1. Department of Safety and Quality of Milk and Fish Products, Max Rubner-Institut (MRI), Hermann-Weigmann-Str. 1, 24103 Kiel, Germany
2. Department Safety in the Food Chain, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
3. Institute of Animal Nutrition and Physiology, Kiel University (CAU), 24118 Kiel, Germany
4. Department of Quality and Safety of Meat, Max Rubner-Institut (MRI), E.-C.-Baumann-Str. 20, 95326 Kulmbach, Germany
5. Institute of Animal Nutrition, German Federal Research Institute for Animal Health, Friedrich-Loeffler-Institut (FLI), Bundesallee 37, 38116 Braunschweig, Germany
6. Institute of Food Chemistry, University of Münster, Corrensstrasse 45, 48149 Münster, Germany
7. Department of Animal Nutrition, University of Hohenheim, Emil-Wolff-Str. 10, 70599 Stuttgart, Germany