Support for single major genes influencing fat androstenone level and development of bulbo-urethral glands in young boars MN Fouilloux, P. Le Roy, J. Gruand, C. Renard, P. Sellier and M. Bonneau Genet. Sel. Evol., 29 3 (1997) 357-366 DOI: 10.1051/gse:19970304