Dependence of the content of magnia in cows blood on the time of the year and the tone of the autonomous nervous system.
DOI:
https://doi.org/10.31548/ujvs2019.01.038Abstract
The results of studies of the influence of the vegetative nervous system tone on the
magnesium content in the blood of cows in summer and winter are presented. The aim of the work
was to establish the dependence of magnesium in the blood of cows on the season and the tone of
the vegetative nervous system. The tone of the vegetative nervous system of cows was determined us-
ing trigeminovagalnogo test. According to the obtained results, the animal was attributed to normo,
sympathic or vagotonic. According to the results of the study of the autonomic-nervous system tone, 3
experimental groups were formed, 4 animals each. The first group consisted of normotonic animals, the
second - vagotonics, the third - sympathicotones. The material for the study was the blood samples of
animals obtained from the jugular vein. Blood sampling was performed twice, in summer and winter. In
whole blood, magnesium content was determined by flame atomic absorption spectrophotometry. The
degree of excitability of the sympathetic and parasympathetic nervous system, according to the results
of the trigeminovagal reflex in cows, does not significantly limit the magnesium content in their blood,
regardless of the season. Then, as in normutonic animals, the vegetative status reliably influences the
metal content in the blood - η2х = 0.26 (p <0.05) in summer, while in winter this effect is not significant.
The study of the tone of the autonomic nervous system using trigeminovagalnogo test allows to reliably
determine the belonging of cows in accordance with the tone of the autonomic nervous system. Our data
may indicate the absence of vegetative regulatory mechanisms regulating the content of magnesium in
the blood of cows.
Keywords: cows, higher nervous system type, autonomic nervous system tone, trigeminovagal test,
Magnesium
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