using a completely randomized design (CRD) with four rearing media treatments, namely A (Early Rearing Media), B (bottled water), C (Pattunuang river water) and D (well water) with five replications . The r

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13

Maha A. Al - Abayaji. "Extraction and determination of Iraqi boiled Egg Yolk constituents, and characterization of Lecithin." journal of the college of basic education 21, no. 87 (2022): 49–57. http://dx.doi.org/10.35950/cbej.v21i87.8851.

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This study aimed to extract, determine the Iraqi boiled Egg Yolk constituents and characterize the lecithin. The moisture content of the heated egg yolks was (54%). Egg Yolk protein was extracted using absolute ethanol and the calculated protein percent was (31.31%). The remaining egg yolk was deoiled with acetone using AOCS Official Method Ja 4-46 [13], and the calculated oil percent was (6.72 %). Egg Yolk remaining protein was extracted using chloroform / methanol mixture and the calculated remaining protein percent was (5.7%). Finally Lecithin content was (10.29%). Pure Lecithin was charact

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14

Wang, Xin, and Qi Gen Tong. "Structure and Composition Analysis of Egg Yolk." Advanced Materials Research 997 (August 2014): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amr.997.112.

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In this paper, the structure and composition of the egg yolk to solve the quality problem of the salted egg, preserved egg, and other products have a guiding role. Refrigeration, heating, formaldehyde solidification method is adopted to study the macroscopic and microscopic structure of egg yolks, results show that three levels yolks, respectively is the middle elastic layer, sand viscous layer, the outer layer, egg yolk, the three layers of macroscopic and microscopic structure exists a big difference.

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15

Treswari, Galuh Ayu, Bambang Soeprijanto, Indrastuti Normahayu, and Lenny Violetta. "YOLK SAC TUMOR OVARIUM." Jurnal Radiologi Indonesia 4, no. 1 (2020): 43–51. http://dx.doi.org/10.33748/jradidn.v4i1.88.

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Yolk sac tumor called endodermal sinus tumor, is a rare and very malignant germ cell tumor. The second largest ovarian germ cell tumor after dysgerminoma, with an incidence of 1% of ovarian malignancies. Tumors usually appear as fast-growing masses in young women. The radiological imaging of this tumor is seen as a large dense cystic mass with heterogeneous enhancement, a component of dilated intratumoralblood vessels accompanied by an intralesional hemorrhagic focus. The best radiological modality is CT scan or MRI. CT imaging useful for distinguishing yolk sac tumors from other ovarian tumor

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16

GAST, RICHARD K., PETER S. HOLT, and RUPA GURAYA. "Effect of Refrigeration on In Vitro Penetration of Salmonella Enteritidis through the Egg Yolk Membrane." Journal of Food Protection 69, no. 6 (2006): 1426–29. http://dx.doi.org/10.4315/0362-028x-69.6.1426.

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Internally contaminated eggs have been implicated as leading sources of transmission of Salmonella Enteritidis (SE) to humans. Although SE is not often deposited inside the nutrient-rich yolks of naturally contaminated eggs, penetration through the vitelline membrane to reach the yolk contents could result in rapid bacterial multiplication. In previous studies, such penetration has been observed occasionally at warm temperatures during experiments with in vitro egg contamination models. The present study was conducted to determine whether refrigeration affects the frequency of in vitro SE pene

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17

FITZSIMMONS, R. C., MARK NEWCOMBE, and I. E. MOUL. "THE LONG-TERM EFFECTS OF FEEDING GROUND AND WHOLE COTTONSEED TO LAYING HENS." Canadian Journal of Animal Science 69, no. 2 (1989): 425–31. http://dx.doi.org/10.4141/cjas89-047.

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Laying hens were fed diets containing 0, 2.5, 5, 10, 15 and 20% whole or ground cottonseed. Birds fed the 15 and 20% ground cottonseed diets rapidly reduced voluntary feed intake and, as a result, suffered a loss in both body weight and egg production. The severity of the dietary effects of cottonseed on productivity and mottled yolks was positively correlated with the level of cottonseed and gossypol in the diet. Egg yolk discoloration was assessed both visually on fresh yolks and using a time exposure to ammonia fumes. Discoloration was easier to detect using the ammonia test. In all cases,

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18

Et.al, Juli Yanto. "Development of Chicken Nutritional Quality Classification Methods and Algorithms Eggs Based on Characteristics of Yellow Eggs." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (2021): 1453–61. http://dx.doi.org/10.17762/turcomat.v12i3.943.

