Specifically, these include (1) production, (2) conformation, (3) longevity, (4) calving ease, (5) milking speed, (6) milking temperament and (7) reproductive performance.
英
美
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具体包括:(1)产奶量;(2)遗传力构造;(3)奶牛寿命;(4)难产率;(5)挤奶速度;(6)挤奶性情和(7)繁殖性能。
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以上内容独家创作,受著作权保护,侵权必究