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In article results of researches on studying of influence of various doses of nanoproduct “M-Feed” on hematological parameters and the dynamics of live weight Kalmyk breed rams for ages. The authors found that in almost identical production live weight of the rams of the second experimental group, treated with M-Feed” dosage of 5 g per head per day by the end of the experience had a live weight at 6,26 kg more than control counterparts (P < 0.01), 4.1 kg, than the first experimental group (P < 0.001) and 2,84 kg in the third group (P < 0.01). During the period of experiment the rams in the second experimental group was given absolute increase 39,57 kg, which is higher than that of control - 6,06 kg, analogues of the first experimental group - 4,43 kg and the third - on 2,51 kg. In the blood of growing rams Kalmyk breed of sheep experimental groups treated with different dosages of feed additives “M-Feed” there has been some increase in the number of erythrocytes and hemoglobin. Thus, the content of erythrocytes in the blood of rams from the control group was 1.2% (P > 0.05) and 0.8% (P > 0.05) lower than that of counterparts, from the first experimental group, 12,14 and 10.8% (P < 0.01), from the second group by 3.2 and 2.7% than in the third experimental group (P > 0.05).