1. Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland
2. Departement of Livestock Science, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
3. Laboratory of Sustainable Food Processing, ETH Zurich, Zurich, Switzerland
4. Department Sanitation, Water and Solid Waste for Development (Sandec), Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
5. AgroVet-Strickhof, ETH Zurich, Lindau, Switzerland