Bacteriological examination of 18 outbreaks of avian pasteurellosis including 10 chickens, 4 ducks, 3 turkeys and one ostrich was carried out. The examination included microscopic examination, cultural, biochemical, pathogenicity and drug susceptibility test. The obtained results were recorded and discussed revealing the characteristics of Pasteurella multocida Furthermore, the protein profiles of Pasteurella mu/tocida strains isolated from chickens, ducks, turkeys and ostrichs were investigated using SDS —PAGE. The four isolats shared in 3 polypeptide bands ranging from 11 to 2C KDa. The major difference between isolates was in the position between 34 and 72 KDa region.