Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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MORPHOLOGIC COMPOSITION, BLOOD METABOLITES AND INDICES OF NONSPECIFIC IMMUNITY OF BULLS WITH DIFFERENT GENOTYPES

Poberuhin M.M. 1 Levahin V.I. 1 Salo A.A. 1 Schwindt V.I. 1 Ryabov N.I. 1
1 All-Russian Research Institute of Beef Cattle Production Russian Academy of Agricultural Sciences
The recent researches revealed that crossbreeding of Red steppe cows and Kazakh white-headed, Simmental and Kalmyk cattle allowed us to obtain beef young cattle with high growth intensity - in average daily live weight gain by 5,3-13,6% and to sell meat of calves in age of 18 months with live weight 489-529 kg. The interrelation of morphological blood composition and productivity of beef young cattle is established. Bulls with better weigh gain in blood had higher concentration of erythrocytes, hemoglobin, protein, lipids, sugar, calcium, phosphorus and acid capacity. It is typical for crosses of Simmental and Red steppe breeds that have the highest growth efficiency. The positive influence of commercial cross breeding on indices of nonspecific immunity of the obtained young cattle, especially crossbreeding Kalmyk and Red steppe breeds, data on bactericidal and lysozyme activity of blood serum attest to that.