The blood and hair of cattle as a biosubstrates to estimate provision of minerals
The tactics and strategy of diagnosing microelementoses in animals continues to be an actual task of science. The strategy to choose the optimal biosubstrate for the assessment of mineral metabolism in animals was the goal of present research. The studies were performed on 2.5-3 months bulls of the black-and-white breed, in which blood and hair were examined for the content of the corresponding elements for 60 days after the prophylactic course of the complex mineral preparations. It is shown that the retrospective provision of animals with minerals was most indicative in a hair analysis. Hair reflect the orally incoming element from 9-13 days. Blood, as a diagnostic marker, is of great importance for assessing the effectiveness of therapeutic and prophylactic actions up to 9 days from the oral intake of elements.