1. Institute of Animal Nutrition; Friedrich-Loeffler-Institute (FLI); Federal Research Institute for Animal Health; Braunschweig Germany
2. Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals; Faculty of Veterinary Medicine; Justus-Liebig-University Giessen; Germany
3. Clinic for Ruminants; Ludwig-Maximilians-University; Munich Germany
4. Clinic for Cattle; University of Veterinary Medicine Hannover; Germany
5. Faculty of Life Sciences; Institute of Food Chemistry; Technische Universität Braunschweig; Germany