母牛的发情周期平均为21天。
母牛的发情周期平均为21天。
产后母牛在第一发情周期中,卵巢卵泡的生长发育以3或4卵泡发育波为主。
The follicular waves of postpartum heifers is made of 3 ~ 4 waves in the first estrous cycle.
产后母牛在第一发情周期中,卵巢卵泡的生长发育以3或4卵泡发育波为主。
The follicular waves of postpartum heifers is made of 3 ~ 4 waves in the first estrous cycle.
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