The use of salt briquettes with sorbent and mineral substances for production of environmentally safe milk of cows in the conditions of oil and gas of technogenesis

In the region of the oil and gas technogenesis supplementation of lactating cows with salt briquettes ferrocine reduces the concentration of lead in milk at day 10 by 14,4 by 20-th – 15,6 on the 30th 16,8 on the 40-th by 19,9%, from ferrocine and trace elements – cadmium for 10, 20, 30 and 40-th day, respectively by 19,9, 11,0, 12,4 and 28,8%, making for an environmentally safe dairy products.