BLOOD FATTY ACID COMPOSITION IN COWS DEPENDING ON THE TYPE OF AUTONOMIC REGULATION IN SUMMER PERIOD

Coordination of physiological activity and intensity of metabolism in various organs and tissues of a productive animal depending on environmental conditions and own needs is provided by the regulatory activity of the corresponding nerve centers. However, the features of the autonomic regulation of the nervous system in this matter can have a significant impact not only on the physiological activity of animals but also on their productivity. Therefore, the question of studying the influence of autonomic regulation on the animal body in general and the interaction of the autonomic system and lipid metabolism is quite relevant. Groups of animals were formed by determining the state of the cardiovascular system according to the Baevskyi method. Blood plasma was used for the study, lipid extraction was performed by the Folch method. Fatty acid analysis was performed on a Trace GC Ultra gas chromatograph (USA) with a flame ionization detector. Studies have shown that the relative content of saturated fatty acids in blood of normotonics was the highest compared with other groups: sympathotonics – by 1.9%; vagotonics – 0.48%. Regarding the concentration of saturated fatty acids in sympathotonics, it should be noted that the content of stearic acid was the highest (18.07 ± 0.01; P < 0.001), and saturated fatty acids from C6 to C16 were characterized by the lowest values (P < 0.01–0.05) in comparison with other groups. The total content of unsaturated fatty acids in blood plasma of sympathotonics and vagotonics was 1.19% and 0.49% higher, respectively, compared with normotonics. Quite interesting is the fact that sympathotonics were characterized by the highest content of polyunsaturated fatty acids, the content of which decreased in the range C18:2n6 > C20:4n6 > C18:3n3 > C22:6n3 > C22:5n3, a similar sequence we observed in other groups, although the relative concentration of acids could fluctuate. Normotonics were characterized by the highest levels of some polyunsaturated fatty acids (C18:3n3, C22:5n3, and C22:6n3; P < 0.05–0.01), while levels of some unsaturated fatty acids (C18:1n9 and C20:3n6) were the lowest. Thus, the type of nervous activity has a significant effect on the ratio of fatty acids in blood plasma and autonomic regulation affects the metabolic processes in the body of cows