Studies on the effect of NH_4 HCO_3 treatment on roughage degradation and rumen microbial synthesis

摘要

Corn stover and rice straw are two main kinds of roughages fed to ruminants in China. The present research was carried out to study the effects of NH_4HCO_3 treatment on their degradation estimated with nylon bag method and the microbial synthesis measured with rumen simulation technique (RST). 10% NH_4HCO_3 and 40% water were added to corn stover and rice straw on DM basis, and heated at 65°C for 7 hours. Four roughage samples, corn stover (CS), treated corn stover (TCS), rice straw (RS) and treated rice straw (TRS), were prepared.