Analysis of the Effect of Ashdan Yak Improving Gannan Yak
In order to effectively improve the degradation of Gannan yak breeds and the decline in production performance,this experiment used Ashdan yak as the male parent to improve Gannan yak.From 2021-2023,the reproductive performance statistics showed that under the same feeding conditions,the average reproductive survival rate of Ashdan yak improved Gannan yak offspring was 3.64 percentage points higher than that of Gannan yak,and the mortality rate was reduced by 3.85 percentage points.Ashdan yak improved Gannan yak,showing good repro-ductive performance and stable hornless performance.Ashdan yak and Gannan yak F1 generation have shown out-standing growth performance from birth.The weight of 18 month old Agan F1 male and female yaks has increased by an average of 11.24 kg and 10.73 kg compared to Gannan yaks,with a weight gain of 11.17%and 11.23%.The improved offspring have fast growth and development,good body structure,and outstanding meat production performance.
NETL
NSTL
万方数据
