搜索结果: 1-1 共查到“工学 artificial insemination”相关记录1条 . 查询时间(0.171 秒)
Use of Bovine Somatotropin in Lactating Dairy Cows Receiving Timed Artificial Insemination
timed artificial insemination bovine somatotropin lactating cows
2008/6/27
Objectives of the research were to examine the effect of bovine somatotropin (bST) on pregnancy rates to a timed artificial insemination protocol and to test a re-synchronization system with two conse...