SWINE NUTRITION AND FEED

Effects of Dietary Streptococcus faecalis and Bacillus subtilis on Growth Performance and Intestinal Health of Weaned Piglets

  • WANG Hanxing ,
  • HU Qianli ,
  • YANG Jantao ,
  • WU Shengru ,
  • ZHANG Wenye ,
  • YANG Xiaojun ,
  • XU Junjie ,
  • LIU Fuzhu
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  • 1. College of Animal Science and Technology, Northwest Agricultural and Forestry University, Yangling 712100, China;
    2. Shaanxi Shiyang Agriculture Technology Co., Ltd., Xi'an 710021, China;
    3. Qiquan Nongmu Group Co., Ltd., Suining 629000, China

Received date: 2019-11-21

  Online published: 2020-05-15

Abstract

This experiment was conducted to investigate the effects of dietary individually supplementation of Streptococcus faecalis and Bacillus subtilis and their mixed supplementation on growth performance and intestinal health of weaning piglets. Two hundred and forty 21-day-age "Duroc×Landrace×Yorkshire" crossed weaned piglets were randomly allotted to 4 groups with 6 replicates per group and 10 piglets per replicate. Piglets in the control group were fed a basal diet, piglets in the Streptococcus faecalis group were fed the basal diet+4×108 CFU/kg Streptococcus faecalis, piglets in the Bacillus subtilis group were fed the basal diet+5×109 CFU/kg Bacillus subtilis, and piglets in the mixed group were fed the basal diet+4×108 CFU/kg Streptococcus faecalis+5×109 CFU/kg Bacillus subtilis. The experiment lasted for 28 days. The results showed as follows:1) compared with the Streptococcus faecalis group and Bacillus subtilis group, the final body weight, average daily gain and average daily feed intake of mixed group were significantly increased (P<0.10). 2) Compared with the control group, the villi height in ileum of Streptococcus faecalis group was significantly increased (P<0.05); compared with the Streptococcus faecalis group and Bacillus subtilis group, the crypt depth in duodenum of mixed group was significantly decreased (P<0.05). 3) Compared with the control group, the apparent digestibilities of lysine, histidine, isoleucine, leucine and threonine of Streptococcus faecalis group were significantly increased (P<0.05), the apparent digestibilities of lysine, isoleucine, leucine, phenylalanine and valine of Bacillus subtilis group were significantly increased (P<0.05); compared with the Streptococcus faecalis group and Bacillus subtilis group, the apparent digestibilities of histidine, aspartic acid and glutamate of mixed group were significantly increased (P<0.05). 4) Compared with the control group, the relative abundance of Lactobacillus of Bacillus subtilis group was increased, and the relative abundance of Leishmania was decreased. 5) Compared with the control group, the contents of propionic acid and isobutyric acid of Streptococcus faecalis group were significantly increased (P<0.05), and the isovaleric acid content of Bacillus subtilis group was significantly increased (P<0.05). In conclusion, the dietary individually supplementation of Streptococcus faecalis and Bacillus subtilis can improve the jejunal flora of piglets, promote intestinal development, improve amino acids digestibility and increase the content of short chain fatty acid in jejunum chyme. The mixed supplementation of Streptococcus faecalis and Bacillus subtilis have better effects on enhance the function of intestinal digestibility and absorption capacity.

Cite this article

WANG Hanxing , HU Qianli , YANG Jantao , WU Shengru , ZHANG Wenye , YANG Xiaojun , XU Junjie , LIU Fuzhu . Effects of Dietary Streptococcus faecalis and Bacillus subtilis on Growth Performance and Intestinal Health of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2020 , 32(5) : 2074 -2086 . DOI: 10.3969/j.issn.1006-267x.2020.05.016

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