QTL modulating ear size and erectness in pigs

W H Wei, D J de Koning, J C Penman, H A Finlayson, A L Archibald, C S Haley

Research output: Contribution to journalArticlepeer-review

Abstract

Ear size and erectness are important conformation measurements in pigs. An F(2) population established by crossing European Large White (small, erect ears) with Chinese Meishan (large, flop ears) was used to study the genetic influence of the two ear traits for the first time. A linkage map incorporating 152 markers on 18 autosomal chromosomes was utilised in a genome scan for QTL. Significant QTL were found on SSC1, 5, 7, 9 and 12 for the two traits. The QTL on SSC5 and SSC7 had major effects and were significant at the genome-wide level (P <0.01). The QTL on SSC1 for ear erectness also had a major effect and was genome-wide significant (P <0.01). The 95% confidence interval (CI) of the ear size QTL on SSC5 spanned only 4 cM. The QTL on SSC7 for the two ear traits each had a CI of
Original languageEnglish
Pages (from-to)222-6
Number of pages5
JournalAnimal Genetics
Volume38
Issue number3
DOIs
Publication statusPublished - 2007

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