Affiliation: | 1. Norwegian Veterinary Institute, Department of Health Surveillance, P.O. Box 750, 0106 Oslo, Norway;2. University of Kassel, Farm Animal Behaviour and Husbandry Section, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany;3. Thünen Institute of Organic Farming, Trenthorst 32, Westerau 23847, Germany;4. University of British Columbia, Faculty of Land and Food systems, 2357 Main Mall, Vancouver, Canada BC V6T 1Z4;1. Animal Production Systems group, Wageningen University & Research, PO Box 338, 6700 AH Wageningen, the Netherlands;2. Livestock Research, Wageningen University & Research, PO Box 338, 6700 AH Wageningen, the Netherlands;3. Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Box 7068, 750 07 Uppsala, Sweden;4. Norwegian Centre for Organic Agriculture (NORSØK), Gunnars veg 6, 6630 Tingvoll, Norway;5. Norwegian University of Science and Technology, Department of Biological Sciences, Kompasset 271, Ålesund, Norway;6. Veterinary Physiology, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3012 Bern, Switzerland;7. Biometris, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, the Netherlands;8. Louis Bolk Institute, Kosterijland 3-5, 3981 AJ Bunnik, the Netherlands;1. Institute of Cognitive Neuroscience and Psychology, Hungarian Academy of Sciences, Budapest, Hungary;2. Department of Ethology, Eötvös University, Budapest, Hungary |