The content of heavy metals in the cow hair of the northern-eastern biogeochemical zone
AbstractThe anthropogenic pollution of the environment in most cases connected with trace elements of heavy metals group. The effect of negative technogenic factors of the environment by interaction with the natural deficiency of essential microelements contributes to the appearing and spread of pathology of mineral metabolism among farm animals. The application of noninvasive methods for diagnosis of diseases of farm animals is a promising direction in veterinary medicine. The question of impact of the northern-eastern biogeochemical zone of Ukraine on the content of heavy metals in cows hair with consideration of lactation, keeping technology and colour hair samples is not researched enough. The research was conducted in the three farms of Chernihiv region (northern-eastern biogeochemical zone). The content of heavy metals was investigated by atomic emission spectrometry using Optima 210 DV. The materials the author’s own research to determine the status of the cow organism by noninvasive method in the northeastern biochemical zone of Ukraine concerning the content of heavy metals in different periods of lactation, keeping technology are introduced in the work. The content of Cadmium, Plumbum, Aluminum and Arsene in the hair of cows northeastern biogeochemical zone of Ukraine depending on the colour samples of hair (black, brown, white), keeping technology (loose, stable-pasture, stable) and period of lactation (55–65 days, 150–170 days) are investigated. The concentration of heavy metals in the hair of cows of the northeastern biogeochemical zone of Ukraine are: Cadmium – 0.03 ± 0.004 mg/kg, Plumbum – 0.70 ± 0.11 mg/kg, Aluminum – 16.78 ± 4.02 mg/kg, Arsene – 0.21 ± 0.05 mg/kg. In the hair of cows of the northeastern zone in 55–65 days of lactation the content of Cadmium is 0.04 ± 0.01 mg/kg, Plumbum – 0.83 ± 0.31 mg / kg, Aluminum – 15.79 ± 3.83 mg/kg, Arsene – 0.30 ± 0.14 mg/kg. In 150–170 days of lactation period the content of Cadmium is 0.04 ± 0.005 mg/kg, Plumbum – 1.25 ± 0.35 mg/kg, Aluminum – 22.34 ± 14.21 mg/kg and Arsene – 0.25 ± 0.07 mg/kg.
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