Effects of supplementation with beta-carotene on the growth performance and intestinal mucosal barriers in layer-type cockerels
文献类型： 外文期刊
作者： Hui, Junnan 1 ; Li, Lingxi 1 ; Li, Ruonan 1 ; Wu, Min 1 ; Yang, Yu 1 ; Wang, Jinghui 2 ; Fan, Yuanyuan 3 ; Zheng, Xin 1 ;
作者机构： 1.Jilin Agr Univ, Coll Anim Sci & Technol, Changchun, Peoples R China
2.Jilin Acad Agr Sci, Changchun, Peoples R China
3.Jilin Agr Univ, Coll Foreign Languages, Changchun, Peoples R China
关键词： Hyline Brown chicks; intestinal barriers; intestinal microbiota; RA-mediated pathway; beta-carotene
期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）
ISSN： 1344-3941
年卷期： 2020 年 91 卷 1 期
页码：
收录情况： SCI
摘要： beta-carotene is a robust modulator of mucosal barriers, and it can amplify the immunoglobulin A (IgA) response via the retinoic acid (RA)-mediated pathway. We investigated the influence of beta-carotene on intestinal barriers in layer-type cockerels. In this study, beta-carotene has a positive influence on growth performance and intestinal morphology. beta-carotene remarkably enhanced serum secretory immunoglobulin A (sIgA) levels, jejunal mucosal sIgA, and IgA concentrations. beta-Carotene significantly enhanced mRNA expression levels of IgA, CC chemokine receptor-9 (CCR9), polymeric immunoglobulin receptor (pIgR), and retinoic acid receptor alpha (RAR alpha) in the ileal tissues and pIgR in the jejunal tissues. beta-Carotene improves mRNA expression of intestinal barrier-related proteins including: mucin-2 (MUC-2), zonula occludens-2 (ZO2), occludins (OCLN), and zonula occludens-1 (ZO-1) in the ileal tissues. Moreover, beta-carotene decreased the levels of Escherichia coli and elevates the levels of Lactobacillus. The results indicate that beta-carotene can promote growth performance and contribute to the gradual development of intestinal barriers in Hyline Brown chicks. This study enriches our knowledge about the effects of beta- carotene on intestinal barrier and highlights a theoretical basis of beta-carotene application in the poultry industry.
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