1. Department of Animal Science, College of Agriculture and Veterinary Medicine, Jimma University, Jimma P.O. Box 307, Ethiopia
2. Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
3. School of Animal, Rural and Environmental Sciences, Brackenhurst Campus, Nottingham Trent University, Nottingham NG1 4FQ, UK
4. International Centre for Agricultural Research in Dry Areas, Addis Ababa P.O. Box 5689, Ethiopia
5. Department of Postharvest Management, College of Agriculture and Veterinary Medicine, Jimma University, Jimma P.O. Box 307, Ethiopia