Chernishov I. Improvement of reproductive and fattening properties of pigs of different productivity lines through evaluation and selection based on nest equitability

The object of researches is sows, piglings, repair and fattening sapling, pigs of a different floor of breeds large white and dyurok. Purpose of researches - to study influencing of genotypic (breed, direction of productivity), ontogenetic (equitability nests, sexual belonging) factors on reproductive qualities of sows, fattening and meat qualities of pigs. Methods of researches is phenotypic, statistical, haematological. Results of researches: 1. For a theory - by the conducted complex researches of reproductive, fattening qualities of pigs of a different direction of productivity efficiency of estimation of sows and their posterity is proved in the aligned nests on the basis of changeability of sign of the features of forming and realization of productive potential of pigs of a different genotype are set, direction of productivity and floor depending on a equitability nest, genotypic differences in the display of compensating growth of piglings of a different floor are certain, that take place from the unaligned nests. 2. For practice are results are inculcated and is used in the selection process of improvement of pigs of breeds large white and dyurok in LTD "Plemzavod Steppe" the Camenco-Dnepr district of the Zaporozhian region. The sphere of the use is agricultural enterprises.