Results 41 to 50 of about 92,373 (234)

Effect of Broiler Breeder Age on the Intestinal Mucosa Development of the Embryos at 20 Days of Incubation

Brazilian Journal of Poultry Science
This study investigated the effect of broiler breeder age on the morphological development of the small intestine broiler embryos (villus height, crypt depth, microvillus height, and villus density) at 20 day of incubation.
A Maiorka, AVF Silva, E Santin, LDG Bruno, IC Boleli, M Macari   +5 more
doaj   +1 more source

A Systematic Approach to Solving Hatchability and Chick Quality Problems

EDIS, 2003
A program involving routine analyses of incubating eggs and hatch residue provides a powerful monitoring and diagnostic tool to breeder, broiler, and hatchery managers.
Gary D. Butcher, Amir H. Nilipour
doaj   +5 more sources

Gut capacity of broiler breeder hens

British Poultry Science, 2021
1. Broiler breeders are subjected to qualitative or quantitative feed restrictions to prevent obesity, which causes major health and welfare problems. Diluting their feed by adding inert or low nutrient, bulky materials can reduce obesity, but the capacity of the gut needs to be determined to apply this strategy successfully.
Nascimento, M. Q., Gous, R. M., Reis, M. P., Viana, G. S., Nogueira, B. R. F., Sakomura, NK.   +6 more
openaire   +4 more sources

Studies on the Biotin Requirement of Broiler Breeders ,

Poultry Science, 1972
Abstract The minimum requirement of biotin for maximum hatchability of eggs and livability of chicks was determined for broiler breeder hens maintained in individual cages. Groups of hens were fed casein-gelatin, glucose diets containing 20, 40, 60, 100, 180 and 340 μg. biotin/kg. of diet. The requirement was found to be approximately 100 μg.
L E, Brewer, H M, Edwards
openaire   +2 more sources

The Role of miRNAs in Chicken Immune Regulation and Prospects for Disease‐Resistant Breeding

Animal Research and One Health, EarlyView.
A schematic workflow illustrating the screening of disease‐resistant miRNAs and the generation of miRNA‐based disease‐resistant chickens via PGC‐mediated germline genome editing. ABSTRACT MicroRNAs (miRNAs) are emerging as pivotal regulators of the immune system, playing a decisive role in shaping disease resistance in chicken.
Qiangzhou Wang, Weiran Wu, Qingqing Cai, Jiaxing Wang, Qi Gao, Muhammad Iftikhar, Yulin Bi, Hao Bai, Lihong Gu, Guobin Chang, Shihao Chen   +10 more
wiley   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 more
wiley   +1 more source

Comparative Meta‐Analysis of Antimicrobial Peptides in Aquatic and Terrestrial Livestock Species

Animal Research and One Health, EarlyView.
A global meta‐analysis of 58 studies (926 effect sizes and 29 species across five taxa) revealed that dietary antimicrobial peptides generally improve growth performance, blood metabolites, and immune responses. The greatest benefits were observed in omnivorous livestock, such as pigs and chickens. Dose‐duration effects were evident. An optimal outcome
Lily Liu, Xu Luo, Qin Zhang, Jinhai Wang, Alan E. Wilson   +4 more
wiley   +1 more source

Evaluation of the effectiveness of phytogenic feed additive on hatchable egg production performance in Cobb 430 Y breeders under field conditions

Veterinary Research Notes, 2021
Objective: The objective of poultry breeder management is the production of fertilized eggs. The purpose of this study was to see how phytogenic feed additive (PFA) affected hatchable egg production in Cobb 430 Y breeders and the economic ramifications.
Vishwanath Gopal Bhagwat, Balamurugan Ellusamy, Rangesh Paramesh   +2 more
doaj   +1 more source

Zinc requirements of broiler breeder hens

Poultry Science, 2019
One hundred and twenty Cobb 500 hens, 20 wk of age, were randomly allocated into individual cages with the objective of estimating their Zn requirements. The study was composed of 3 phases: adaptation to cages (basal diet), depletion (deficient diet containing 18.7 ± 0.47 ppm Zn) for 7 wk, and experimental phases.
A N, Mayer, S L, Vieira, E, Berwanger, C R, Angel, L, Kindlein, I, França, T L, Noetzold   +6 more
openaire   +2 more sources

Longitudinal Modulation of the Gut Microbiome and Growth Performance by Phytochemicals as Antibiotic Alternatives in Swine Production

Animal Research and One Health, EarlyView.
We conducted a longitudinal trial across nursery, growing, and finishing phases, showing that phytochemical supplementation as a potential antibiotic alternative reduced potential pathogens and promoted beneficial Lactobacillus amylovorus in the nursery phase, and enriched amino acid and carbohydrate metabolism pathways (prediction) during finishing ...
Ziyu Liu, Samantha Howe, Yang Tian, Alisun N. Watson, Jason E. Farrar, Christopher E. Randolph, Jaime Andrés Ángel Isaza, Álvaro José Uribe, Yan Huang, Michael Looper, Jiangchao Zhao, Tsungcheng Tsai   +11 more
wiley   +1 more source