Affiliation: | 1. Animal Nutrition Group, Department of Animal Sciences, Wageningen Institute for Animal Sciences (WIAS), Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands;2. Crop and Weed Ecology Group, Department of Plant Sciences, Wageningen University, P.O. Box 430, 6700 AK Wageningen, The Netherlands;3. Department of Plant Production, Faculty of Bioscience Engineering, Ghent University, Belgium |