从不同角度分别对成母牛群和后备牛群早期选种方案的制定方法、实施原则和步骤进行了探讨。

Being worked out herd early selection plan is one of the most important tasks to dairy herd breeding .

youdao

从不同角度分别对成母牛群和后备牛群早期选种方案的制定方法、实施原则和步骤进行了探讨。

Being worked out herd early selection plan is one of the most important tasks to dairy herd breeding .

youdao