Abstract
The article presents the results on the level of migration of heavy metals in the food chain «feed-milk» of the farm «Aidarbayev», located in the Almaty region. A total of 56 feed samples and 30 milk samples were analyzed during the study period. Sampling from the facilities was carried out in the spring, summer and autumn of 2020 in accordance with the State Standards of the Republic of Kazakhstan and interstate standards. Work on determining the concentration of heavy metals was carried out on a novaa 350 atomic adsorption spectrometer with a talab voltammetric analyzer (Germany) at the Kazakhstan-Japan Innovation Center. It is proved that the increase in the concentration of cadmium, lead, mercury and arsenic in the daily diet of cows in winter or summer pasture periods is proportional to the increase in their content in milk. It was found that the level of heavy metals (Cd, Pb, As, Hg) in feed and milk does not exceed the MPC. The results obtained can serve as a basis for monitoring the state of the environment on the content of heavy metals in natural objects of the country.
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