The effectiveness of using the developed estrus induction patterns in sheep

The aim of research was to study the effectiveness of the developed estrus induction patterns in sheep. The studies were carried out at OJSC “Mayak” the Rodinskiy District of the Altai Region in 2016-2017 on sheep of the West Siberian meat breed. Two experimental groups of ewes after the second lambing, with 30 animals in each group were formed by the method of analogs. Two schemes were developed and the results of ewes lambing were analyzed. In pattern I, a group of ewes, regardless of the stage of the sexual cycle, was injected intramuscularly with progestamag at a dose of 4 ml and Gabivit-Se at a dose of 8 ml per head. After 7 days, they were injected with follimag subcutaneously at a dose of 500 IU and gabivit-Se intramuscularly at a dose of 8 ml per head. Pattern II of stimulation - subcutaneous injection of follimag at a dose of 500 IU and E-selenium intramuscularly at a dose of 1.5 ml per head, also regardless of the stage of the sexual cycle. After 7 days, the sheep were injected intramuscularly with progestamag at a dose of 4 ml, surfagon at a dose of 3 ml, and E-selenium at a dose of 1.5 ml per head. It was revealed that pattern II is more effective, since it allows you to make a profit of 314.85 rubles, pattern I - 282.10 rubles per one treated ewe. When using the estrus induction pattern II, the farm can have an additional profit per one treated ewe - 1,675.77 rubles, which is 38 %. The yield of newborn lambs in experienced ewes in the first lambing is 128.3 %; in the second - 153.3; in the third - 125.5 %. In control ewes for 2016-2017 the yield of newborn lambs was 151.1 % on average. It was revealed that the business output of lambs for two years in the I experimental group of ewes was 156.7 %, in the II experimental group - 160.0 %, which is 28.8-32.1 % more than in the group of control ewes (127,9 %).