1. Animal Welfare Laboratory, Department of Animal Science, Federal University of Paraná, Curitiba, Brazil
2. Animal Sciences Unit, Institute for Agricultural and Fisheries Research (ILVO), Melle, Belgium
3. Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
4. Department of Statistics, Federal University of Paraná, Curitiba, Brazil
5. Department of Farm Animals, World Animal Protection, São Paulo, Brazil