Breeding results of domestic and imported pigs

Pig breeding is currently one of the most developing branches of animal husbandry in Russia. At large livestock complexes, preference is given to imported pig breeds and their hybridization. At the same time, the conservation and rational use of domestic pig breeds is of great practical and scientific interest. The scientific article presents the productive indicators of the Liven breed of pigs, assesses the genetic determination in a herd of large white breed and Landrace pigs of Danish origin. The research was carried out in the Oryol and Kaluga regions. It was determined that in recent years, due to selection in the Liven breed of pigs, the development of meat qualities and body length (by 3.1 cm) was observed. Pigs of Danish origin significantly differed in meat quality and growth rate from the Liven breed of pigs. The breeding value index in imported pigs was determined by genetic factors on average by 50-60%, by external factors - by 40-50%. This gave great opportunities both in the modernization of the selection and in the improvement of the conditions of feeding and keeping. Throughout the livestock, a normal distribution was traced in terms of differences in the breeding value of fathers and the breeding value of mothers - from -41 to +61. According to the results of the research, it was proposed to use Danish Landrace and White Danish breed in purebred breeding programs to further increase the meat productivity of pigs when breeding on large pig-breeding complexes. It is advisable to use the local livestock of Livensky pigs to obtain pork on farms, not excluding further introductory crossing with imported boars in order to increase the intensity of growth and meat productivity.