Affiliation: | 1. Division of Animal Welfare, Center for Proper Housing: Poultry and Rabbits (ZTHZ), VPH Institute, University of Bern, 3052 Zollikofen, Switzerland;2. Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Switzerland;3. Hendrix Genetics, 5831 CK Boxmeer, the Netherlands;4. Agroscope, Food Microbial Systems, 3003 Bern-Liebefeld, Switzerland |