Influence of the pendant of the manufacturer of the breed Landras on the reproductive quality of sows

The reproductive qualities of the boar of the landrace breed No. 22387, brought from the «Verkhnekhavsky» breeding and hybrid center of the Voronezh region, were studied in the «Pashkov S.I.» farm. With two breeding crosses, the indicators of reproductive qualities are higher than those with three breeds, and the chemical composition of milk is less fat and less protein-treated. Thus, the use of two-and three-breed hybridization should be carried out with a mandatory assessment of the compatibility of the rocks, to show the effect of heterosis.