Abstract
Due to constant changes in biogeocenozes caused by anthropogenic influence, monitoring of chemical elements in the organism of productive animals using modern diagnostic methods is an actual direction of scientific research. The research was carried out in the farms of the Kirovohrad and Kyiv regions, which are located in the central biogeochemical zone of Ukraine. The content of Zn, Cu, Ni, Cr, Co, Al, and Fe in blood, hair and saliva was investigated by means of inductively coupled plasma atomic emission spectrometry (ICP-OES) on the Optima 2100 DV device. It was found out that in the cow blood with symptoms of microelementosis the content of zinc is 1.7 times lower, ferum is 2.2 times lower, cobalt is 5.8 times lower, aluminium is 2 times lower, nickel is 2.1 times lower, and chrome is 9.7 times lower, in comparison with the corresponding indexes of clinically healthy animals. It was defined that in saliva cows with microelementosis the concentration of chrome is 2.4 times lower and ferum is 3.9 times higher in comparison with clinically healthy cows of the same area. In hair of cows with symptoms of disbolism of mineral elements the significantly lower content of zinc in 2.2 times has been found, ferum is 2.1 times lower, and cobalt is 4.2 times lower compared to the corresponding indices of clinically healthy animals. A significantly higher concentration of nickel in 7 times was found in red hair samples in comparison with black ones. A promising direction of veterinary medicine is the development of non-invasive methods for diagnosis of mineral disbolism in productive animals. Key words: lactation cows, blood, saliva, hair, microelementosis, ICP-OES method, trace elements
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