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When managing livestock in technologically polluted areas to assess and prevent the negative impact of feed on farm animals, to obtain products that meet sanitary and hygienic safety requirements, it is important to monitor constantly the levels of pollution by main ecotoxicants in all parts of the trophic chain soil — feed — animal body — livestock production. If acceptance contamination levels are higher than it is required, it is necessary to take measures for contaminants decreasing in final livestock products. A review of the study of intake mercury, lead and arsenic with feeds in cattle and sheep organisms under the condition of technogenic–affected agricultural areas is presented in this paper. Estimation of the contamination levels of individual links of the food trophic chain by these ecotoxicants is given. The article describes the experience of using enterosorbents in the diet as one of the most important ways to reduce the content of heavy metals in the body of farm animals and in the final products of animal husbandry.

Intake mercury lead and arsenic with feeds and their accumulation (bioconcentration) in cattle and sheep organism