Molecular Nutrition

Effects of Selenium-Enriched Yeast and Bacillus subtilis on Intestinal Mucosal Morphology and Rectum Microflora of Hu Lambs

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  • College of Animal Science and Technology, The Open Fund of Anhui Province Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding, Anhui Agricultural University, Hefei 230036, China

Received date: 2018-04-16

  Online published: 2018-11-20

Abstract

The present experiment was conducted to evaluate the effects of selenium-enriched yeast and Bacillus subtilis on intestinal mucosal morphology and rectum microflora of Hu lambs. Twenty-one Hu Lambs, weighted (9.65±0.38) kg, were divided into 3 groups:control group, selenium-enriched yeast group and Bacillus subtilis group, with 7 lambs per group. The lambs in the control group were fed a basal diet, and in experimental groups, 100 g/t selenium-enriched yeast and Bacillus subtilis were added into concentrate, respectively. The experiment lasted for 28 days. The results showed as follows:1) compared with the control group, the villus height of duodenum, jejunum and ileum in the selenium enriched yeast group and Bacillus subtilis group significantly increased (P<0.05); the crypt depth of duodenum and ileum significantly decreased (P<0.05), while the crypt depth of jejunum significantly decreased (P<0.01); the villus height to crypt depth ratio (V/C) of duodenum and jejunum significantly increased (P<0.01), and the V/C of ileum significantly increased (P<0.05). 2) The supplement of selenium-enriched yeast and Bacillus subtilis affected the α diversity of the rectal flora of Hu lambs, resulting in different abundances of the rectal flora at the levels of the class, order, family, genus, species. It is concluded that the supplement of selenium enriched yeast and Bacillus subtilis in the diet can significantly enhance the development of the small intestine of lambs, increase the abundance of beneficial rectum microflora and reduce the proliferation of harmful bacteria.

Cite this article

CHENG Lianping, SHU Yingshuang, HE Mengchu, XIA Xiaodong, LI Yu, FENG Shibin, WANG Xichun, WU Jinjie . Effects of Selenium-Enriched Yeast and Bacillus subtilis on Intestinal Mucosal Morphology and Rectum Microflora of Hu Lambs[J]. Chinese Journal of Animal Nutrition, 2018 , 30(11) : 4660 -4669 . DOI: 10.3969/j.issn.1006-267x.2018.11.043

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