УЛУЧШЕНИЕ ВОСПРОИЗВОДИТЕЛЬНЫХ КАЧЕСТВ КРУПНОГО РОГАТОГО СКОТА БИОПРЕПАРАТОМ PREVENTION-N-B-S

Abstract

Productive insemination of cows against the background of heat detection or synchronization of the estrous cycle within a relatively short time after the previous calving is the main factor that determines the productivity and profitability of dairy cattle breeding. Many obstetric and gynecological diseases often occur in the first 2 months of lactation. Postpartum obstetric and gynecological diseases of cows impair their reproductive qualities, which leads to prolonged anestrus, decreased fertility, and depletion of the body. Inflammatory processes of the female reproductive organs are accompanied by enhanced stress. The research aims to prevent diseases of the postpartum period and realize the potential of the reproductive qualities of cows by activating the nonspecific resistance of the organism with the Prevention-N-B-S biological preparation. Based on the performed studies, a method for the prevention of obstetric-gynecological diseases of the postpartum period and an increase in the reproductive function of cows by increasing the nonspecific resistance of the body with the biological Prevention-N-B-S is proposed. The newly designed biological preparation was for the first time used in cows of the 2nd experimental group intramuscularly at a dose of 10 ml 35-30, 15-10, and 10-5 days before the expected calving time, and the animals of the 1st experimental group were injected with Dorogov's antiseptic stimulator of fraction 2 in combination with eleovitum in a ratio of 1:9 60 days before the scheduled calving dates. It was found that in cows of the 2nd trial group (28.8±0.56 days), the first estrus began 5.8 and 14.4 days earlier than in the mates of the 1st trial group (34.6±0.93 days) and control (43.2±1.64 days) groups. There was a decrease in the conception rate in cows of the 1st (1.8±0.24) and 2nd (1.4±0.36) trial groups, in comparison with the control (2.6±0.26). The service period in the 1st (64.6±1.62 days) and 2nd (57.8±1.50 days) experimental groups decreased compared to the control group (89.2±3.02 days). In the first sexual estrus in the control, 1st and 2nd experimental groups, 2, 4, and 6 cows have become fertile, respectively. The use of biological in the critical periods of cow pregnancy reduced the risks of uterine subinvolution, endometritis, and mastitis in the postpartum period, and also increased the reproductive qualities of cows. The most expressed corresponding effect was obtained when using the biological preparation Prevention-N-B-S.