1. Department of Veterinary Pathology , University of Ilorin , Ilorin , Nigeria
2. Faculty of Veterinary Medicine and Surgery , University of Ilorin , Ilorin , Nigeria
3. Department of Veterinary Pathology , Ahmadu Bello University , Zaria , Nigeria
4. Department of Veterinary Pharmacology and Toxicology , University of Ilorin , Ilorin , Nigeria