Postpartum heat
- 网络产后发热;产后发情
Postpartum heat-
The heat performance , heat Location and heat time in each day in the free stall barn system and the tethering system were observed on the Luoyang dairy cow farm from 1991 to 1994 , and the pregnancy rate and the time of postpartum heat were calculated .
1991～1994年在洛阳市奶牛场连续观察散养与栓系饲养体制下奶牛的发情表现、发情地点及每日的发情时间分布，统计每月的受胎率和奶牛的产后首次配种时间。
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