Methane production in 5 kinds of diets determined by IVGPT were lower than that by SF6 tracer technique and the difference was not significant except for Erect Milk vetch(P>0.

• 利用体内法(SF6示踪技术)和体外发酵产气法(IVGPT),研究不同方法测定内蒙古白绒山羊日粮的甲烷产生量和消化率的差异。