Tribrat R. Productive qualities and objective a laws of formation male and female pigs of duroc breed the Ukrainian selection.

3. Object: productive qualities of pigs lines new factory type of duroc breed Ukrainian selection Open Society "Plemzavod "Steppe"; the purpose of researches: studying laws of formation and productive qualities lines and families pigs of duroc breed the Ukrainian selection, with the account immunological parameters of animal's blood different structural elements of breed; methods: genetic, statistical and biometric methods with application of the dispersive and correlation analysis, the standard methods of definition imunological parameters of blood; results: 1) for the theory - results of long-term researches and practical selection of pigs duroc breed for the first time are generalized and investigated at thoroughbred cultivation during creation of new lines and families; 2) for practice - results of researches are a part of work on creation of new factory type of pigs duroc breed the Ukrainian selection. The certain features imunological parameters of blood of pigs different lines and families whichit was used for purposeful selection with the purpose of increase of a genetic variety animal herds.