| 中文名稱 | 乳牛太早再配種造成懷孕率下降 |
|---|---|
| 英文名稱 | |
| 建立日期 | 2007/11/01 |
| 更新日期 | 2007/11/01 |
| 中文描述 | 第一次懷孕率是較低的,並且當牛先前60天有配過種隨後生小牛,每次壞孕率是較高的,然而早期再配種將會降低全面畜群的生小牛間隔.如果昂貴的精液被使用來配種,降低產後早期受孕會是重要的. |
| 英文描述 | The first service conception rate is lower, and services per conception are higher when cattle are bred before 60 days following calving, however early rebreeding will lower the overall calving interval in the herd. The lower fertility early postpartum would be important if expensive semen is used. |