Experiment 1, Acid insoluble ash (AIA) was applied in the determination of voluntary feed intake (VFI) of IMWCGs in oestrus season and the nutrients of grass were analyzed to determine the nutrients intake.

• 试验一 通过酸不溶灰分法(AIA)对内蒙古白绒山羊发情季节的放牧采食量及牧草中主要营养成分进行测定,确定其营养物质摄入量。