[The effect of growth stimulators on the levels of various macroelements in chickens].

Nitrovin administered at the dose of 15 mg per 1 kg of diet, cyadox (20 mg) and virgiamycin (10 mg) were studied as to their effect on the contents of calcium, sodium, potassium and magnesium in the blood serum, breast and thigh muscles, and feathers of chickens. The contents of calcium, sodium, potassium and magnesium in the blood serum ranged within the physiological limits. An increased content of calcium and potassium and a decreased content of sodium were recorded in the breast and thigh muscles, as compared with the control group. The contents of these macroelements in the feathers of the experimental group were significantly different from those in the birds of the control group.