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Objective: Biomonitoring pollution of water bodies with heavy metals using evaluation of the level of concentration of heavy metals in water, aquatic plants, and sediments in 9 important rivers and lakes in the water bodies of Yekaterinburg. (Eight rivers and one lake). Methods: Sample preparation for the atomic absorption determination of the acid-soluble “mobile” form of eight metals (Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb) in the composition of bottom sediments was carried out by the method of wet mineralization in accordance with the Methodological Guidelines the definition of heavy metals. Results: All concentrations of heavy metals in sediments and aquatic plants were higher than in a water sample. Conclusions: Concentrations of all water samples were within acceptable limits established by WHO, while the concentrations of all aquatic plants and sediment were above the acceptable limits of WHO.

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The studies were carried out on black-and-white cattle of the Ural intra-breed type, bred at the enterprises of the Sverdlovsk region. The studied groups of animals are formed depending on the milking technology (milking in a milk pipe, in milking parlors, robotic milking). The level of hormones in the groups of cows, where intensive milking technologies were used, is higher than in the groups of linear milking in the milk pipeline: prolactin by 17.2 ng / ml; adrenocorticotropic hormone by 10.3 pg / ml; cortisol by 5.3 nmol / l. The number of heifers with a high type of stress tolerance is on average 6.3% less in groups where intensive milking technologies were used in comparison with linear milking in a milk pipe.