1. Animal Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Melle, Belgium
2. Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
3. Behavioural Ecology Group, Wageningen University, Wageningen, The Netherlands
4. Adaptation Physiology Group, Wageningen University, Wageningen, The Netherlands
5. Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food, Merelbeke, Belgium