ECONOMIC EFFICIENCY OF NEW WAYS AND METHODS OF SELECTION OF REPAIR PIGS AND SOWS WHEN BREEDING FOR PERFECT

Abstract

Testing of the replacement gilts on psychological stress resistance, and choosing of the stress resistant individuals for reproduction purposes, makes it possible to increase the rate of the average multiparous pregnancy in sows by 1.3 heads, and to raise the proportion of tested sows transferred to the main herd by 13.1 p.p. This ensures the additional income of 436.4 rubles or 167.8 c.u. for each gilt selected for replacement. Exclusion from the herd in the process of selection of sows-carriers of the EPORСС genotype allows to get additional income from the sale of fattened young animals received from 1 sow per year by 49.6 rubles or 19.1 c.u. in comparison with the absence of such selection. When a complex of DNA markers MUC4 (in 7) and EPOR was used for selection of polymorphism, an increase in its effectiveness was stated with an increase in the proportion of positive alleles MUC4 (in 7)С and EPORТ in the genotypes of the selected animals. When breeding for multiparous pregnancies, the effectiveness of use was defied, against the background of a preliminary selection by the nature of polymorphism of the complex of DNA markers MUC4 (in 7) and EPOR, an additional assessment of sows by the values of the SRMHm parameter. The greatest economic effect, which amounted to 104.2 rubles or 40.1 c.u, for 1 sow of the next generation per year, was established using preliminary selection of carriers in the genotype of 50% or more alleles MUC4 (in 7) C and EPORT with additional selection of 30% of the best sows according to the value of SRMHm.