Breeding the mare with frozen semen

Summary Breeding with frozen semen has become more commonplace. For a successful outcome, it is important to select fertile mares and to use quality frozen semen. The method/timing of insemination will be determined primarily by the number of semen doses available per cycle. Direct insemination of semen straws is preferred as this technique results in less loss of spermatozoa in insemination equipment. Ovulatory agents are crucial to help with timing of ovulation with respect to insemination. A post breeding examination should be performed to confirm ovulation and to examine the mare for possible complications such as post mating induced endometritis. With attention to details, frozen semen can be used with very good results.