Effects of Small Peptide Supplementation on Growth Performance, Intestinal Barrier of Laying Hens During the Brooding and Growing Periods

The growing period is a critical period for growth and development in laying hens. During this period, chicks grow rapidly, but are accompanied by unstable digestive function, incomplete organ development, and high mortality. Small peptide, a feed additive, which has been proved to promote intestina...

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Bibliographic Details
Published in:Frontiers in immunology 2022-07, Vol.13, p.925256-925256
Main Authors: Zhao, Xiyu, Zhang, Yao, He, Wentao, Wei, Yuanhang, Han, Shunshun, Xia, Lu, Tan, Bo, Yu, Jie, Kang, Houyang, Ma, Mengen, Zhu, Qing, Yin, Huadong, Cui, Can
Format: Article
Language:English
Subjects:
anti-oxidation
growth performance
immune
Immunology
intestinal health
laying hen
small peptide
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Summary:The growing period is a critical period for growth and development in laying hens. During this period, chicks grow rapidly, but are accompanied by unstable digestive function, incomplete organ development, and high mortality. Small peptide, a feed additive, which has been proved to promote intestinal development and immunity in poultry. In order to elucidate the effects of small peptides on growth performance, immunity, antioxidant capacity, and intestinal health of growing laying hens, a total of 900 Tianfu green shell laying hens (1-day-old) were randomly divided into 5 treatments with 6 replicates of 30 birds each in this 18-week trial. Dietary treatments included a corn-soybean meal-based diet supplemented with 0 g/kg, 1.5 g/kg, 3.0 g/kg, 4.5 g/kg and 6.0 g/kg small peptide, respectively. The results showed that the supplementation of small peptides significantly increased growth rate ( P
ISSN:1664-3224
1664-3224
DOI:10.3389/fimmu.2022.925256