Results 41 to 50 of about 818,236 (379)
Assessing ventilation rate measurements in a mechanically ventilated laying hen facility
Poultry Science, 2019 Gaseous emission in laying hen facilities affects animal production performance and the environment. Emission is ruled by gas concentration and ventilation rate (VR), which are the key parameters to estimate precise emission factors.
E. Rosa +3 more
semanticscholar +1 more source
The Effects of Different Levels of Tomato Juice in Drinking Water on the Egg Quality, Performance, and Hematological Parameters of Babcock White Laying Hens [PDF]
Brazilian Journal of Poultry ScienceThis study investigates the use of tomato juice (TJ) to assess its effects on egg quality, laying hen performance, and various blood parameters. A total of 128 Babcock white laying hens, aged 50 weeks, were randomly divided into four groups (n=32), each ...
Ü Özçınar +8 more
doaj +1 more source
Production et caractéristiques physico-chimiques des œufs de la poule locale de Niamey (Niger)
Tropicultura, 2022 Production and physicochemical characteristics of eggs of local hen of Niamey (Niger) The objective of this study is to characterize the laying performances as well as the physical and nutritional qualities of the egg of the local hen of Niamey (Niger)
Adamou Guisso Taffa +5 more
doaj +1 more source
Variability of laying hen behaviour depending on the breed
Asian-Australasian Journal of Animal Sciences, 2019 Objective For many generations, most species of farm animals have been subjected to intense and strictly targeted selection for improvement of their performance traits.
Agnieszka Kozak +3 more
semanticscholar +1 more source
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 Emissions of Laying Hens as Affected by Stocking Density and Manure Accumulation Time [PDF]
, 2010 Different stocking densities (SDs) or space allocations are being practiced in commercial laying-hen operations as an attempt to improve hen welfare. Information concerning the impact of SD on accumulated manure properties (e.g., moisture content) and ...
Li, Hong +3 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