[1] University of Bern,Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty
[2] Research Institute of Organic Agriculture (FiBL),Department of Livestock Sciences
[3] Freie Universität Berlin,Dahlem Centre of Plant Sciences, Institute of Pharmacy
[4] University of Bern,Division of Clinical Dermatology, Department of Clinical Veterinary Medicine, Vetsuisse Faculty