Results 41 to 50 of about 171,942 (306)

Effect of diet supplemented with fermented feed on intestinal function， nutrient excretion and serum biochemical indexes of laying hens in later stage of laying period

Siliao yanjiu, 2022
The experiment was to investigate the effect of fermented diet on laying rate, intestinal function, nutrient excretion and serum biochemical indexes of laying hens in late laying period. A total of 960 580-day-old Hyline brown commercial laying hens were
Xu-cheng ZHENG, Ming YAN, Hai-ming YANG, Chi ZHANG, Hai-yang GU, Jian-hua XU, Xiao-li WAN, Zhong-jun FAN   +7 more
doaj  

Physiological Stress in Laying Hens

Poultry Science, 2006
Stress responses in laying hens were mediated by continuous infusion of adrenocorticotropin (ACTH) via osmotic pumps. The ACTH was dissolved in saline solution (0.85%), and each pump delivered 8 IU of ACTH per kilogram of BW per day at the rate of 1 microL/h for 7 d. Control hens received pumps loaded with saline. Measurements were made at 6 d postpump
J Odihambo, Mumma, J P, Thaxton, Y, Vizzier-Thaxton, W L, Dodson   +3 more
openaire   +2 more sources

Effects of Clostridium butyricum on Production Performance and Bone Development of Laying Hens

Veterinary Sciences
Probiotics are safe, inexpensive, and effective feed additives, and Clostridium butyricum (CB) has been reported to regulate bone health in addition to having conventional probiotic effects.
Jiaqi Huang, Lulu Cui, Hai Lin, Mengze Song, Shuhong Sun   +4 more
doaj   +1 more source

A QTL for osteoporosis detected in an F2 population derived from White Leghorn chicken lines divergently selected for bone index [PDF]

, 2007
Osteoporosis, resulting from progressive loss of structural bone during the period of egg-laying in hens, is associated with an increased susceptibility to bone breakage.
Preisinger, R., Fleming, R H, Dunn, I. C., C. C. Whitehead, R. Preisinger, McCormack, H A, Morrice, D., Preisinger, R, Fleming, R. H., D. Morrice, R. H. Fleming, Burt, D. W., I. C. Dunn, Burt, D W, Dunn, I C, H. A. McCormack, McCormack, H. A., Whitehead, C. C., Morrice, D, Whitehead, C C, D. W. Burt   +20 more
core   +1 more source

Diagnostic value of integrated immunohematological indices as markers of chronic stress in laying hens

, 2021
The study of stress in the conditions of industrial technologies of keeping laying hens and determining the level of technological stressors influence on the physiological state of poultry is a necessary condition for the development of new methods of ...
Yu. Osadcha, null null
core   +1 more source

Performance of commercial laying hen genotypes on free range and organic farms in Switzerland, France and The Netherlands [PDF]

, 2012
1. A total of 257 farmers with free ranging laying hens (organic and conventional) in Switzerland, France and The Netherlands with 273 flocks were interviewed to determine the relationships between the genotype of the hens, management conditions and ...
Bestman, Monique, Amsler, Zivile, Maurer, V., Leenstra, Ferry, Maurer, Veronika, Reuvekamp, Berry, van Niekerk, Thea, Zeltner, E., Zeltner, Esther, Galea, Fabien, Sambeek van, F., Leenstra, F.R., Galea, F., Bestman, M.W.P., Niekerk, T.G.C.M., van, van Sambeek, Frans, Reuvekamp, B.F.J.   +16 more
core   +1 more source

Tea polyphenols increase the antioxidant status of laying hens fed diets with different levels of ageing corn

Animal Nutrition, 2021
This study was conducted to evaluate the effects of ageing corn levels (stored for 4 years) with or without the supplementation of tea polyphenols (TPP) on the performance, egg quality and antioxidant status of laying hens.
Ling Zhou, Xuemei Ding, Jianping Wang, Shiping Bai, Qiufeng Zeng, Zuowei Su, Yue Xuan, Keying Zhang   +7 more
doaj   +1 more source

Behavioural Priorities of Laying Hens

Avian and Poultry Biology Reviews, 2003
This article reviews the behavioural requirements of laying hens. It primarily concentrates on evidence from consumer demand studies and relates this to the behavioural and physical consequences of denying hens opportunities to express certain activities.
Jonathan Cooper, Melissa J. Albentosa
openaire   +2 more sources

Borosulfates Hosting Se42+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism

Angewandte Chemie, EarlyView.
Apart from (transition) metal (oxo)halides only few hosts stabilize chalcogenide cations in purely oxoanionic coordination environment. Herein, we report on five borosulfates containing the Se42+ ion and characterize the compounds using X‐ray diffraction, diffuse reflectance spectroscopy, density functional theory (DFT) calculations along with magnetic
Erich Turgunbajew, Marios Symeonidis, Jörn Bruns, Sara N. Özbay, Jan Langwald, Mathias S. Wickleder, Robert E. Dinnebier, Linda S. Reitz, Richard Dronskowski, Lars Schumacher, Rainer Pöttgen, Henning A. Höppe   +11 more
wiley   +2 more sources

Research Note: Correlation between the reproductive tract microbiota and speckled eggs in laying hens

Poultry Science
: The microbiomes of the reproductive tract play a crucial role in the egg production and quality and reproductive health of laying hens. Speckled eggs are characterized by shells with brown spots of varying sizes and commonly produced by brown-shelled ...
Xue Cheng, Yimin Wei, Yuchen Liu, Ying Ma, Yalan Zhang, Wen Li, Yuxing Luo, Wenliang Yan, Lujiang Qu, Zhonghua Ning   +9 more
doaj   +1 more source