Bojko A. Meat productivity formation in young calves of exterior type of Polissian beef breed.

Research object: Animals of creating of exterior and other types in Polissian meat breed subject of invertigation. Aim and task of investigation: Aim and task of investigation consisted in studing of major peculiarities in growth and development, exterior and constitutional peculiarities of Polissian meat breed depending on the part of heredity according to imporoving breed. Methods: zootechnical (determination of living mass and linear growth during different age periods, structural indexes, building of exterior profiles), chemical, morphological and biochemical, biometrical. Scientific novelty: For the first time there was theoretically grounded, worked out and is realized selective programme of exterior type in moderately early ripening Polissian meat breed. It was stated that enlargemeat of heredity part of large sharolesian breed in breed combination leads to increase in intensity of mass and linear (length of trunk, length of hind part, breadth of crest and height in crest and sacrumums) growth,meat forms and strength of constitution are improved, the mass of the carcass grows. There was reusealed positive correlational connection between living mass and linear growth and this aids in selection of young animals for further usage in selective process in improvement of Polissian meat breed. Degree of introduction: results of the investigations are introduced into the plant "Klen" and confirmed by appropriate documents. Sphere (branch of using): can be used during educational process on the subject "genetics and animal breeding" and also in production.