Affiliation: | 1. INRA, UMR1079 Systèmes d''Elevage Nutrition Animale et Humaine, F-35590 Saint-Gilles, France;2. Agrocampus Ouest, UMR1079 Systèmes d''Elevage Nutrition Animale et Humaine, F-35000 Rennes, France;3. Animal Sciences Group of Wageningen UR, PO Box 65, 8200 AB Lelystad, The Netherlands;4. School of Agriculture, Food and Rural Development, Newcastle University, Agriculture Building, Newcastle Upon Tyne NE1 7RU, UK |