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Dynamic Alterations In Early Intestinal Development, Microbiota And Metabolome Induced By In Ovo Feeding Of L-Arginine In A Layer Chick Model

文献类型： 外文期刊

作者： Dai, D; Wu, SG; Zhang, HJ; Qi, GH; Wang, J

作者机构：

关键词： Development; In Ovo Feeding; Intestinal Microbiota; L-Arginine; Layer Chick; Metabolomics

期刊名称： JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY

ISSN： 2049-1891

年卷期： 2020 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Background Prenatal nutrition is crucial for embryonic development and neonatal growth, and has the potential to be a main determinant of life-long health. In the present study, we used a layer chick model to investigate the effects of in ovo feeding (IOF) of L-arginine (Arg) on growth, intestinal development, intestinal microbiota and metabolism. The treatments included the non-injected control, saline-injected control, and saline containing 2, 6, or 10 mg Arg groups. Results IOF Arg increased early intestinal index and villus height, and enhanced uptake of residual yolk lipid, contributing to subsequent improvement in the early growth performance of chicks. Prenatal Arg supplementation also increased the early microbial alpha-diversity, the relative abundance of Lactobacillales and Clostridiales, and decreased the relative abundance of Proteobacteria of cecum in chicks. Furthermore, the shift of cecal microbiota composition and the colonization of potential probiotics were accelerated by IOF of Arg. Simultaneously, metabolomics showed that metabolisms of galactose, taurine-conjugated bile acids and lipids were modulated to direct more energy and nutrients towards rapid growth of intestine at the beginning of post-hatch when embryos received IOF of Arg. Conclusions Prenatal Arg supplementation showed beneficial effects on the early intestinal development, cecal microbiota and host metabolism of layer chicks, contributing to subsequent improvement in the early growth performance. These findings provide new insight into the role of IOF of Arg in the establishment of the gut microbiota of newly-hatched layer chicks, and can expand our fundamental knowledge about prenatal nutrition, early bacterial colonization and intestinal development in neonate.

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