Effects of Compound Probiotics on Rumen Microbial Population in Sheep Fed Different Concentrate to Roughage Ratio Diets

  • XIE Mingxin ,
  • LI Changrui ,
  • YANG Xiaodong ,
  • SHI Caixia ,
  • WANG Hairong
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  • Inner Mongolia Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China

Received date: 2020-03-19

  Online published: 2020-09-17

Abstract

The objective of this study was to investigate the effects of compound probiotics on rumen typical microbial populations of sheep fed with different concentrate to roughage ratio diets. Six adult Mongolian sheep with rumen fistulas were randomly divided into two groups. Cross-over experiment design was used. The experiment contained two periods. In the period 1, 3:7 or 7:3 concentrate to roughage ratio of diets which both supplemented with compound probiotics were fed two groups, respectively. In period 2, the two groups exchanged the diets. Each period lasted for 40 days, including a 15-day adaptation and a 25-day experimentation. The interval between the two periods was 21 days. The results showed as follows:compared with sheep fed compound compound probiotics for 1 d, under low-concentration diet condition, the number of Butyrivibrio fibrisolvens and Ruminococcus flavefaciens significantly increased by feeding probiotics for 10 days (P<0.05), the number of Selenomonas ruminantium, Butyrivibrio fibrisolvens, Ruminococcus flavefaciens, Ruminococcus albus and total methanogens significantly increased by feeding compound probiotics for 20 days (P<0.05); under high-concentrate diet condition, the number of Selenomonas ruminantium, Ruminococcus albus and total methanogens significantly decreased by feeding compound probiotics for 10 days (P<0.05). Moreover, the number of Ruminococcus albus significantly decreased by feeding compound probiotics for 20 days (P<0.05) but was higher than feeding that for 10 days (P<0.05). It is concluded that different concentrate to roughage ratio diets supplemented with the same compound probiotics has different effects on the beneficial flora; and the compound probiotic has a batter probiotic impact when supplied to 3:7 diets.

Cite this article

XIE Mingxin , LI Changrui , YANG Xiaodong , SHI Caixia , WANG Hairong . Effects of Compound Probiotics on Rumen Microbial Population in Sheep Fed Different Concentrate to Roughage Ratio Diets[J]. Chinese Journal of Animal Nutrition, 2020 , 32(9) : 4418 -4428 . DOI: 10.3969/j.issn.1006-267x.2020.09.053

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