M. Asif, M. A. Khan, H. Akbar and M. O. Omer
1Department of Clinical Medicine & Surgery, Faculty of Veterinary Sciences,
2Department of Pharmacology & Toxicology, Faculty of Bio-Sciences, University of Veterinary & Animal Sciences, Lahore, Pakistan, 54000.
3Riphah International University, Riphah College of Veterinary Sciences, Lahore, Pakistan, 54000.