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In order to sustain human life, food is a very necessary material, since the human body requires nutrition to be used in everyday activities. In this case, eggs are among the nutritional intake, a protein that is commonly consumed by the community, particularly native chicken eggs that are available quite a lot. The nutritional quality does have beneficial advantages for the human body in all areas of the egg. In eggs, 10.8 percent of the protein content the body requires is in egg whites and 16.3 percent in egg yolks. The consistency of the egg is defined by the yolk color strength. The princ

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Besharati, Maghsoud, Leila Fathi, Saeid Amirdahri, et al. "Reserves of Calcium, Copper, Iron, Potassium, Magnesium, Manganese, Sodium, Phosphorus, Strontium and Zinc in Goose Egg Yolk during Embryo Development." Animals 13, no. 12 (2023): 1925. http://dx.doi.org/10.3390/ani13121925.

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This study evaluated the changes in calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), phosphorus (P), strontium (Sr) and zinc (Zn) values in goose egg yolk during the incubation period. This study was conducted on a completely random selection using 200 fertile eggs from a local flock of geese. A selection of 30 fertile eggs were randomly sampled on days 0, 9.5, 19.5, 25 and 30 of incubation (total: 150 eggs), and the yolks of 5 eggs in each replicate were mixed together and considered as one replicate (six replicates in each incubation period).

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Wiebe, Karen L. "Egg Composition in Northern Flickers." Condor 108, no. 4 (2006): 977–80. http://dx.doi.org/10.1093/condor/108.4.977.

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Abstract Abstract There have been several studies on egg compositionin birds, but none on woodpeckers. Woodpeckers(Picidae) have among the smallest eggsrelative to their body size of any bird. Idissected Northern Flicker (Colaptesauratus) eggs into shell,yolk, and albumen components, and determined thelipid content of the yolk. The proportional size ofthe yolk in flicker eggs (16%) wasamong the smallest described for any bird. However,the yolk contained a similar amount of lipid(58%) as the yolks of otheraltricial species. The overall energy density inflicker eggs, 3.8 kJ g−1,was also among th

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Bovšková, H., K. Míková, and Z. Panovská. "Evaluation of egg yolk colour ." Czech Journal of Food Sciences 32, No. 3 (2014): 213–17. http://dx.doi.org/10.17221/47/2013-cjfs.

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We compare visual evaluation of yolk colour estimated by the usual method applying La Roche scale with spectrophotometric determination of &beta;-carotene by AOAC method, and by new rapid analyser iCheck<sup>TM</sup> Egg photometer (BioAnalyt). The eggs under consideration were purchased on a current Czech market. The eggs originated from various countries and various types of breeding including some specialities. The yolk colour varied between the values of 4&ndash;13 of La Roche scale. The carotenoid content expressed as &beta;-carotene measured by AOAC method varied

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Straková, E., F. Vitula, P. Suchý, V. Vecerek, and J. Skaloud. "Cholesteringehalt in Eiern und Blut von Federwild (Kurzmitteilung)." Archives Animal Breeding 44, no. 3 (2001): 339–44. http://dx.doi.org/10.5194/aab-44-339-2001.

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Abstract. Title of the paper: Cholesterol concentration in yolks and blood plasma in five species of game birds (short communication) Cholesterol concentrations were determined in yolks and blood plasma of five significant species of game birds (common partridge, wild turkey, common pheasant, guinea fowl, and chukar partridge). Two yolk samples and one blood plasma sample were collected from 15 female birds of each species. Dimensions, whole egg weight and weights of sheli, yolk, and white were recorded for each egg. Mean blood plasma concentrations were significantly higher (P < 0.01) in t

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Rizky, Dinda Khalifa, Muhammad Rosyid Ridlo, Anisatun Khusnul Khotimah, and Arsy Bidaraswati. "Review Jurnal: Efektivitas Penggunaan Kuning Telur Berbagai Jenis Unggas Sebagai Pengencer Semen pada Ternak." Jurnal Ilmiah Ilmu-Ilmu Peternakan 26, no. 2 (2023): 150–62. http://dx.doi.org/10.22437/jiiip.v26i2.29318.

