RESULTS OF INTRODUCTORY CROSSBREEDINGOF BELARUSIAN BLACK-AND-WHITE AND BERKSHIRE PIGS

Abstract

The article presents the results of using the Berkshire breed in the introductory crossbreeding with the Belarusian Black-and-White breed. The resulting two-breed pedigree pigs of new genotypes were evaluated in terms of their own productivity and underwent genetic testing for 12 STR-loci. It has been established that the use of the Berkshire breed reduces the prolificacy of the Belarusian Black-and-White sows byheads. At the same time, the growth rate and viability of crossbred suckling piglets were high. Two-breed replacement young animals and their age-mates of the Belarusian Black-and-White breed had the same level of self-development. The ancestors of four lines in the Belarusian Black-and-White breed were selected from the boars tested. A microsatellite analysis of purebred and crossbred animals was performed according to lineage affiliation. Private alleles were determined in animals of the created lines Azart 1796 and Abrus 239.