The breeding potential of imported Yorkshire breed boars has been estimated in terms of parents performance (fathers and mothers), which is at the level of: the average daily weight gain - 1107 and 974 g, lean meat content in body - 61.6 and 61.4%, mother’s multiple pregnancy - 16.3 animals, the number of technological piglets on the 5 day - 13.7 animals, and for gilts - 1105 and 974 g, 61.7 and 61.5 %, 18 animals, and 15 animals, respectively. The average index of breeding value of boars and gilts made 118.0 and 110.8 points. The indices of fathers and mothers for boars made 120.7 and 100.4 points, respectively. Multiple pregnancy of sows averaged 11.1 piglets per farrowing, size and weight of litter at weaning made 10.7 animals and 96 kg.