mohammad mehdi oloumi associate professor of veterinary surgery, department of clinical sciences, faculty of veterinary medicine, shahid bahonar university of kerman, kerman, iran. amin derakhshanfar associate professor of veterinary pathology, department of pathobiology, faculty of veterinary medicine, shahic bahonar university of kerman, kerman, iran atieh dabbaghian doctor of veterinary medicine graduate, faculty of veterinary medicine, shahid bahonar university of kerman, kerman, iran