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A method is needed that can be used to maintain sperm quality in order to produce superior seeds. The use of poultry egg yolk as a diluent is of course widely used because poultry eggs can maintain the good quality of cattle sperm. This research aims to determine the level of effectiveness of egg yolks of various types of poultry as a sperm diluent on the motility and viability of cattle sperm. The method used in this research is the literature review method and the descriptive method. The results showed that the use of free-range chicken egg yolk and quail egg yolk as sperm diluent showed the

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Kljak, Kristina, Marija Duvnjak, Dalibor Bedeković, Goran Kiš, Zlatko Janječić, and Darko Grbeša. "Commercial Corn Hybrids as a Single Source of Dietary Carotenoids: Effect on Egg Yolk Carotenoid Profile and Pigmentation." Sustainability 13, no. 21 (2021): 12287. http://dx.doi.org/10.3390/su132112287.

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Commercial high-yielding corn hybrids have not been evaluated for their ability to pigment egg yolk. Therefore, the objective of this research was to investigate the effects of commercial hybrids with different carotenoid profiles as the only source of pigments in the diets of hens on yolk color and carotenoid content, as well as the carotenoid deposition efficiency into the yolk. Treatment diets, differing only in one of five corn hybrids, were offered in a completely randomized design in six cages per treatment, each with three hens. Treatment diets and yolks differed in carotenoid profile (

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Dubrof, Stephanie, Jillien Zukaitis, Ishfaque Ahmed, et al. "Perinatal Supplementation of Egg Yolk Enhances Cognition and Alters Brain Network Function in Offspring." Current Developments in Nutrition 6, Supplement_1 (2022): 278. http://dx.doi.org/10.1093/cdn/nzac053.019.

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Abstract Objectives Egg yolks are a nutrient dense food often recommended to pregnant women, as they contain bioactive compounds that enhance brain development in offspring. We examined the effects of perinatal intake of egg yolks on cognition and brain functional network activity in offspring using a translational sow/piglet dyad model. Methods Sows were fed a control diet (n = 6) or a diet containing egg yolks (n = 5,350 mg egg yolk powder/kg BW/day, equivalent to ∼3 eggs/day for humans) from late gestation throughout lactation. At weaning, piglet offspring (n = 4/sow, total n = 44) performe

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Stephenson, Patricia, Felicia B. Satchell, Geraldine Allen, and Wallace H. Andrews. "Recovery of Salmonella from Shell Eggs." Journal of AOAC INTERNATIONAL 74, no. 5 (1991): 821–26. http://dx.doi.org/10.1093/jaoac/74.5.821.

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Abstract A preenrlchment procedure and a direct selective enrichment procedure were compared for recovery of Salmonella artificially inoculated into liquid whole egg, egg yolk, and egg albumen. For liquid whole egg and egg yolk, the 2 procedures were comparable. With egg albumen, however, preenrlchment In lactose broth gave significantly higher recoveries than did direct selective enrichment in either selenite cystine or tetrathionate broths. The lactose preenrlchment procedure was used to determine the survival of S. enterltldla in egg yolk and egg albumen over a period of 7 days. As shown by

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Imawan, Salsabila Ma’shum, Zakiah Wulandari, Wulandari Wulandari, and Cece Sumantri. "Quality of IPB-D1 Chicken Egg Yolk Powder Using Various Drying Methods." Jurnal Ilmu dan Teknologi Hasil Ternak 18, no. 3 (2023): 169–78. http://dx.doi.org/10.21776/ub.jitek.2023.018.03.2.

