Efficiency of feeding of lactating cows with green mass of maize, sorghum and maize mixture with lupine, grown on the territory with radionuclide pollution | Эффективность скармливания лактирующим коровам зеленой массы кукурузы, сорго и смеси кукурузы с люпином, возделываемых на территории радиоактивного загрязнения
2012
Tsarenok, A.A. | Yanochkin, I.V. | Naumchik, A.V. | Makarovets, I.V., National Academy of Sciences (Belarus). Institute of Radiology
Productive effect of feeding lactating cows with green mass of maize, sorghum and maize mixture with lupine (50% + 50%), grown on the territory with radionuclide pollution was studied. It is determined that the use of green mass consisting of a mixture of maize and lupine can increase the average daily milk yield by 12.9% compared with green mass of corn in its pure form. In the experiment transition ratios of 137Cs и 90Sr from diet into in the milk on the basis of green mass of sorghum, mixture of corn and lupine were determined. Replacement of green mass of corn by the green mass sorghum allows cows to increase milk production by 3%. Coefficients of transition of 137Cs and 90Sr from the diet based on the mixture of green mass of maize and lupine into milk of cows were 0.65 and 0.14%, respectively. Transition coefficients of 137Cs and 90Sr from the diet based on sorghum green mass into the milk of cows were 1.37 and 0.25%, respectively. Transition coefficients of 137Cs and 90Sr from the diet on the basis of green mass of corn into the milk of cows were 0.13 and 0.57%, respectively. The cultivation of maize, corn-lupine mixture and sorghum on arable land contamination density 90Sr to 20.7 kBq/m2 (0.56 Ci/km2) to receive green fodder containing 90Sr, meeting the requirements of the content of the radionuclide in the green material used for feeding dairy cows.
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