ROLE OF THE AUTONOMIC NERVOUS SYSTEM IN THE REGULATION OF PHOSPHORUS AND CALCIUM METABOLISM IN COWS

Abstract

The leading role in the mobilization of the organism adaptive capabilities is played by neuro- humoral mechanisms, primarily the activity of the central nervous system. The full-value mineral nutrition of cattle depends on the provision of animals with macronutrients, which are included in the structure of many enzymes or are their activators, taking a leading role in redox reactions. The studies were carried out on cows of the Ukrainian black-and-white breed of 2-3rd lactation. By the results of the study of tone of the autonomic nervous system, 3 research groups were formed: І – normotonic , ІІ – vagotonic , ІІІ – sympathicotonic cows. Blood from cattle was obtained twice a year in summer and winter. Whole blood was stabilized with heparin, blood serum was obtained by sedimentation method, and blood cells – by centrifugation of heparinized blood, plasma collection and after triple washing of cells in cold isotonic solution, followed by centrifugation. The tone of the autonomic nervous system in cows in summer is inversely related to the content of phosphorus in whole blood (r = -0.73; P<0.05) and blood cells (r = -0.87; P< 0.001). However, in blood serum these relationships are unreliable both in summer and in winter ( r= – 0 . ,02–0 . 24). In winter, the tone of the autonomic nervous system in cows is inversely reliable associated only with the phosphorus content in whole blood (r=-0.81; P <0.01). Unlike the tone of the autonomic nervous system, the season has a significant effect on the calcium content in whole blood (F = 8.94> FU = 8 .41; P<0.01), while the content of this element in the serum and blood cells of cows did not depend from the season. So, the tone of the autonomic nervous system and the season affect the content of calcium and phosphorus in the blood of cows. Keywords: higher nervous activity, types of higher nervous activity, nervous processes , autonomic nervous activity,