Estrous Synchronization in Beef Cattle for Artificial Insemination with Frozen Semen1

บทคัดย่อ

In the latter part of the last decade, attempts were made to bring many animals into heat during a short period of time for convenience in artificial insemination. It is obvious that if all the animals could be inseminated during a short period of a few days rather a month, the task of grtting the animals inseminated would be much simpler. The attempt to get the animals to come into estrus at one time is referred to as estrous synchronization.