Comparison of Crossbreeding Effects between Simmental Cattle,Brown Cattle,and Xinjiang Tianshan Yak
Using synchronous estrus and artificial insemination techniques and taking Brown cattle and Sim-mental cattle as male parents,the crossbreeding was conducted in Xinjiang Tianshan yak.The results showed that the calving rate was 43.5%.Western Pianniu,Brown Pianniu,and yak had an average birth weight of 32.5kg,31kg,and 20.2kg for males and female calves.The average birth height was 72.5cm,63.7cm,and 58cm.The average birth body length was 63cm,61.3cm,and 55.6cm,the average birth chest circumference was 82cm,82.7cm,and 67.6cm,and the average birth tube circumference of 12.5cm,11.3cm,and 10.8cm,respectively.Pi-anniu had obvious advantages.
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NSTL
万方数据
