1. Department of Veterinary Physiology, Ahmadu Bello University, Zaria, Nigeria
2. Department of Veterinary Pathology, Ahmadu Bello University, Zaria, Nigeria
3. Samaru College of Agriculture, Division of Agricultural Colleges, Ahmadu Bello University, Zaria, Nigeria
4. Department of Plant Science and Biotechnology, Federal University Dutsin-Ma, Dutsin-Ma, Nigeria
5. Swine and Rabbit Research Programme, National Animal Production Research Institute, Ahmadu Bello University, Zaria, Nigeria