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IPB D-1 chickens had good egg productivity. Chicken eggs are often used as functional ingredients in the form of powder because they have many advantages for the food industry. This research aims to produce egg yolk powder with good physicochemical, microbiological, and fatty acid qualities derived from IPB-D1 chicken eggs using various drying methods namely spray drying, oven drying, and vacuum drying. This study also aims to examine the functional properties of IPB-D1 chicken egg yolk powder by application to mayonnaise. It is compared with mayonnaise made from fresh egg yolks and commercial

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Suhermiyati, Sri. "Kolesterol dan Omega 9 Kuning Telur Ayam Petelur yang Mendapat Udang Mantis (Squilla empusa) Fermentasi dalam Pakan." Jurnal Agripet 11, no. 2 (2011): 41–44. http://dx.doi.org/10.17969/agripet.v11i2.373.

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Cholesterol and omega-9 fatty acid eggs yolks affected by mantis crustacean (squilla empusa) fermentation as a fish meal substitution in the diet of layer.ABSTRACT. The experiment was conducted to determine the effect of Squilla empusa fermentation as fish meal substitute in diet layer on cholesterol and omega-9 fatty acid yolk eggs. This research was conducted by completely randomized design (CRD) with 4 treatment and 5 replications. The treatments are P0 = 0% fermented Squilla empusa + 15% fish meal; P1 = 5% fermented Squilla empusa + 10% fish meal; P2 = 10% fermented Squilla empusa + 15% fi

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Saleh, Ahmed A., Esraa Gawish, Samy F. Mahmoud, et al. "Effect of Natural and Chemical Colorant Supplementation on Performance, Egg-Quality Characteristics, Yolk Fatty-Acid Profile, and Blood Constituents in Laying Hens." Sustainability 13, no. 8 (2021): 4503. http://dx.doi.org/10.3390/su13084503.

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Natural and chemical colorants are attracting a lot of attention as sustainable feed additives due to their effect on food color and because presentation matters to consumers. Color also is a major sensory factor that helps consumers determine food quality and its possible health benefits. For example, highly colored egg yolks can only come from healthy laying hens fed a well-balanced, nutrient-rich diet. Consumers associate an intense yolk color with healthy, nutrient-rich food. There is a growing market request for eggs with rich yolk coloring. The purpose of the current study was to evaluat

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Gao, Li-Bing, Uchechukwu Edna Obianwuna, Hai-Jun Zhang, et al. "A Comparison between the Egg Yolk Flavor of Indigenous 2 Breeds and Commercial Laying Hens Based on Sensory Evaluation, Artificial Sensors, and GC-MS." Foods 11, no. 24 (2022): 4027. http://dx.doi.org/10.3390/foods11244027.

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The focus of this study was to compare the yolk flavor of eggs from laying hens of Chinese indigenous and commercial, based on detection of volatile compounds, fatty acids, and texture characteristics determination, using sensory evaluation, artificial sensors (electronic nose (E-nose), electronic tongue (E-tongue)), and gas chromatography-mass spectrometry (GC-MS). A total of 405 laying hens (Hy-Line Brown (n = 135), Xueyu White (n = 135), and Xinyang Blue (n = 135)) were used for the study, and 540 eggs (180 per breed) were collected within 48 h of being laid and used for sensory evaluation

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Honda, Masaki, Yuki Kawashima, Kazuaki Hirasawa, Takeshi Uemura, Sun Jinkun, and Yoshiaki Hayashi. "Possibility of Using Astaxanthin-Rich Dried Cell Powder from Paracoccus carotinifaciens to Improve Egg Yolk Pigmentation of Laying Hens." Symmetry 12, no. 6 (2020): 923. http://dx.doi.org/10.3390/sym12060923.

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The study investigated egg quality aspects such as astaxanthin concentration, E/Z-isomer ratio, and yolk color in laying hens fed with astaxanthin-containing diets. Dried Paracoccus carotinifaciens cell powder (Panaferd-AX) and fine cell powder (Panaferd-P) were used as sources of astaxanthin, with average particle diameters of approximately 100 μm and 10 μm, respectively. Paracoccus carotinifaciens contains valuable rare carotenoids such as adonirubin and adonixanthin, and thus the concentrations of these carotenoids in egg yolk were also evaluated. The E/Z-isomer ratios of the egg yolk carot

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Kotrbáček, V., M. Skřivan, J. Kopecký, et al. "Retention of carotenoids in egg yolks of laying hens supplemented with heterotrophic Chlorella." Czech Journal of Animal Science 58, No. 5 (2013): 193–200. http://dx.doi.org/10.17221/6747-cjas.

