[Outlook for the programmed insemination of sheep in the anestrual season]

Studied were certain methods for programming the estrus and fixing the optimal term for the insemination of sheep. A record was kept of the changes taking place in the genital apparatus in various periods of time following the use of hormonal preparations during the anestral period. The fertility of sheep was also taken into consideration both after the first treatment with serum gonadotropin and after the two-fold programmed insemination at a 16-day interval with regard to the total fertility. It was shown that the optimal time for programmed insemination of sheep was between the 36th and the 56th hour after the three-fold injection with Prolosan at 12-hour intervals so far as periods other than the breeding season were concerned. Fertility at two-fold injection rated at 121 per cent, and conception--at 78.2 per cent.