The efficiency of mapping of quantitative trait loci using cofactor analysis in half-sib design Goutam Sahana, Dirk Jan de Koning, Bernt Guldbrandtsen, Peter Sørensen and Mogens Sandø LundGenet. Sel. Evol., 38 2 (2006) 167-182DOI: https://doi.org/10.1051/gse:2005034