Makovska N. Relative variability of nonspecific resistance and economicallyuseful traits in cattle and pigs

Thesis dissertation is concerned with the research of the common factors in terms of development of nonspecific resistance as well as its correlation with economically useful traits of cattle and pigs. There have been developed methodological aspects of individual animal-stock-evaluation on the baisis of diagnostics, which are beneficial in notion as to topological features during the early development. The has been submitted an integrated approach as to an identification of nonspecific resistane among farm livestock. First approbated on the cattle and swine was the cytobiophysical method of organism viability definition. There have been defined the understandable and factual interior tests (evaluating resilience, systemic reaction and recalcitrance), which provide insight into the “genotype- environment” correlation on an individual level, consequently allowing to outline the evidence of nonspecific resistance and its reference to economically useful traits of cattle and pigs. There has been indicated the direct correlation between calves body weight and the level of nonspecific resistance at the age of 2 months, which is proved by relative variability this index and white cells phagocyte activity (r = +0,38 ± 0,161; Р < 0,05). A statistically significant (Р < 0,05) influence of calves stress state on their body weight at the age of 2 months (ɳх2 = 0,19 ± 0,060) was identified as well as impact of immunoresponsiveness on the calves body weight at the age of 6 months (ɳх2 = 0,34 ± 0,098). Be noted, that calves with normal stress state were marked with apparently higher body weight compared to those stress sensitive (up to 2,6 кg Р < 0,01). Stress-sensitive calves had increased age of the first insemination than the calves with normal stress state (17,0 ± 0,64 contrary to 15,3 ± 0,59; Р < 0,05). The dairy cows with the signs of asymptomatic garget undergo yield reduction (up to 6,4–7,6%), and the lowering of milk standard indicators as opposed to the healthy animals. The Large Black Pigs appear to be better stress-resistant and posess better nonspecific resistance (PA up to 2,3%, Р < 0,05; ІP up to 18,2%; Р < 0,001). The breed has better index of growers survival (up to 4,7%) during lactation than the breeding sow of the Large White Pigs (Р < 0,001).