[The effect of different feeds on keeping parameters of heavy metals in the rations and milk of cows]
2006
Nenashev, A.A. | Kalinichenko, S.A. | Yanochkin, I.V.,Institute of Radiology, Gomel (Belarus)
Regularities of heavy metals transition (zinc, copper, manganese and lead) in forages and cow milk containing on the radioactive polluted territories of some facilities of the Belarus Polese were studied. Keeping parameters of Zn, Cu, Mn, Pb in basic feeds and milk of cows in different rearing and soil conditions were established. Heavy metals contents in forages of the summer-pasturable period varies in depending on their botanical structure while during the winter-stall period a major factor defining concentration of heavy metals in forages, along with their kind and quality, is the dry matter. Change of sizes of heavy metal accumulation factor in a link soil-forage for various kinds of forages is characterised by similar regularities with their absolute content. During the pasturable period the diet is characterised by higher content of heavy metals in comparison with winter-stall period, and the maximum distinctions (in 2,2 times) connect with lead. The content of zinc, copper and lead in blood serum and milk also above during the pasturable period (in 1,3-1,6 times)
显示更多 [+] 显示较少 [-]