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The effect of acarbose addition on rumen and hindgut fermentation in dairy cows fed high-concentrate diets Effects of plant solid powder and ethanol extract of Impatiens balsamina on microbial metabolic parameters during in vitro rumen fermentation Effect of acarbose addition on acute and subacute rumen acidosis in an in vitro fermentation study Effects of exogenous fibrolytic enzymes on the enzyme activities and fermentation characteristic of Chinese wildrye by mixed ruminal microorganisms in vitro