Effects of Different Yeast Culture Media on Rumen Fermentation in vitro

The aim of this study was to test the effect of different yeast fermented liquid on the rumen fermentation in vitro. The eight different yeast fermented liquid were added to the rumen fluid of dairy goats with substrate. And the group only contained the substrate was as control. The effects of 8 yeast fermented liquid on the rumen fermentation were analyzed by measuring the p H of culture fluid, concentration of NH3-N, BCP and VFA in vitro. The results showed that XR4, SC18 and YJ2 reduced the concentration of NH3-N(P0.05) and SC18, YN7 and YJ2 increased the rumen BCP concentrations significantly(P 0.05). YJ2 and YL5 increased the total content of VFA significantly and stabilized the p H of culture fluid. In conclusion SC18, YJ2 and YN7 may promote the rumen fermentation significantly.