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The present study investigated the effect of 1 and 2% feed supplementation with biomass of Chlorella grown through heterotrophic fermentation on the concentration of total and individual carotenoids in egg yolks. A total of twenty-four Hisex Brown laying hens aged 56 weeks were included in the experiment. The layers were kept individually in cages. They were divided into three groups of eight birds and fed a diet typical for laying hens. Control birds (C) received only a basal diet, while experimental diets (P1 and P2) were supplemented with 1 and 2% (i.e. 10 and 20 g/kg) dry disintegrated Chl

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Dušová, Hana, Jan Trávníček, Zdeněk Peksa, Daniel Falta, and Václav Pálka. "Trace element content in market eggs in Bohemia." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 60, no. 6 (2012): 75–80. http://dx.doi.org/10.11118/actaun201260060075.

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The aim of this study was to analytically determine the content of iodine, copper, zinc and manganese in the yolk of consumer eggs in Bohemia in 2007 and 2008. Investigated eggs originated from six so called intensive farms with large flocks (118 eggs) and twelve backyard farms or small-flock establishments (136 eggs) from three administrative regions in Czech Republic. Eggs from intensive farms were obtained directly from the establishments, while eggs from backyard farms were purchased from private farmers. Spectrophotometric Sandell-Kolthoff method was used for determination of iodine conte

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Lioliopoulou, Styliani, Georgios A. Papadopoulos, Ilias Giannenas, et al. "Effects of Dietary Supplementation of Pomegranate Peel with Xylanase on Egg Quality and Antioxidant Parameters in Laying Hens." Antioxidants 12, no. 1 (2023): 208. http://dx.doi.org/10.3390/antiox12010208.

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Pomegranate contains bioactive compounds in all its parts. In this study, two levels of pomegranate peel byproduct (PPB) with or without the inclusion of xylanase enzyme were used to supplement laying hens’ diet, in a 2 × 2 full factorial design. A total of 48 Isa brown laying hens were fed the following experimental diets for 8 weeks: T1 (2.5% PPB); T2 (2.5% PPB and xylanase); T3 (5% PPB); T4 (5% PPB and xylanase). Eggs collected were analyzed for egg quality parameters. Moreover, egg yolks were analyzed for Malondialdehyde content (MDA), fatty acid profile and total phenolic content. The T2

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Diba, Lucky, Suzanita Utama, Tjuk Imam Restiadi, Suherni Susilowati, Nusdianto Triakoso, and Dwi Wijayanti. "The addition of egg yolk to the physiological saline extender improved the motility and viability of kampung rooster spermatozoa at cool temperatures." Ovozoa: Journal of Animal Reproduction 12, no. 2 (2023): 77–84. http://dx.doi.org/10.20473/ovz.v12i2.2023.77-84.

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The purpose of this study was to determine the motility and viability of kampung rooster (Gallus gallus domesticus) spermatozoa in 0.9% Sodium chloride (NaCl) solution as an extender with the addition of egg yolk at different concentrations at cool temperature (5°C). This study was performed using two 1.5 years old healthy local roosters. Semen was collected through massage in the morning. The pooled semen sample was divided into four treatment groups. In the T0 group the semen was diluted in 0.9% NaCl, while in the T1, T2 and T3 groups the semen was diluted in 0.9% NaCl added with 5, 10 and 1

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Aguilar, José Manuel, Manuel Felix, Yolanda López-González, Felipe Cordobés, and Antonio Guerrero. "Acidic and Heat Processing of Egg Yolk Dispersions." Processes 9, no. 10 (2021): 1842. http://dx.doi.org/10.3390/pr9101842.

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Egg yolk is a multifunctional ingredient widely used in many food products, wherein proteins are the dominant component contributing to this functionality. However, the potential risk of foodborne illness associated with egg use forces us to ensure that foodstuffs based on egg yolk are managed in a safe and sanitary manner. Lowering the pH under a certain value by adding acids could serve this purpose, but it can also greatly modify the rheological and functional properties of egg yolk. This research aims to assess the influence of citric acid on the rheological properties and microstructure o

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Polonio, Lorrayne Bernegossi, Elisa Helena Giglio Ponsano, Marcos Franke Pinto, and Manoel Garcia-Neto. "Utilisation of bacterial (Rubrivivax gelatinosus) biomass for egg yolk pigmentation." Animal Production Science 50, no. 1 (2010): 1. http://dx.doi.org/10.1071/an09065.

