Goal. To assess the effect of feeding calves with silage from a 4-component mixture of spring legumes (oats + field peas + lupine + vetch) compared to silage from Echinochloa frumentacea on the level of Pb and Cd accumulation in their muscle tissue and liver. Methods. 2 groups of experimental calves were formed: Group I (control) — fed with leguminous silage; Group II (experimental) — received experimental silage from Echinochloa frumentacea. Preparation of samples of plant and animal origin for the establishment of heavy metals in their composition was carried out by the method of dry mineralization, analysis — on the atomic absorption spectrophotometer “Kvant-2A». Results. The concentration of heavy metals in the feeds of the diets of experimental animals was determined. It was found that the presence of Pb and Cd in feed led to their accumulation in the longest muscle of the back and liver of calves. Feeding young cattle with different silage affected the accumulation of heavy metals in the products. The concentration of Pb and Cd in the longest muscle of the back and liver of calves was found to be lower than the maximum allowable concentration. Conclusions. Replacement in the rations of multicomponent silage from legumes (oats + field peas + lupine + vetch) for silage from Echinochloa frumentacea for fattening calves in the III-rd zone of radioactive contamination hurt the environmental quality of products, increasing the content of heavy metals in a muscle on 5 4–33.3%. At the same time, the rate of transition of Cd to the longest back muscle was lower by 0.68% abs. in young animals of the II-nd (experimental) group in comparison with the control.