Genome scans have enabled the detection genomic regions with quantitative trait loci (QTL) for economic traits. While most studies have focused on QTL with a Mendelian mode of expression, recent studies have detected QTL for which expression depends on parental origin, i.e. gametic imprinting. Knott et al. (1998) were the first to search for imprinted QTL in a genome scan. They inferred imprinting when effects differed significantly from Mendelian expression. Jeon et al. (1999) and Nezer et al. (1999) found paternal imprinting for muscularity in the IGF2 region of chromosome 2 in pigs. De Koning et al. (2000, 2001) modified the approach of Knott et al. (1998) and reported a large number of imprinted QTL for growth and meat quality traits in pigs. They inferred imprinting if the contribution of only one parental allele was significant. The purpose of this study was to further develop tests for imprinting and to characterize QTL for growth and meat quality traits in a Berkshire-Yorkshire cross family

H. Thomsen, Jack CM Dekkers, H. K Lee, Max F Rothschild

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 2002. Session 15, , 15.05, 2002
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