IMPACT OF FEED RESTRICTED SYSTEM AND ZINC FORMS ON SOME PRODUCTIVE PERFORMANCE TRAITS, EGG QUALITY PARAMETERS AND ECONOMIC EFFICIENCY OF MANDARAH LAYING HENS. [PDF]
Journal of Productivity and Development, 2021 This study was conducted to determine the effect of feeding different level of restricted feed with different forms of zinc(Zn) on productive performance, egg quality traits and economic efficiency of Mandarah (Egyptian local developed strain) laying ...
Ahmed Bealish +4 more
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Use of perches and nestboxes by laying hens in relation to social status, based on examination of consistency of ranking orders and frequency of interaction [PDF]
, 2001 Four groups of 15-19 adult ISA Brown hens were studied in pens to assess the relationship between social status and use of perches and nestboxes.
Savory, C. J. +5 more
core +1 more source
, 2022 The dataset contain a CT scan of a laying hen at 0.2 mm slice ...
Ors Petnehazy (9651137)
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Effect of housing system on the calcium requirement of laying hens and on eggshell quality
Czech Journal of Animal Science, 2008 The effects of housing systems on the calcium requirement for eggshell production, eggshell quality and on the breaking strength of the hen's tibia were evaluated.
M. Lichovníková, L. Zeman
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Veterinary Medicine International, 2021 Colibacillosis in Indonesia until now still appears frequently, so the case of colibacillosis laying hens cannot reach the peak of egg production; the egg production period is delayed and easily infected with other diseases.
Sunaryo Hadi Warsito +9 more
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Microbiome applications for laying hen performance and egg production
Poultry Science, 2022 : Management of laying hens has undergone considerable changes in the commercial egg industry. Shifting commercial production from cage-based systems to cage-free has impacted the housing environment and created issues not previously encountered. Sources
Steven C. Ricke +2 more
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Threonine requirements of laying hens
Poultry Science, 1998 In order to determine the Thr requirement of laying hens, two experiments were conducted using laying performance and plasma Thr concentration as parameters. At 29 and 39 wk of age, 100 and 600 laying hens in Experiments 1 and 2, respectively, with average BW and high egg production rate, were randomized, housed in individual cages, and given free ...
T, Ishibashi +5 more
openaire +2 more sources
Influence of light wavelength on viability and reproductive function of hens
Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки, 2021 The article presents the results of influence of monochrome light with different light wavelengths on the hens’ viability and productivity. For this purpose, in the conditions of a modern complex for production of food eggs in a poultry house with an ...
Yu. V. Osadcha, G. I. Sakhatsky
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LIMESTONE OF BUKIT KAMANG AS A CALCIUM SOURCE FOR LAYING HENS [PDF]
, 2009 A feeding trial was conducted to study the use of natural limestone meal originated from Bukit Kamang located at Agam district of West Sumatra to substitute fresh water oyster shell as the main source of calcium in diet of laying hens. The mineral feed
Khalil, Khalil, Anwar, S
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Effect of Different Cage Densities and Age on Keel Bone Damage and Some Hormones in Laying Hens [PDF]
Brazilian Journal of Poultry ScienceThis study aimed to determine the effect of three distinct cage densities (750 cm2/hen, 535 cm2/hen, and 375 cm2/hen) on the keel bone damage of brown (Hyline Brown, HB) and white (Isa Tinted, IT) laying hens by x-ray method.
A Uysal, E Laçin
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