Genetic and environmental effects on semen traits in Lacaune and Manech tête rousse AI rams Ingrid David, Xavier Druart, Gilles Lagriffoul, Eduardo Manfredi, Christèle Robert-Granié and Loys BodinGenet. Sel. Evol., 39 4 (2007) 405-419DOI: https://doi.org/10.1051/gse:2007011