HEMATOLOGICAL PARAMETERS AND RESISTANCE OF CALVES DIFFERENT GENOTYPES

At the present stage of development of dairy cattle breeding importance of morphological and biochemical blood composition, immune protection of the organism from various diseases. In this regard, research has focused on the study of hematological status and resistance of the organism brown Swiss cattle in different periods of cultivation. It is established that if one of the bulls derived from brown Swiss cows breed local populations and bulls of American selection, morphological and biochemical parameters blood was superior to the analogs of the local populations, on cellular and humoral immunity superiority was on the side of young brown Swiss breed the local population.