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Results of progeny testing of pigs on stations of the Institute of Animal Production in 1979



Results of progeny testing of pigs on stations of the Institute of Animal Production in 1979



Wyniki oceny swin na podstawie badan przeprowadzonych w stacjach kontroli uzytkowosci rzeznej trzody chlewnej Instytutu zootechniki za rok 1979: 129



This paper reports the results of progeny testing of Polish Large White, Polish White Lop-eared, Zlotniki White and Zlotniki Pied pigs from 83 farms on 4 testing stations in 1979. Selection indices comprising the av. daily gain, mean backfat thickness, eye-muscle area and weight of lean from the ham of tested pigs, expressed as deviations from contemporaries, were calculated for 1584 groups, each of 2 full-sib gilts. 95 of the 181 sires had positive ratings.

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