Estrus synchronization of beef cows with a palpable corpus luteum using PGF2α

Abstract

There are many small herds of purebred beef cattle ranging from twenty to fifty cows. Breeders of these herds would like to produce calves by artificial insemination using semen from the well-known sires of their breeds. Most beef cattle breed associations now allow registration of calves born from artificial insemination. However, these herds are part-time endeavors, and the owners seldom have either the time or management experience necessary for artificial insemination unless the procedure can be simplified.

To test under field conditions, an artificial insemination method that would require minimal labor and management.