甘南牦牛一年一产试验

Experiment of Annual Litter Size of Gannan Yark

[目的]通过改善母牦牛妊娠期营养条件,提高甘南牦牛的繁殖率。[方法]试验组母牛白天放牧,分早晚两次每天补饲颗粒饲料1kg/头,产犊后每天挤一次奶。[结果]70%以上牦牛实现了一年一产,犊牛成活率也明显提高。[结论]通过改善母牦牛妊娠期的营养条件,减少挤奶次数,可提高甘南牦牛的繁殖率和犊牛成活率。

[Objective]To improve reproduction rate of the Gannan yak by improving the nutrition con- ditions of the female yak gestation. [Methods]The female yaks from experimental group were grazed dur ing the day, were fed supplementary feeding pellet （1 kg/head） every day in the morning and evening, then was milked once a day after calving milk. [Results]More than 70% of the yak with supplementary feeding gave birth to a yak calf per one year, and the survival rate of calf had also obviously improved. [Conclusion] The improvement of the nutritional condition of the female yak during pregnancy and reduce of the number of milking can improve reproductive rate and survival rate of the Gannan yak.