1. Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
2. Animal Nutrition, Production Systems, Natural Resources Institute Finland (LUKE), 31600 Jokioinen, Finland
3. Food BioSciences Department, Teagasc Food Research Centre, Ashtown, 15 Dublin, Ireland
4. Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden