控制配种与牦牛生产

Manipulating Mate and Production of Yak

通过研讨牦牛在妊娠、泌乳期间营养物质供需特点，并加以例证,说明在不改变现有饲养条件的前提下，仅靠调控配种时间，就可提高牦牛生产成绩。

The supply and demand characteristic of nutrient on yak during gestation and lacation will be studied and illustrated, and explicate that on the premise of no changing current feeding strategy, the performance of yak can be increased by only deperding on manipulating the mating time.