The Ethics of Laying Hen Genetics [PDF]
Journal of Agricultural and Environmental Ethics, 2019 AbstractDespite societal concerns about the welfare of commercial laying hens, little attention has been paid to the welfare implications of the choices made by the genetics companies involved with their breeding. These choices regarding trait selection and other aspects of breeding significantly affect living conditions for the more than 7 billion ...
Mia Fernyhough +4 more
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Progesterone in the Blood of the Laying Hen [PDF]
Nature, 1958 FRAPS et al. 1, using the bioassay method of Hooker and Forbes2, reported progestational activity in the peripheral blood of the hen. Layne et al. 3, using chromatographic procedures, failed to find progesterone in chicken blood although they did identify this substance in extracts of ovarian tissue. In preliminary studies in this laboratory4, chemical
F. W. Lorenz, I. M. Lytle
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Variation in digestibility parameters related to feed efficiency between and within two laying hen lines [PDF]
Poultry ScienceTo meet the increasing demand for eggs, while limiting the environmental impact, an increased efficiency of laying hen production is required. Feed efficiency (FE) plays a major role in this.
Ghyslaine C.B. Schopen +8 more
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Histology of the Ovary of the Laying Hen (Gallus domesticus)
Veterinary Sciences, 2017 The laying hen (Gallus domesticus) is a robust animal model for epithelial ovarian cancer. The use of animal models is critical in identifying early disease markers and developing and testing chemotherapies. We describe the microscopic characteristics of
K. Denise Apperson +3 more
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Dietary Hemp (Cannabis sativa L.) Products Enhance Egg Yolk Omega-3 Fatty Acids and Color Without Compromising Laying-Hen Performance: A Meta-Analysis [PDF]
AnimalsHemp (Cannabis sativa L.) products have gained attention in poultry nutrition for their rich content of polyunsaturated fatty acids (PUFAs), bioactive compounds, and potential functional benefits.
Yusup Sopian +3 more
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Iron metabolism in the laying hen [PDF]
Biochemical Journal, 1954 W. N. M. Ramsay, E. A. Campbell
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Effect of fermented laying hen manure and starter feed as growing media on black soldier fly larvae development [PDF]
BIO Web of Conferences, 2023 This study aimed to evaluate the development of Black Soldier Fly (BSF) larvae when reared on different feeding media, specifically using varying ratios of fermented laying hen manure and starter feed.
Wiyoso Shelfia Anggraini +3 more
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Welfare of laying hens on farm [PDF]
EFSA Journal, 2023 This scientific opinion focuses on the welfare of laying hens, pullets and layer breeders on farm. The most relevant husbandry systems used in Europe are described. For each system, highly relevant welfare consequences were identified, as well as related animal-based measures (ABMs), and hazards leading to the welfare consequences.
EFSA Panel on Animal Health and Animal Welfare, +33 more
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The effect of space allowance in the cage and floor systems on feather condition and egg production [PDF]
Biotechnology in Animal Husbandry, 2022 The egg production sector is in a transitional period with regard to the permitted housing systems, i.e. rearing in conventional cages under certain conditions to the complete ban of any form of cage system.
Škrbić Zdenka +6 more
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Deep Learning for Laying Hen Activity Recognition Using Wearable Sensors
Agriculture, 2023 Laying hen activities in modern intensive housing systems can dramatically influence the policies needed for the optimal management of such systems. Intermittent monitoring of different behaviors during daytime cannot provide a good overview, since daily
Mohammad Shahbazi +3 more
semanticscholar +1 more source