M. S. Abubakar1,2*, M. Y. Fatihu3, N. D. G. Ibrahim3, S. B. Oladele3 and M. B. Abubakar2
1Department of Veterinary Pathology and Microbiology, Universiti Putra, Malaysia.
2Department of Veterinary Pathology and Microbiology, Usmanu Danfodiyo University, Sokoto, Nigeria.
3Department of Veterinary Pathology and Microbiology, Ahmadu Bello University, Zaria, Nigeria.
