Weaning is a transition period for piglets that is from breast-fed to solid diet. It may cause retarded growth and high diarrhea rate due to the change in microbial population in the intestinal tract at the stressful time. The aim of study was conducted to evaluate the effects of mannan-oligosaCcharide on the growth performance, diarrhea rate and fermentation characteristics of weaning piglets in vitro and in vivo, while bacterial community and Lactobacillus composition were also investigated.
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