Detection of genes influencing economic traits in three French dairy cattle breeds Didier Boichard, Cécile Grohs, Florence Bourgeois, Frédérique Cerqueira, Rémi Faugeras, André Neau, Rachel Rupp, Yves Amigues, Marie Yvonne Boscher and Hubert Levéziel Genet. Sel. Evol., 35 1 (2003) 77-101 DOI: 10.1051/gse:2002037