Some of the cows calved too early, and Tom broke his leg badly when he and some of the men were out trying to rescue the little beasts from the terrible cold and waist-deep snows. 上次,汤姆和一些人在试图把一些小动物从可怕的寒冷和齐腰深的雪里救出来的时候,他把腿弄断了,很严重。
The best beef is obtained from steers and heifers ( female cows that have not calved). 最好的牛肉来自食用牛和小母牛。
The Effect on Superovulation and Collecting Embryo of American-Brown Bovine Calved by Embryo Transfer 胚胎移植产美国褐牛超排、采卵效果观察
Having recently calved and therefore able to give milk. 因怀孕而可以提供牛奶的。
Embryos after super ovulation were transferred to 3 donee, the conception rate at 90 d of pregnant was 33.33%, but none was calved. 经超排所获4枚可用鲜胚分别移植3头受体,90d检查时的妊娠率为33.33%,但最终未产犊。