IMPROVING REPRODUCTIVE TRAITS OF SOWS OF LANDRACE BREED IN CONDITIONS OF BREEDING FARM OF INDUSTRIAL TYPE

Over the past 5 years in the Republic of Belarus positive trends in growth of animal performance and their genetic potential have been determined. Currently the achievements of the world’s best breeding are used in this field for improvement of domestic breeds of pigs, rapid introduction of breeding material through regional SIO is carried out. In practice, methods of selection based on DNA technologies have been worked out and widely implemented. The purpose of the work is to obtain high-productive maternal genotypes of pigs in Landrace breed on the basis of selection and genetic methods and to predict their performance for a number of generations. Performance traits of pigs in several generations of imported Landrace breed in conditions of breeding farm were studied. The coefficients of heritability and the selection differential of selected key features by reproductive traits of sows in the initial generation were determined, on the basis of which the forecast of effect of selection on the number of generations was carried out. Target selection standards are developed for piglets selection for breeding process. The researches made it possible to make an accurate prediction of the performance traits of sows, as well as to form a highly productive herd of Landrace breed animals. To adapt them to the conditions of pork production on an industrial basis in a short time period. To prove that in case of target breeding in a number of generations, their reproductive traits can be substantially improved, and also based on genetic and population techniques and methods to predict their performance traits for a number of generations with a high degree of reliability.

sows, reproductive traits, selection differential (Sd), phenotypic variation, heritability ratios (h² )

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