Reproductive traits of sows of Yorkshire and Belarusian meat breeds at crossing with Landrace and Duroc breeds of boars of German selection

Abstract

In the course of research of reproductive traits it was determined that the highest rate of multiple pregnancy of experimental groups was peculiar of sow of Belarusian meat breed - 11.25 animals per farrowing. On meatiness sows of Yorkshire breed inseminated by boars of Duroc breed surpassed sows of control group by 9,82 kg, or 20,4 %. In terms of litter weight and weight of one piglet at weaning on 29^th day sows of combinations of BM × Y and (BM × Y) × D surpassed coevals of the control group: on litter weigh - by 23,8 and 22,1 %, and on weight of one piglet - by 23,5 and 23,1 %. The complex index of reproductive traits of sows of Belarusian meat breed was the best among the other groups and made 92,6 points, which is 4 points higher than with sows of the control group.