USE OF BIORELIN DRUG FOR REGULATION OF REPRODUCTIVE FUNCTION IN REPLACEMTNT YOUNG PIGS

Abstract

The aim of the work was to identify the effect of the hormonal Biorelin drug on the formation of reproductive function in replacement young pigs and their further productivity. Biorelin (alarelin acetate) is a hormonal drug for regulating reproductive function. It has both follicle-stimulating and lutenizing activity, that is, it contributes to the release of endogenous gonadotropic hormones by the pituitary gland and does not have interspecific specificity. From the 4th to the 6th month, the average daily weight gain of animals was 550-600g. After the replacement young pigs reached the age of 6,5-7,0 months (80-90 kg) in order to induce (excite) the reproductive cycles, the experimental group of animals was stimulated with the hormonal Biorelin drug at a dose of 10 μg (2 ml). As a result of the studies, it was found that the use of the hormonal Biorelin drug in the early stages of the sexual function development in replacement young pigs had a positive effect on their coming in heat. So, in experimental animals for 10 days this index was 63,3 against 43,3% in the control; for 21 days it was 90,0 versus 66,6%, which is higher by 20,0 and 23,4%, respectively. In addition, in the control group for two reproductive cycles (42 days), four young pigs (13,4%) did not come in heat at all and were culled, while in the experimental group, the coming in heat was 100%. By large-fruited piglets and survival rate at 30 days of age, no significant differences in groups were noted. To improve the reproductive quality of replacement young pigs reared in minifarm conditions, it is necessary to use the hormonal Biorelin drug at a dose of 10 μg (2 ml) 30-45 days before the physiological maturity of an animal.