1. Livestock and Poultry Research Centre; College of Basic and Applied Sciences; University of Ghana; Legon Ghana
2. Wildlife Research Center of Kyoto University; 2-24 Tanaka-Sekiden-cho Kyoto 606-8203 Japan
3. Department of Animal Science; College of Basic and Applied Sciences; University of Ghana; Legon Ghana
4. National Institute for Environmental Studies; 16-2 Onogawa Tsukuba-City Ibaraki 305-8506 Japan