1. Department of Animal Science, Wolaita Sodo University, Sodo, Ethiopia
2. Department of Animal Production Studies, College of Veterinary Medicine, Addis Ababa University, Addis Ababa, Ethiopia
3. Animal Nutrition, Debre Zeit Agricultural Research Center, Debre Zeit, Ethiopia
4. Department of Animal Science, College of Agriculture and Environmental Sciences, Bahir Dar University, Bahir Dar, Ethiopia