%0 Journal Article %T BIOTECHNOLOGICAL METHODS OF INCREASING THE EFFICIENTY OF CATTLE BREEDING %A Samodelkin, A.G. %A Eremin, S.P. %K : postnatal pathology, diseases of calves in the early postnatal period, tissue drug, weight gain, efficiency of cattle. %J Vestnik of Kazan State Agrarian University %D 2014 %N 9 %P 3 %I Kazan state agrarian University