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The effects of Rubrivivax gelatinosus biomass inclusion in diets of Dekalb White laying hens were assessed. The traits studied were yolk colour, consumer preference and hepatic and renal function. Broken-line regression was used to assess the biomass requirements for yolk colour attributes. Hens were fed one of six experimental diets formulated with the bacterial biomass at 0 (control), 1.5, 3.0, 4.5, 6.0 and 7.5 g/kg into a corn–soybean meal basal feed for 30 days. All tested concentrations of the biomass caused darkening and increased redness of yolks but did not affect yellowness. The yolk

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Omri, Amraoui, Tarek, et al. "Arthrospira Platensis (Spirulina) Supplementation on Laying Hens’ Performance: Eggs Physical, Chemical, and Sensorial Qualities." Foods 8, no. 9 (2019): 386. http://dx.doi.org/10.3390/foods8090386.

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The present study evaluated the effects of dietary supplementation of spirulina on laying hens’ performances: Eggs’ physical, chemical, and sensorial qualities. A total of 45 Lohman White hens, 44 weeks of age, were randomized into 3 groups of 15 birds. Hens were given 120 g/d of a basal diet containing 0% (control), 1.5%, and 2.5% of spirulina for 6 weeks. Albumen height and consequently Haugh unit were significantly affected by dietary supplementation of spirulina (p < 0.05) and by weeks on diet (p < 0.05). This supplement did not affect (p > 0.05) egg yolk weight or height. However

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Asare, Bernard Kwame, Matthew Atongbiik Achaglinkame, Faisal Eudes Sam, Richard Atinpoore Atuna, and Francis Kweku Amagloh. "Yellowness of egg yolks influences consumer preference for eggs in Ghana." International Food Research Journal 31, no. 2 (2024): 486–95. http://dx.doi.org/10.47836/ifrj.31.2.19.

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The present work evaluated β-carotene content, colour (L*, a*, b*), and consumer preference for egg yolks from chicken, guinea fowl, and quail, sampled from intensive or semi-intensive rearing systems in Ghana. The β-carotene content of guinea fowl yolk was almost seven times greater (p < 0.001) than that of chicken and quail yolks. The yellowness of guinea fowl yolk (82.18; p < 0.01) was approximately 1.5 and 1.3 times greater than that of chicken and quail yolks, respectively. A consumer preference test showed a significantly greater score (5; p < 0.001) for guinea fowl than for the

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David Spence, J. "Dietary cholesterol and egg yolk should be avoided by patients at risk of vascular disease." Journal of Translational Internal Medicine 4, no. 1 (2016): 20–24. http://dx.doi.org/10.1515/jtim-2016-0005.

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Abstract Recent recommendations that limits to dietary cholesterol be dropped were probably heavily influenced by propaganda from the egg industry. After conviction for false advertising, the industry has spent hundreds of millions of dollars to convince the public, physicians, and policy makers that dietary cholesterol and egg yolk are harmless. However, there are good reasons for longstanding recommendations that dietary cholesterol be limited to <200 mg/ day in persons at risk of vascular disease. It is seldom understood that this essentially means all people in developed countries who e

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Cahyani, W. U., A. Darmawan, and Dwi margi Suci. "Suplementasi Ekstrak Asam Kandis (Garcinia xanthochymus) dalam Air Minum terhadap Kadar Malondialdehid Kuning Telur dan Komposisi Kimia Daging dan Telur Puyuh." Jurnal Ilmu Nutrisi dan Teknologi Pakan 19, no. 1 (2021): 24–29. http://dx.doi.org/10.29244/jintp.19.1.24-29.

