Peculiarities of the feed additive “germatsink” influence on maicronutrients and vegetative status of the productive cows

The paper presents the results of the studies of the influence of feed additive “Germatsink” on the content of zinc, copper, iron, magnesium, lithium in the blood cells and serum of cows with different tones of autonomic nervous system. Micronutrients determination was conducted by atomic absorption spectrophotometry in a flame mode. Zinc content in in the blood cells depended on the tone of the autonomic nervous system. Zinc content in blood cells of cows with different autonomic tones increased by 6.8–10.5 % and 9.0–13.3 % from the 10th to the 30th day respectively after feed additive was given. Application of feed additive “Germatsink” showed significant increase of copper content in the blood cells of sympathicotonic cows by 12.9 % (p