[1] French Pork & Pig Inst IFIP, Econ Unit, F-31500 Toulouse, France
[2] INRA, PEGASE UMR1348, F-35590 St Gilles, France
[3] Agrocampus Ouest, PEGASE UMR1348, Lab SPA, F-35042 Rennes, France
[4] Univ Bonn, Inst Anim Sci ITW, DE-53115 Bonn, Germany
[5] IRTA Monells, Monells 17121, Spain
[6] Wageningen UR, NL-8200 AB Lelystad, Netherlands
[7] Bauer Erzeugergemeinschaft Schwabisch Hall, DE-74549 Schwabisch Hall, Germany
[8] Danish Meat Res Inst, DK-4000 Roskilde, Denmark
[9] Nutreco R&D, Swine Res Ctr, NL-3818 KC Amersfoort, Netherlands
[10] Newcastle Univ, Sch Agr Food & Rural Dev, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England