Kovalenko V. Formation of the milk production of cows with different features periods of their early postnatal ontogenesis

The thesis is devoted to the substantiation of efficiency evaluation and forecasting milk cow production on the specifics processes in growing and developing repaired heifers. At first, for fat milk type heifers interbreed Ukrainian Red Dairy breed, is proved that animals with low values intensity formation indexes, tension and uniformity have fast paced slowdown growth; high exponential, while a low value of kinetic T. Bridges models in the group with slow formation of the body, at the same time, shows high milk productitity. The statement for cattle of the fat milk type interbreed Ukrainian Red Dairy breed has been developed. Unevenness and frequency of its growth processes during the brining up of specific features available for young slow and fast types of the body formaton, dependance on milk production and their intensity growth and parents' continuity. The reasonableness of higher milk yield expectations in the group M+-variant in the conditions of using techniques in modeling stabilizing selection effect. The reseached evaluation methods of economically useful traits, in considering the presented methods about improveing milk production, are provided an opportunity to improve basic approaches in forming newly created herds of dairy cattle breed, its type, provideing 3,21-12,65% increase in productivity of livestock farms in the southern region of Ukraine.