Nebylytsia M. S., Bojko O. V.
Pages: 55-60.

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Abstract

The purpose. To improve algorithm of criteria of selection of pigs of male parental form by results of assessment of animals of 4 generations with the help of BLUP method. Methods. Theoretical and methodological basis of research were works by Ch.R. Henderson, R.A. Mrode, V.M. Kuznetsov, N.P. Yudina, and other scientists on the investigated problem. During researches they applied general trial-and-error method: measurement, comparison, simulation; and special — BLUP, zoo-technical, instrumental, etc. Biometrical analysis of data was carried out with the help of statistical and mathematical methods, realized in package Statistica 6. Results. Researches testify to the following: selection of pigs in herd with the use of BLUP-index assessment is necessary for realizing in some stages, proceeding from the reached level of productivity, and also the purposes and problems of selection. For preliminary determination of the best alternatives of selection of young boars and pigs they simulated 5 levels of selection pression on terminal BLUP-index. With increase of selection pression they traced dynamics of values of attributes of specific breeding value of animals which treated to different pleiads, for the purpose of stabilization of their reproductive qualities. At the final stage the selection of young boars and pigs was spent on minimum acceptable values: terminal BLUP-index, specific breeding value of daily average increase, width of fat, length of a trunk and amount of papillae. Simulation of results of selection at the improved algorithm of criteria of selection in herd testifies to the following: selection effect for one generation on specific breeding value of width of fat and daily average increase makes–0,53 mm and +4,66 g accordingly. Conclusions. By results of researches it is established that development of algorithm of selection of animals of male parental form promoted increase of genotypic consolidation of young boars on specific breeding value of daily average increase and width of fat on 50,8 and 65,6%, and young pigs — on 23,1 and 32,6% accordingly.

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Keywords: biometrical analysis, genotypic consolidation, breeding value, selection effect.

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