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The purpose of this study was to evaluate the effect of supplementation of Garcinia xanthochymus extract in drinking water on the quail meat and eggs quality (fat content, protein content) and malondialdehyde (MDA) on egg yolk. This study used female quails (132 tails) aged 42 days, which were kept for 6 weeks, and then divided into four groups treatments of drinking water, and 3 replications each treatment. The method used was a Completely Randomized Design (RAL) with P0 (control), P1 (pH 4), P2 (pH 3), P3 (pH 2). The variables observed were moisture content, crude fat content and crude prote

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Sipan, Muhammad, and Rony Kartika Pramuyanti. "Deteksi Kualitas Kuning Telur Ayam Kampung Menggunakan Ekstraksi Ciri Secara Statistika Orde Satu Berbasis Logika Fuzzy." Elektrika 12, no. 2 (2020): 73. http://dx.doi.org/10.26623/elektrika.v12i2.2783.

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<p><em>Chicken eggs have become a basic necessity for Indonesians, both for personal consumption and for business purposes. Eggs that are good or quality can be seen based on the yolk. Both those who are only a day old a week or more than two weeks or those that are not suitable for consumption.</em></p><p><em>Quality egg yolks appear brighter in yellow and there are no stripes or other colors and markings in the yolk. Eggs. From this, the author tries to do research on the detection of quality detection of native chicken egg yolk using Order One Statistical

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Humphrey, T. J., M. Greenwood, R. J. Gilbert, B. Rowe, and P. A. Chapman. "The survival of salmonellas in shell eggs cooked under simulated domestic conditions." Epidemiology and Infection 103, no. 1 (1989): 35–45. http://dx.doi.org/10.1017/s0950268800030338.

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SUMMARYStrains ofSalmonella enteritidis, S. typhimurium and S. senftenberg inoculated into the yolks of shell eggs were found to survive forms of cooking where some of the yolk remained liquid. Survival was largely independent of the size of the initial inoculum. The organisms also grew rapidly in eggs stored at room temperature and after 2 days the number of cells per gram of yolk exceeded log 8·0. With this level of contamination viable cells could be recovered from eggs cooked in any manner.

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Siti, N. W., та I. G. N. G. Bidura. "Effects of carrot leaves on digestibility of feed, and cholesterol and β-carotene content of egg yolks". South African Journal of Animal Science 51, № 6 (2022): 786–92. http://dx.doi.org/10.4314/sajas.v51i6.11.

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The purpose of this study was to evaluate the effects of carrot leaf supplementation on feed digestibility and the cholesterol and β-carotene contents of the yolks of eggs produced by Lohmann Brown laying hens. A feeding trial was conducted using 240 healthy 30-week-old laying hens kept in colony cages to evaluate the effect of dietary supplementation with carrot leaves. Carrot leaf extract (CLE) was prepared by macerating carrot leaves in distilled water (1:1, w/w). The hens were fed diets i) without carrot leaves (C0), ii) supplemented with 2% carrot leaf flour (CLF)(C1); iii) supplemented w

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Durant, Joël M., Sylvie Massemin, and Yves Handrich. "More Eggs the Better: Egg Formation in Captive Barn Owls (Tyto Alba)." Auk 121, no. 1 (2004): 103–9. http://dx.doi.org/10.1093/auk/121.1.103.

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Abstract We studied rapid yolk deposition (RYD) in Barn Owls (Tyto alba) on the basis of the analysis of 26 eggs laid by “dye-dosed” captive female Barn Owls in five different broods. Pictures of yolks were examined to assess daily rates of yolk deposition. We used those data in combination with data from the dissection of ovaries of another five breeding females. We found that the total duration between initiation of RYD and laying of the corresponding egg was only 13.6 days, with an interval between yolk completion and oviposition of 2.4 days. The total number of follicles that may have give

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Yang, Jun, Xuemei Ding, Shiping Bai, et al. "The Effects of Broiler Breeder Dietary Vitamin E and Egg Storage Time on the Quality of Eggs and Newly Hatched Chicks." Animals 10, no. 8 (2020): 1409. http://dx.doi.org/10.3390/ani10081409.

