Зміни в вітамінній ланці антиоксидантної системи корів різних типів вищої нервової діяльності

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The article presents the results of the studying the content of some vitamins in blood serum of cows with different types of higher nervous activity depending on the season. The purpose of the study was to determine the influence of the typological features of the nervous system on the content of separate vitamins in blood serum of cows depending on the season. The experiment was carried out on the basis of the farm «Kolos» village Borodianka, Kyiv region on clinically healthy cows of Ukrainian black-and-white dairy breed of 2–3rd lactation. On the basis of the investigation the conditioned reflex activity, 4 experimental groups of animals were formed with 4 most typical representatives of the identified types of higher nervous activity in each: 1st group – strong balanced mobile type, 2nd group – strong balanced inert type, 3rd group – strong unbalanced type, 4th group – weak type. The research material was blood serum, in which the content of vitamins A, E and C was determined by express method via liquid chromatography. The conducted investigation of ascorbic acid, retinol and tocopherol content in blood serum of cows with different types of higher nervous activity in winter and summer periods shown that its content is significantly dependent on the season. In particular, the content of ascorbic acid in blood serum of cows with different types of higher nervous activity in the winter season was lower by 22–27% in compare with its meaning in the summer season. It should be noted that the largest difference in content of vitamin C in blood serum depending on the season was found in animals of strong balanced inert and weak types of higher nervous activity (by 27.4%, P < 0.001 and 24.0%, P < 0.001 respectively). While in animals of strong balanced mobile and strong unbalanced types of higher nervous activity the content of vitamin C in blood serum was lower by 23.2% (P < 0.001) and 21.7% (P < 0.001), respectively. The content of fat-soluble vitamins in blood serum of cows with different types of higher nervous activity is also largely dependent on the season. Thus, the content of tocopherol was lower in the winter season by 35.8–41.6% (P < 0.001) depending on the type of higher nervous activity. And the retinol content was lower by 49.2–55.3% (P FU=3.0; P FU = 3.0; P < 0.05. However, the main properties of cortical processes did not have a significant influence on the content of retinol in blood serum – F = 2.8 < FU = 3.0; P = 0.06. The season has a significant influence on the content of the above mentioned vitamins – F = 126–348 > FU = 4.3; P < 0.001, which is obviously due to the level of supply the animal’s body with vitamins during different seasons. It should be noted that there is no relationship between the sources of variation (type of higher nervous activity and season), which obviously testifies to the absence of influence of the seasons on the main features of cortical processes (F = 0.37–1.64 < FU = 3.0; P = 0.208–0.775). Thus, the influence of the main features of cortical processes on the content of ascorbic acid, retinol and tocopherol in blood serum of cows is found. In animals of weak type of higher nervous activity the vitamin content in blood serum is lower than in animals of strong types. The lower content of ascorbic acid, retinol and tocopherol in blood serum of cows in the winter season, regardless the type of higher nervous activity, has been established.