1. Clinic for Zoo Animals; Exotic Pets and Wildlife; Vetsuisse Faculty; University of Zurich; Zurich Switzerland
2. Institute of Physiology; Physiological Chemistry and Animal Nutrition; Ludwig-Maximilians-University; Munich Germany
3. Leibniz Institute for Zoo and Wildlife Research (IZW); Berlin Gemany
4. Ruminant Nutrition; Department of Animal Sciences; University of Göttingen; Göttingen Germany