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This study was conducted to investigate the effects of broiler breeder dietary vitamin E and egg storage time on the egg characteristics, hatchability, and antioxidant status of the egg yolks and newly hatched chicks. A total of 512 71-week-old Ross 308 breeder hens were fed the same basic diets containing 6 or 100 mg/kg vitamin E for 12 weeks. During this time, a total of 1532, 1464, and 1316 eggs were independently collected at weeks 8, 10, and 12, respectively, and subsequently stored for 0 or 14 d before hatching. The outcomes from three trials showed that prolonged egg storage time (14 vs

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Rey, Ana I., Almudena de-Cara, Almudena Rebolé, and Ignacio Arija. "Short-Term Spirulina (Spirulina platensis) Supplementation and Laying Hen Strain Effects on Eggs’ Lipid Profile and Stability." Animals 11, no. 7 (2021): 1944. http://dx.doi.org/10.3390/ani11071944.

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The aim of the study was to investigate the effect of short-term dietary spirulina supplementation (1% and 3%) and the strain of laying hens (White Leghorn: WL and Rhode Island Red: RIR) on color, nutritional value, and stability of yolk. Egg weight was not affected by any of the studied effects. Yolks from 3%-spirulina supplemented hens had higher retinol and lower α-tocopherol content (p = 0.0001) when compared to control. The supplementation with 1%-spirulina markedly decreased luminosity and increased redness (p = 0.0001) and yellowness (p = 0.0103). Short-term spirulina supplementation sl

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MURASE, TOSHIYUKI, KAORI CHIBA, TOMOKO SATO, KOICHI OTSUKI, and PETER S. HOLT. "Effects of Different Molting Procedures on Incidence of Salmonella Infection in Flocks of Naturally Contaminated Laying Hens in a Commercial Egg-Producing Farm by Detection of Yolk Antibodies to Salmonella in Eggs." Journal of Food Protection 69, no. 12 (2006): 2883–88. http://dx.doi.org/10.4315/0362-028x-69.12.2883.

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Indirect enzyme-linked immunosorbent assays (ELISAs) have been applied to detect immunoglobulin Y antibodies to different serotypes of Salmonella in the yolks of chicken eggs with heat-extracted antigens of Salmonella enterica serotypes Agona (SA), Cerro (SC), Enteritidis (SE), Montevideo (SM), and Putten (SP). The egg yolk samples examined were classified as positive if their ELISA absorbance values exceeded the value for eggs from specific-pathogen-free flocks by more than two standard deviations. Of 30 egg yolk samples from three flocks vaccinated with a killed SE vaccine, 29 were antibody

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Nalyvayko, Lyudmyla, Kateryna Rodionova, Svitlana Pankova, Natalia Shomina, Oleg Katerynych, and Mariia Khimych. "Comparative characteristics of eggs of chickens of domestic and foreign selection in their diverse age." Potravinarstvo Slovak Journal of Food Sciences 15 (March 28, 2021): 245–53. http://dx.doi.org/10.5219/1501.

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At this juncture, more and more attention is drawn to the preservation of the gene pool of local breeds of poultry, which have a set of valuable features, including high-quality eggs. In this study, the quality parameters of eggs (egg weight, weight, and proportion of yolk, weight, and proportion of albumen, yolk-albumen ratio, energy value, lipid and fatty acid content in the yolk) of chickens of Ukrainian selection(such hybrids as Plymouth white, Poltava Clay, Birkivska Barvysta and their interbreed hybrids) and foreign commercial crosses (Tetra SL, Tetra H, Super Harko, Lohmann Brown, Highs

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Welty, J. L., J. R. Belthoff, J. Egbert, and H. Schwabl. "Relationships between yolk androgens and nest density, laying date, and laying order in Western Burrowing Owls (Athene cunicularia hypugaea)." Canadian Journal of Zoology 90, no. 2 (2012): 182–92. http://dx.doi.org/10.1139/z11-125.

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Increases in yolk androgens within and among avian clutches have been correlated with decreased incubation time, increased aggression within a nest, increased begging behaviour, decreased immune response, and decreased life span. Although the mechanisms that lead to variability in yolk androgens within and between clutches are not completely known, yolk androgens can be a function of both social and environmental conditions. We were interested in if and how nesting density, laying date, and laying order influenced yolk androgens in Western Burrowing Owls ( Athene cunicularia hypugaea (Bonapart

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