DYNAMICS OF RESISTANCE FACTORS IN PIGS OF DIFFERENT GENOTYPES IN POSTSTATE ONTOGENESIS
The paper presents data on age-related characteristics of the formation and formation of resistance factors in purebred and cross-breed pigs bred in the Middle Volga region. It has been established that cross-breeding pigs obtained from two pedigree sows (crossbreeding of pure-bred pigs of large white breed with large white breed of Estonian type) seeded by boars of Duroc breed have high rates of natural resistance factors.