Performance of foreign selection boars and their use for commercial crossbreeding
It was determined in the course of studies on the boar’s of leading breeding centers that the best reproductive traits were shown by sires of Landrace breed of German selection. In terms of own productivity they conceded the control group boars of Yorkshire breed. It was determined in the analysis of reproductive traits of sows that the highest rate of multiple pregnancy among experimental groups was shown by sows of Belarusian meat breed - 11.3 animals per litter. In terms of milk yield sows of Yorkshire breed inseminated by Duroc boars surpasses females of the control group by 9.8 kg or 20.4 % (P ≤ 0,001). Piglets of Yorkshire breed conceded their coevals obtained from combinations of BM × Y and (BM × Y) × D by litter weight by 24.6 and 26.6 % (P ≤ 0,001), and the weight of one piglet-by 22.7 and 24 % (P ≤ 0,001), respectively. The complex index of reproductive traits of Belarusian meat breed sows was the best among the experimental groups and made 92.7 points, that is by 8 points higher than in the control group of sows.