Influence of Repeated Regrouping on Productivity and Physiological Parameters of Dairy Cows
Bekseitov T.K. Kainidenov N.N. Akhazhanov E.K. Tileubek U.N. Beketov S.V. Syrovatsky M.V.
May-Jun, 2025Unique Scientific Publishers
International Journal of Veterinary Science
2025#14Issue 3613 - 618 pp.
The effect of social stress caused by the repeated regrouping of cows of different breeds (Holstein, red steppe, and Simmental) on milk productivity and quality indicators (milk yield, fat, protein) and physiological parameters: hormones (cortisol and adrenaline) and general blood parameters (number of leukocytes, lymphocytes, red blood cells, and hemoglobin) were studied. It was found that the effect of social stress caused by repeated regrouping of cows-in different breeds is heterogeneous. According to the set of physiological stress biomarkers, Holstein cows were the most susceptible, manifested in their increased adrenaline levels by 48.87% and hemoglobin by 15.37%. Also, the Simmental breed of cows characterized a significant increase in adrenaline concentration (an increase of 73.53%). In comparison, relatively stable animals of the red steppe breed can be considered (excess of cortisol by 18.23%). At the same time, the regrouping of cows did not affect changes in productivity and milk quality, and the detected deviations of physiological indicators were within the norm. The results indicate that social stress from regrouping affects breeds differently. Holstein cows were most susceptible, showing increased adrenaline and hemoglobin levels. Simmental cows also had a significant adrenaline rise, while Red Steppe cows were relatively stable with minor cortisol changes. Regrouping did not impact productivity (milk yield) or milk quality (fat, protein), and physiological changes remained within normal limits.
Adrenaline , Cattle , Cortisol , Hemoglobin , Milk productivity , Social stress
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Research Institute of Agroinnovation and Biotechnology, NAO Toraigyrov University, Pavlodar, Kazakhstan
Moscow State Academy of Veterinary Medicine and Biotechnology named after K.I. Skryabin, Russian Federation
Vavilov Institute of General Genetics, Russian Academy of Sciences, Russian Federation
Research Institute of Agroinnovation and Biotechnology
Moscow State Academy of Veterinary Medicine and Biotechnology named after K.I. Skryabin
Vavilov Institute of General Genetics
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