1. Institute of Animal Nutrition; Federal Research Institute for Animal Health; Friedrich-Loeffler-Institut; Braunschweig Germany
2. Department of Animal Nutrition and Nutritional Physiology; Justus-Liebig-University; Gießen Germany
3. BASF SE; Lampertheim Germany
4. Institute of Agricultural and Nutritional Sciences; Group Animal Nutrition; Martin Luther University Halle-Wittenberg; Halle (Saale) Germany