THE IMPROVEMENT OF THE METHODS OF ASSESSING THE BREED- ING VALUE OF BOARS-SIRES IN THE PEDIGREE STOCK
The article assesses the breeding value of boar-sires of the big white pig breed according to daughters’ productive characters taking into account mothers’ productivity. This method is designed to test sires in homo- and heterogenous selection variants by sows’ productivity. The results prove the expediency of using neutral type sires for improving the lines and types within one breed; however, equalizing аnd dominance types are ex- pedient to use in crossing and hybridization for increasing the manifestation of the heterosis effect according to the productive characters.