1 | ETH Zurich, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland |
2 | ETH Zurich, Institute of Food, Nutrition and Health, Schmelzbergstr. 7, 8092 Zurich, Switzerland |
3 | Current address: University of Zurich, Institute of Animal Nutrition, Winterthurerstrasse 260, 8057 Zurich, Switzerland |