Kurash V. Usage of energy of nutritious substanses half-bluded by black-motley and meat breeds young cattle depending on alive mass, age and sex

The purpose of researches - to study features of exchange and usage of energy half-blood young animals of Holsteined black-motley breeds with meat. Object of researches were half-blood bulls and heifer birth up to 18-month's age. The physiological, statistical and analytical and zootechnical methods were used. Is fixed, that half-breed bulls and heifer, especially Hereford, Sharoles and Kiang of breeds, have the best daily incremental values, will utilize of forages per unit of an incremental value less. Half-breed bulls for the best propagation the feeding level from 6-month's age should be increased on 20-25 of %, and heifer - on 25-30 of % in comparison with existing norms. The novelty of researches consists of study of features of exchange and usage of energy молодняком during cultivation received from crossing black-motley of the cows with bulls Kiang, Aberdeen-Angus, Sharoles and Hereford of breeds. The outcomes are utilized for want of to development of norms of a feeding young animals of meatty pes and breeds and are introduced in a zone of activity SDA " Meat cattle breeding of Podillya". Branch of usage - meat cattle breeding.