The role of the main characteristics of cortical processes in the regulation of exchanges of Cuprum

Abstract

Cortical mechanisms of regulation of the content of Cuprum in the blood of cows are presented in the article. Experiments were carried out on cows of Ukrainian black-and-rumped breed of second-third lactation period of different types of higher nervous activity. The conducted researches have established that the content of Cuprum in blood of cows of strong types of higher nervous activity does not differ significantly. The content of this trace element in the blood of cows of a strong, balanced, mobile type of higher nervous activity is 12.81–13.35 μmol/dm3. In the blood of weak cows, Cuprum content is 12.22 ± 0.37 μmol/dm3, which is significantly lower by 8.0% (P < 0.05) and 8.5% (P < 0.05) than the indicators of strong animals balanced, mobile and strong balanced inert type of higher nervous activity. It is established that the strength and balance of cortical processes have the same significant effect on the content of Cuprum in the blood of cows – ղ²ᵪ = 0.21 (P < 0.051). Then, as the effect of the motility of the cortical processes on the content of Cuprumum in the blood is unreliable – ղ²ᵪ = 0.06. The conducted regression analysis shows that the balance and mobility of cortical processes are not interrelated with the content of Cuprum in the blood of cows (b = 0.31–0.38). Then, as with the reduction of the strength of the cortical processes per unit, the content of Cuprum in the blood of cows significantly changes in the same direction by 0.53 μmol/dm3 (P < 0.05). The determination coefficient of the strength of the cortical processes and the content of Cuprum in the blood of cows is – 0.258 (P < 0.05), and, consequently, up to 26% of variations in the content of Cuprum in the blood of cows are due to the variability of the strength of the cortical processes. The correlation analysis of the connection of the content of Cuprum in the blood of cows with the main indicators of cortical processes has shown that there is no correlation between the equilibrium and the mobility of the cortical processes with the metal content. Only the tendency for direct correlation connections of the characteristics of cortical processes with the content of Cuprum in blood of cows is established – r = 0.31–0.39. Then, as the strength of cortical processes is significantly correlated with the content of Cuprum in the blood of cows (r = 0.51; P < 0.05). Consequently, the content of Cuprum in the blood of cows of high types of higher nervous activity depends on the main characteristics of cortical processes.