Journal
NPJ BIOFILMS AND MICROBIOMES
Volume 7, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41522-021-00215-6
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Funding
- National Key Research and Development Projects [2017YFD0500500]
- National Natural Science Foundation of China [31902184]
- China Postdoctoral Science Foundation [2019M653774]
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Ruminal microbiota undergo frequent changes with high grain diets, potentially leading to the occurrence of subacute ruminal acidosis (SARA). Significant bacterial differences were observed between goats with SARA and healthy goats, indicating potential pathogenic risks associated with altered microbiota.
Ruminal microbiota changes frequently with high grain diets and the occurrence of subacute ruminal acidosis (SARA). A grain-induced goat model of SARA, with durations of a significant decrease in the rumen pH value to less than 5.6 and an increase in the rumen lipopolysaccharides concentration, is constructed for real-time monitoring of bacteria alteration. Using 16 S rRNA gene sequencing, significant bacterial differences between goats from the SARA and healthy groups are identified at every hour for six continuous hours after feeding. Moreover, 29 common differential genera between two groups over 6 h after feeding are all related to the altered pH and lipopolysaccharides. Transplanting the microbiota from donor goats with SARA could induce colonic inflammation in antibiotic-pretreated mice. Overall, significant differences in the bacterial community and rumen fermentation pattern between the healthy and SARA dairy goats are real-time monitored, and then tested using ruminal microbe transplantation to antibiotic-treated mice.
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