Abstract
The study presents the results of determining the type of stress resistance of dairy cows by the level of cortisol in the blood in the state of «conditional rest». The influence of regrouping of animals on the concentration of cortisol hormone in blood was also studied. It is revealed that regrouping of animals contributes to the increase of cortisol concentration in blood. It is established that high level of cortisol in the blood of dairy breeds of cattle affects the decrease in the level of milk productivity
Keywords
References
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