Molecular Nutrition

Effects of Selenium-Enriched Yeast and Bacillus subtilis on Growth Performance, Serum Indices, Digestive Function of Hu Lambs

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

Received date: 2018-01-25

  Online published: 2018-08-18

Abstract

The present experiment was conducted to evaluate the effects of selenium-enriched yeast and Bacillus subtilis on growth performance, serum indices, nutrient apparent digestibility, digestive enzyme activities in pancreas and rumen fermentation parameters of Hu lambs. Twenty-one healthy weaned Hu lambs weighted (9.65±0.38) kg were randomly divided into control group, selenium-enriched yeast group (added 100 g/t selenium-enriched yeast in concentrate) and Bacillus subtilis group (added 100 g/t Bacillus subtilis in concentrate) with 7 lambs per groups. The feeding assay lasted for 28 days. The results showed that compared with control group:1) final weight and average daily gain of selenium-enriched yeast group and Bacillus subtilis group were significantly increased (P<0.05 or P<0.01), and the feed to gain ratios of concentrate and forage were significantly decreased (P<0.05 or P<0.01). 2) Serum contents of immunoglobulin A (IgA), immunoglobulin (IgG), immunoglobulin M (IgM) and interleukin 6 (IL-6), and glutathione peroxidase (GSH-Px) activity of selenium-enriched yeast group and Bacillus subtilis group were significantly increased (P<0.05 or P<0.01); serum malondialdehyde (MDA) content was significantly reduced (P<0.05), and serum interleukin 1 (IL-1) content and superoxide dismutase (SOD) activity were significantly increased in selenium-enriched yeast group (P<0.05 or P<0.01); serum contents of interleukin 2 (IL-2) and γ interferon (IFN-γ) of Bacillus subtilis group were significantly increased (P<0.05 or P<0.01). 3) The apparent digestibility of dry matter, crude protein, acid detergent fibre and neutral detergent fibre were significantly of selenium-enriched yeast group and Bacillus subtilis group were significantly increased (P<0.05 or P<0.01); the apparent digestibility of ether extract of Bacillus subtilis group was significantly increased (P<0.05). 4) Lipase activity of pancreas in Bacillus subtilis group and trypsin activity of pancreas in selenium-enriched yeast group were significantly increased (P<0.05). 5) The contents of ammonia nitrogen, acetic acid, propionic acid, isobutyric acid and butyric acid in rumen fluid of selenium-enriched yeast group and Bacillus subtilis group were significantly increased (P<0.05). In summary, dietary supplementation of selenium-enriched yeast and Bacillus subtilis improve growth performance, antioxidant capacity, immunity and digestive function of weaned Hu lambs.

Cite this article

CHENG Lianping, HE Mengchu, XIA Xiaodong, LI Manman, SHU Yingshuang, PENG Chenglu, FENG Shibin, WANG Xichun, LI Yu, WU Jinjie . Effects of Selenium-Enriched Yeast and Bacillus subtilis on Growth Performance, Serum Indices, Digestive Function of Hu Lambs[J]. Chinese Journal of Animal Nutrition, 2018 , 30(8) : 3189 -3198 . DOI: 10.3969/j.issn.1006-267x.2018.08.038

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