Interior constitution type classification in black-and-white and Holstein breeds

In black-and-white and Holstein breeds the blood serum for ALT and AST ferments concentration alkaline phosphatase and amylases has been studied. Under the results of a massive blood research as well as on the base of genetic-population analysis with the glance of interior-complementary selection the animal groups of hypofermentative, transitional and hyper-fermentative types were formed. They served as the basis for interior constitution type classification development in dairy cattle.