Shcherbatyj Z. Methods of consolidation of western interbreed type of Ukrainian Black-Spotted Dairy type while using the different genotype group of Black-Spotted cattle

The object of investigation - heifers, cows and bulls-breeders of Ukrainian Black-Spotted milk breed, productive qualities, interior; aim of investigation - to learn the selective-genetic parameters of different genotype groups of Black-Spotted cattle and to find out the possibility of their using at consolidation of Western interbreed types, to find out by separate polymorphic protein system the genetic animals structure of different groups of Black-Spotted cattle, bulls' cows-daughters of different genotypes, their transformation in the processes of selection and the connection with the productivity and possibility of using as genetic markers of productivity; methods of investigation and equipment - experimental, biometrics, biochemical, immunogenetic, centrifuge, termostat, ultratermostat, refractometer RL-3, FEC, apparatus for electroforesc; the theoretical and practical results - for the first time it was studied the peculiarities and display of milk productivity in cows of Holland and German Black-Spotted breed of different generation, cows of Ukrainian Black-Spotted milk breed with different part of heredity and Holshtine breed, the level of realization the genetic potential of different generation of bulls in the conditions of Western region of Ukraine; novelty - it was determined, that aleli TfD of transferinic locus and some complexes of transferini, amilase and ceruloplasmine are the genetic markers of milk productivity in cows; degree of inculcation - the results of investigation are introduced in three herds of Ukrainian Black-Spotted milk breed with the economical effect 328,4 thousands of gryvni per year; branch of using - cattle breeding and selection.