In the period of data collection,parameters about ruminal fermentation(pH, NH3-N, VFA), degradability of straw and cottonseed, and digestibity of dietary nutrients (DM,OM, CP, EE, ADF) were determined.

• 正试期间测定有关瘤胃发酵参数(pH、NH_3-N、VFA)、稻草和棉籽的降解率及日粮养分(DM、OM、CP、EE、ADF)的消化率。