The Tai zumu line was produced by intercrosses (F2, F3, F4...) between Large White and Meishan pigs and selection to improve growth and carcass traits. Microsatellites covering the genome were analysed on animals of different generations to identify selected regions through allelic frequency evolutions. Simulations were performed to estimate the probability of a genetic drift. This analysis put in evidence a large increase of frequency of an allele of MS origin on chromosome 7 in the region where QTL were previously mapped. These results demonstrate the interest of analysis of breeding lines under selection for QTL fine mapping.

J. Riquet, G. Laval, N. Iannuccelli, J. Demars, O. Demeure, M. Sourdioux, M. SanCristobal, M. P Sanchez, C. Chevalet, C. Gasnier, J. P Bidanel, D. Milan

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 06.19, 2006
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