Assessment of the influence of boars of different breeding on the indicators of sows and first generation mixeds

Abstract

Relevance. Hybridization of pigs is one of the main factors in the production of high-quality pork, since such animals combine the genotype of the grandparent and parent breeds and, due to the effect of heterosis, have a high growth rate, improved meat qualities compared to purebred ones. The paper presents an assessment of the reproductive qualities of large white sows and the productive qualities of young animals obtained as a result of industrial two-pedigree crossing.Methods. To implement the scientific and economic experience, 3 groups of sows of pairs-analogues of the Large White breed from the Hypor company (KB Hypor) were formed. Sows of the 1st group were crossed with Landrace boars from PIC (Landrace Pic), 2nd – with Landrace boars from Genesus Genetics (Landrace Genesus), 3rd – with Landrace boars from Hypor (Landrace Hypor).Results. According to the results of the research, it was found that the multiple pregnancy of sows in groups 1st and 2nd was higher by 7.7%, and the number of stillborn piglets, on the contrary, was lower by 0.6 heads than in group 3. The weight of the nest of piglets at birth in the 1st and 2nd experimental groups was higher by 9.9 and 6.1%, respectively, in comparison with analogues from the 3rd group. In the hybrid young animals obtained during the experiment, an increase in the absolute, average daily and relative gain in live weight was noted.