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Effects of dietary replacement of soybean meal with dried distillers grains with solubles on the microbiota occupying different ecological niches in the rumen of growing Hu lambs

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Journal of Animal Science and Biotechnology 2021年第2期12卷 677-688页

作者： Junshi Shen Zhipeng Li Zhongtang Yu Weiyun Zhu Laboratory of Gastrointestinal Microbiology Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal HealthCollege of Animal Science and TechnologyNanjing Agricultural UniversityNanjing 210095China National Center for International Research on Animal Gut Nutrition Nanjing Agricultural UniversityNanjing 210095China Department of Special Animal Nutrition and Feed Science Institute of Special Animal and Plant SciencesChinese Academy of Agricultural SciencesChangchun 130112China Department of Animal Sciences The Ohio State UniversityColumbusOH 43210USA

Background:Diet has a profound impact on the rumen microbiota,and the impact can vary among the different rumen ecological niches(REN).This study investigated the effects of dietary replacement of soybean meal(SBM)with dried distillers grains with solubles(DDGS)on the rumen microbiota occupying different REN of growing Hu *** a 9-week feeding trial,6 lambs from each dietary treatment(SBM ***-based diets)were slaughtered for sample *** microbiota of the rumen solid,liquid,and epithelium fractions was examined using amplicon sequencing analysis of bacterial 16S rRNA gene,functional prediction,and ***:No interaction of dietary protein source(PS)and REN were detected for virtually all the measurements made in this *** DDGS substitution resulted in very limited influence on bacterial community ***,the metabolic pathways predicted from 16S rRNA gene sequences varied greatly between SBM-and DDGS-based *** populations of rumen total bacteria,fungi,sulfate-reducing bacteria(SRB),and methanogens were not influenced by DDGS substitution,but the population of protozoa was *** bacterial communities in rumen solid(RS)and liquid(RL)were similar in taxonomic composition but were different in relative abundance of some *** contrast,the bacterial composition and relative abundance of rumen epithelium(RE)were greatly distinct from those of the RS and the *** alignment with the bacterial relative abundance,the metabolic pathways predicted from 16S rRNA genes also varied greatly among the different *** populations of total bacteria,protozoa,and methanogens attached to the RE were smaller than those in the RS and RL,and the fungal population on the rumen epitheliumwas smaller than that in the RS but similar to that in the *** the contrary,the SRB population on the RE was greater than that in the RS and ***:Substitution of SBM with DDGS had greater impact to the protozoa than to the other microbes,and

关键词： Distillers dried grains with solubles Growing lamb Microbiota ruminal ecological niche Soybean meal

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