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Updated: Aug 30, 2026

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Published on: August 13, 2019
Relation between Ava I polymorphism within the estrogen receptor gene (ESR) and meatiness in Polish Large White boars
Stanisław Kamiński1, Anna Ruść, Paweł Brym
1Department of Animal Genetics, University of Warmia and Mazury, Olsztyn, Poland. stachel@uwm.edu.pl
Abstract:
It is currently debated whether identification of ESR (estrogen receptor) genotypes should be introduced into breeding programs of Large White pigs. The aim of this study was to evaluate the possible relations between ESR/Ava I polymorphism and carcass performance traits in Polish Large White boars. We examined 103 boars originating from one herd in NE Poland. ESR/Ava I genotypes were determined by the PCR-RFLP method. By the use of the Duncan test, we found highly significant differences (P < 0.01) between WW and MW genotypes, as well as significant differences (P < 0.05) between WW and MM genotypes for meatiness. No significant differences were found for daily gain and selection index.
