1. Department of Biochemistry of Nutrition, University of Hohenheim, Stuttgart, Germany
2. Department of Internal Medicine VIII, University Hospital Tuebingen, Tuebingen, Germany
3. Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
4. HoLMiR-Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
5. Institute of Physiology, Department of Vegetative and Clinical Physiology, University Hospital Tuebingen, Tuebingen, Germany