Results 31 to 40 of about 128,209 (338)

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, Issa Salissou, Maman-Bachir Souley Ali, Johann Detilleux, Chaibou Mahamadou, Nassim Moula   +5 more
doaj   +1 more source

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 ...
Teru Ishibashi, T Itoh, Shinobu Fujimura, Reiko Watanabe, Y Ogawa, Kazuyuki Koide   +5 more
openaire   +3 more sources

Innate immunity in chicken lines developed by EMBRAPA Suínos e Aves: antimicrobial activity of macrophages and serum

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, Ivete Conchon-Costa, Gerson Nakazato, João Waine Pinheiro, Mônica Corrêa Ledur, Wagner Loyola, Emerson José Venancio   +6 more
doaj   +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 Science
This 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, A Iqbal, C Uyarlar, EE Gültepe, IS Çetingül, OK Türedi, B Kenar, RU Khan, I Bayram   +8 more
doaj   +1 more source

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, Karyn E. Bird, Gita Cherian, Christiane V. Löhr   +3 more
doaj   +1 more source

Virginiamycin and Laying Hen Performance

Poultry Science, 1985
Two experiments were conducted for five 28-day periods each. In Experiments 1 and 2, Hyline W-36 hens, 36 and 26 weeks of age, respectively, were used. Experiment 1 was designed to measure the effect of virginiamycin on hen performance and egg characteristics when supplementing a diet having low pigmentation potential.
R. H. Harms, Richard D. Miles, D. M. Janky   +2 more
openaire   +2 more sources

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, Grahame J. Coleman, Kym L. Butler, Paul H. Hemsworth   +3 more
doaj   +1 more source

Application of Malathion to the Laying Hen

Poultry Science, 1968
Abstract INTRODUCTION THE increased use of pesticides in and around the poultry house has paralleled the increase in other areas of animal and plant agriculture in the United States. Still, the use of pesticides is not equally viewed by everyone.
James Ning, Shu Min Ning, W. W. Marion
openaire   +3 more sources

Economic sustainability of extending lay cycle in the supply-managed Canadian egg industry

Frontiers in Animal Science, 2023
The productivity levels of the Canadian egg industry have increased over the years, including hen productivity and feed conversion efficiency. Moreover, genetic improvements combined with improved feed and light management have recently resulted in hens ...
Ousmane Z. Traore, Maurice Doyon
doaj   +1 more source

Lab-Scale Assessment of Gaseous Emissions from Laying-Hen Manure Storage as Affected by Physical and Environmental Factors [PDF]

, 2010
Manure-belt (MB) and high-rise (HR) laying-hen houses are the two predominant housing types in the U.S. Compared with HR houses, MB houses have better indoor air quality and lower aerial emissions as a result of frequent (every 1 to 4 d) manure removal ...
Li, Hong, Xin, Hongwei, Xin, Hongwei
core   +3 more sources