Abstract
It has been established that the breeding stock of swine on the farm complex is competed with the purebred Yorkshire animals, crossbreeds (Yorkshire × Landrace), for insemination of which the sperm production of boars of the Yorkshire, Landrace, Duroc breeds is used. The average fertilization rate of sows in the herd was 83.6%, including the combinations: Y × Y – 84.3%, Y × L – 84.6, YL × Y – 82.9 and YL × D – 81.2%. The highest prolificacy rate (12.43 heads) and the greatest number of piglets by the weaning time (10.81 heads) was in purebred sows of the Yorkshire breed when crossed with boars of the Landrace breed. The greatest weight of the litter at weaning (82.4 kg) and the safety rate of suckling piglets (92%) were in the crossbred (Yorkshire × Landrace) sows when crossed with the Duroc.
Published Version
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