Abstract
In this study, the elemental composition of the hair of Holstein cows (n=50) from two different regions of Russia (Vologda and Orenburg regions) was studied. The contents of chemical elements in wool of the animals was determined using ICP-AES and ICP-MS. According to the results obtained, there were significant differences in the content of practically all elements (with the exception of B and Cu) in the wool of cows when comparing animals from Vologda and Orenburg. The study of the mineral composition of cow hair has shown that territorial features are the determining factor of elemental homeostasis and clearly demonstrate the need to take into account regional features when developing recommendations for correcting the elemental status of animals.
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