The influence of inbreeding of different degrees on the live weight of swine and their own productivity

Abstract

The article deals with the problem of inbreeding in pig breeding, in particular when breeding pigs not numerous, local breed. A positive effect of inbreeding on the live weight of pigs during their cultivation has been established. The highest live weight with weaning at the age of 45 days had mumps with the lowest coefficient of inbreeding (0,78–1,56 %), but in the process of animal growth, especially from the age of 6 months, the trend is changing and the largest live weight was of mumps with a higher coefficient of inbreeding (6,24–11,7 %). The positive influence of inbreeding of moderate and distant degrees is also noted in terms of the own productivity of the pigs. It was proved that with the increase in the coefficient of inbreeding from 1,56 % to 11,7 %, the age of reaching a live weight of 100 kg decreased by 11,4 days (P>0,95), and the thickness of the bacon, measured in vivo, by 2,7 mm. On the basis of which a general conclusion is drawn on the possibility of a related selection of parental pairs in Myrhorod breed of pigs for the purpose of obtaining descendants, the complex inbreeding coefficient of which is not higher than 11,7 %.