Abstract
The intensification of pig breeding, which is based on the selection of modern breeds of pigs “for meat” leads to the tension of almost all functional systems of the body and is often the cause of increased susceptibility to adverse environmental conditions and reduced resistance to diseases. Hence, the study of ways to increase the nonspecific immunity of pigs using specialized meat breeds of domestic and foreign origin is quite relevant and allows us to characterize the physiological state of the animal organism in the process of adaptation to certain environmental factors. Statistical processing of indicators of nonspecific resistance in MS Excel and biochemical blood parameters of hybrids of pigs of the following breeds: Large White × Landrace × Duroc (LW×L×D) aged 100‒130 days was carried out in order to study the immune status of piglets of the studied age, in accordance with biochemical indicators. It was found that the lysozyme activity of animals was at a fairly high level and averaged 49.32% against the average “physiological” indicator of 35.29%. The bactericidal activity of blood serum in most animals is low 24.39% against the average “physiological” index of 56.12%. A strong correlation between bactericidal and lysozyme activity has been established.
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