Model genetic profiles of pigs of mother breeds on genes - productivity markers

Abstract

Currently, development of molecular genetics and biology allows for genomic analysis and selection directly at the DNA level (marker-dependent selection). The aim of the research was to develop model genetic profiles for marker genes of quantitative traits of productivity of pigs of planned maternal breeds used in pig breeding. Such breeds in the Republic of Belarus are as follows: Belarusian large white, Belarusian black and white and Yorkshire. The studies were carried out at the agricultural branch of Zadneprovsky SGC, Orshansky Plant of Bread Products, JSC, Zarechye SGC, Zapadny SGC with populations of purebred animals of Belarusian Large White, Belarusian Black and White and Belarusian plant type of Yorkshire pigs during 2002-2018. Genetic testing was carried out with sows, boars and finishing pigs of maternal breeds. As a starting material, tissue samples from the auricle of pigs were used with DNA isolated and optimized for the analysis of gene polymorphism using PCR - RFLP method in the laboratories of molecular biotechnology and DNA testing (Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding) and animal genetics (Institute of Genetics and Cytology of the National Academy of Sciences of Belarus). As a result of studies based on the established polymorphism, model genetic profiles of maternal breeds of pigs were developed for marker genes of quantitative traits of productivity. The maximum achieved level of the preferred genotype for each marker gene among the three maternal breeds served as a model profile for the evaluated breeds (breeding young animals). For breeds with an established high level of marker gene polymorphism and productivity, a model profile has been developed that exceeds the achieved indicator by 8-10 p.p.