ELEMENT COMPOSITION OF COWS MILK AT APPLICATION OF NATURAL FEED ADDITIVES
Development of the heavy, mining, overworking industry has significant effect on environment, polluting it by harmful production wastes and emissions. Research of ways of decrease in content of harmful substances in production of animal husbandry - one of the major tasks of improvement of quality and ecological safety of food. The solution of this task is application the zeolite-containing of feed additives which will bark the adsorbing and ion-exchange properties. In this regard we have set a goal to study element composition of milk of cows when using natural feed additives in the conditions of Central Urals. As a result of researches it has been established that in the soil excess of maximum concentration limit on a content of separate macro- and microelements hasn’t been noted. In water small excess of the maximum allowable level (MAL) on the content of nickel - on 0.02 g/kg, iron - on 0.7 mg/kg and the most admissible content of lead is noted. In sterns excess of MAL on a nickel content by 2.2 time, iron - by 7.6 times is also observed. Such maintenance of elements has exerted impact on their concentration in an organism of cows. In blood of cows of control group during the entire periods of research excess of MAL on cobalt for 25-30 %, iron - for 132-137 %, to nickel - by 4-8 times was observed. In blood of the cows receiving natural enterosorbents, namely zeolite and glaukonit, there is a decrease in content of the above-named metals to norm, not exceeding MAL. Application of natural mineral feed additives increases the quality of milk received in zones of technogenic pollution.