Prof. dr. Gunther Antonissen, Faculty of Veterinary Medicine, UGent - Prof. dr. Hagos Ashenafi, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia - Prof. dr. Kebede Amenu, College of Veterinary Medicine and Agriculture, Addis Ababa University, Ethiopia - International Livestock Research Institute (ILRI), Ethiopia