Results 41 to 50 of about 816,053 (342)
Poultry Science, 2018 &NA; 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*,
F. Sirri +3 more
semanticscholar +1 more source
Revista Brasileira de Zootecnia, 2021 The objective of this study was to compare the antimicrobial activity of macrophages and serum in laying hen (MM, CC, and CCc) and broiler chicken lineages (TT and LL). Macrophages were evaluated for phagocytic and antimicrobial activity.
Miriele Caroline da Silva +6 more
doaj +1 more source
Ammonia and Carbon Dioxide Emissions vs. Feeding and Defecation Activities of Laying Hens [PDF]
, 2008 This study characterizes dynamic ammonia (NH3) and carbon dioxide (CO2) emissions associated with feeding and defecation activities of laying hens. Manure handling scheme used was reflective of commercial manure-belt house operation.
Li, Hong +4 more
core +3 more sources
Poultry Science, 2022 : The paper aimed to study the effects of light regime on circadian rhythmic behavior and reproductive parameters in a native laying hen, Beijing You Chicken (BYC) during 22 to 30 wk.
A.L. Geng +6 more
doaj +1 more source
The Human-Animal Relationship in Australian Caged Laying Hens
Animals, 2019 Studies on farm animals have shown relationships between stockperson attitudes and behaviour and farm animal fear, stress and productivity. This study investigated how the avoidance behaviour of Australian commercial caged laying hens may be related to ...
Lauren E. Edwards +3 more
doaj +1 more source
Examining the catching, carrying, and crating process during depopulation of end-of-lay hens
Journal of Applied Poultry Research, 2021 Summary: Laying hen flocks undergo depopulation at end of lay, a difficult process that has been associated with injuries and is considered stressful to hens and human collectors. To date, most assessments of depopulations have been conducted within cage
C. Gerpe +3 more
doaj +1 more source
A Description of Laying Hen Husbandry and Management Practices in Canada
Animals, 2018 Simple Summary Furnished cage and non-cage (single-tier or multi-tier) housing systems are increasingly used worldwide in efforts to improve laying hen welfare. Canadian laying hen farms are undergoing a similar transition, however, little is known about
N. van Staaveren +5 more
semanticscholar +1 more source
Poultry Science, 2021 The fatty liver hemorrhage syndrome in laying hens is a disease of lipid metabolism disorders. Importantly, energy sensor AMP-activated protein kinase (AMPK) plays an essential role in homeostasis regulation of liver lipid.
Kun Zhang +11 more
doaj +1 more source
Effects of Laying-Hen Strain on Manure Properties and Ammonia Emission [PDF]
, 2012 Ammonia (NH3) emissions from laying hens are affected by nutrient content of the diet, manure quantity, and manure properties such as moisture content, nitrogen content, and pH. These production traits may vary with strain of the hen.
Arthur, James +9 more
core +3 more sources
Optimising the use of hen runs by structures [PDF]
, 2005 One of the main problems in free range husbandry of laying hens is the uneven use of the hen run. This leads to an overuse of pasture near the hen house.
Hirt, Helen, Zeltner, Esther
core