1Departments of Animal and Wildlife Sciences, University of Pretoria, Pretoria 0002, South Africa.
2Oromia Agricultural Research Institute, Adami Tulu Research Centre, P. Box. 35, Zeway, Ethiopia.
3Ethiopian Meat and Dairy Technology Institute, P. Box. 1573, Debre Zeit, Ethiopia.
4Sustainable Environment and Development Action (SEDA), Meki, Ethiopia.
Email: [email protected]