Kravchenko O. Features of growth and reproductive ability of boars sires of different genotypes

The object of researches is Estimation of influencing of genotipicheskih factors and intensity of growth on forming of reproductive power of male hogs-producers of large white breed of foreign selection, red belopoyasoy breed and vnutriporodnogo type of pigs of breed of the dyurok Ukrainian selection of "Steppe". The purpose of researches is the study of indexes of growth and development of hryachkov in an age aspect; to explore the morphological and biochemical indexes of blood; to explore the morfogistologicheskie indexes of semennikov and appendages of male hogs; to estimate the features of forming of reproduktivnih organs and becoming of sexual function of male hogs; to estimate spermoproduktivnost male hogs; to conduct morfometriyu spermiev of male hogs of different genotypes; to study reproductive power of male hogs-producers depending on a breed on reproductive qualities of the impregnated sows. The methods of researches are zootechnicss, biological, morphological, laboratory, biometricheskie, analytical. Results of researches: 1. For a theory - Scientific researches extend theoretical knowledges in relation to the biological features of the accrued genotypes, that are new for the study of questions on the disciplines "Physiology with.th. animals" and "Technology of reproduction of animals". 2. For practice - the Directed growing and early training of hryachkov to the phantom in 3-monthly age is instrumental in the receipt of sperm in 4-5 - monthly age and estimations of them on spermoproduktsii, that enables in 6-monthly age to get complex estimation of male hogs-producers on development and own productivity. The sphere of the use is the agricultural enterprises of Ukraine.