Shablia V. Theoretical grounding and developing methods of early prediction of economic-useful traits of dairy cattle

The object of researches is development of effective methods and models of prognostication of economic-useful signs of milk cattle, suitable for the early selection of heifers. The purpose of researches is the ground, development and comparative test of efficiency of different methods and models of prognostication of level of economic-useful signs of cattle of milk direction of productivity on the basis of complexes of indexes of heifers. The methods of researches are zootechnics; histological; physiology; statistical; economic. Results of researches: 1. For a theory - conception and system of methods of prognostication of economic-useful signs of milk cattle with the use of multidimensional statistics on the basis of the following complexes of indexes of heifers is First developed: exterior; histological; reactions on influencing; circumferences of rudiments of udder. Selection and economic efficiency of early selection of heifers with the use of these methods is definite. Their scalene comparative estimation, verification and approbation, is conducted. 2. For practice - Results of researches are inculcated in 15 economies of different regions of Ukraine at prognostication of economic-useful signs and conducting of early selection of heifers; an economic effect is collected from 70 to 625 UAH on the appraised heifer. Models suitable for the use in most herds of milk cattle are developed, and methods of prognostication - for development of the models intended for any milk herds. The methods of prognostication are used by Institute of stock-raising, Institute of stock-raising of the steppe districts "Askaniya-Nova", by the Ternopol and Bukovinian institutes of agroindustrial production for development of models of prognostication of the economic-useful signs, adapted to the terms of different Naturally climatic areas of Ukraine, levels of feeding, methods of maintenance, and also models intended for definite breeds and genetic groups of milk cattle. The sphere of the use is the economies on maintenance of milk breeds of cattle.