[Experiments to increase the conception rate in cows with disordered ovulation and spontaneous estrus].

Studied was the time period for the setting in of an ovulation that did not really take place, and the follicular cysts in cows following calving with regard to the effectiveness of the preparation Gn-RH vet. "Berlin-Chemie" in the treatment of the diseased animals. Attempts were made to raise the conception rate of cows manifesting delayed ovulation (with estral and postestral metrorrhagia). It was found that the preparation was effective in the treatment of cows with follicular cysts when applied at the rate of 1 mg in i/m injections. The therapeutic result was 75.4 percent. When introduced at 0.5 mg some 60 min prior to insemination (that is to be performed before the appearance, resp., the presence of estral and post-estral bleeding) the preparation was shown to induce ovulation. It also prevented hemorrhages, and raised the conception rate at first insemination.