Authors:
Anton E. Chernitskiy,Tatiana S. Skogoreva,Vladimir A. Safonov,DOI NO:
https://doi.org/10.26782/jmcms.spl.10/2020.06.00013Keywords:
Cattle,hair analysis,atomic absorption spectroscopy,microelements,dam-newborn calf pairs,Abstract
Determination of the concentration of chemical elements in the switch hair of cattle in the ‘dam-newborn calf’ pairs is a non-invasive method to determine the bioelemental status of calves formed within the last three month of embryofetal development and its effect by the maternal bioelemental status. The study purpose is to examine the correlation between the bioelemental status of clinically healthy cows and their calves. 35 clinically healthy red-and-white cows and their offspring were the objects. In 2015 switch hair samples were obtained from 35 clinically healthy red-and-white cows and their calves located at a large cow unit soon after calving and the concentration of 12 chemical elements (iron, zinc, copper, manganese, molybdenum, cobalt, chromium, selenium, nickel, arsenic, strontium and cadmium) were determined by the atomic absorption spectroscopy (Shimadzu AA6300, Japan). The analytic expressions describing the dependencies of the accumulation of chemical elements in the embryo’s switch hair on the maternal bioelemental status of the dam were obtained. Statistically significant dependencies with the level of α = 0.05 were found for selenium, copper, cadmium and cobalt. The current level of α significance for zinc, iron, strontium, chromium, nickel, arsenic and manganese was 0.10...0.15. No statistically significant dependence was found between the concentration of molybdenum in the switch hair of newborn calves and their dams. The lack of СТ-Мо(СК-Мо) dependence shows that the level of molybdenum accumulated in a calf’s body within the last three months of embryofetal development almost does not depend on the elemental status of its dam (the last one was judged on the basis of molybdenum concentration in hair samples taken from the cows). The following concentration intervals were set for the examined elements in the switch hair of cows that ensure the optimal level of their accumulation in calves: from 97 to 117 mg/kg for zinc, from 5.2 to 9.3 mg/kg for copper, from 11.8 to 13.7 mg/kg for manganese, from 40 to 155 µg /kg for cobalt, from 8.5 to 11.5 µg /kg for chromium, from 230 to 370 µg /kg for selenium, from 0.2 to 0.4 mg/kg for nickel, from 80 to 170 µg /kg for arsenic, from 6.0 to 8.6 mg/kg, from 0.10 to 0.62 mg/kg for cadmium. The study results are of practical values for those specializing in veterinary and animal science as they enable to prognosticate the disturbances of bioelemental nutrition of cow’s fetus and provide for their timely correctionRefference:
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