EN
The influence of additional contaminations characteristic for the copper industry on the level of Pb, Cu and Zn in soil, plants and cows (blood, liver, kidneys, muscles, udder, milk) was examined. Besides, haematological examinations were carried out on experimental and control cows. No significant correlations were found between the level of Pb, Cu and Zn in soil and plants and the content of the above compounds in the bodies of cows. However, a significant negative influence of additional specific sources of contamination (flotation, containers of postflotation wastes, roads, heat and power generating plants) was observed in the increased content of heavy metals in the body of cows. Significant differences in the average levels of Pb, Cu and Zn took place in the blood, liver and milk. In the muscle longissimus dorsalis there appeared alterations in the content of Pb, Cu and Zn, while in the kidneys and udders the differences were significant only for the content of Pb.