From

Effect of Saccharomyces cerevisiae on Rumen Fermentation Characteristics, Nutrient Degradation and Cellulase Activity of Steers Fed Diets with Different Concentrate to Forage Ratios

Gengzhi Ding, Ying Chang, Zhenming Zhou, Liping Ren, Qingxiang Meng

World Journal of Agricultural Research. 2014, 2(6), 303-308 doi:10.12691/wjar-2-6-10