title: The effect of route of inoculation on the virulence of raptorial Pasteurella multocida isolates in Pekin ducks (Anas platyrhynchos).
abstract: The purpose of this study was to determine the virulence of raptorial Pasteurella multocida for ducks and the effect of various routes of inoculation on virulence. Four-week-old Pekin ducks (Anas platyrhynchos) were challenged with one of three raptorial isolates (RTHA-2, RTHA-4, or WESO-1) by one of five inoculation routes (intranasal, intraocular, intravenous, oral, and subcutaneous). Ducks were monitored daily for mortality until 2 wk postchallenge. Results indicated that the intravenous route caused the most mortality for all isolates and that significant variation existed in the virulence among the sources of P. multocida, with WESO-1 causing the least mortality of the isolates tested.
authors.affiliation: Department of Veterinary Preventive Medicine, Ohio State University, Columbus 43210-1092, USA.
authors.forename: F
authors.initials: F
authors.lastname: Pehlivanoglu
authors.forename: T Y
authors.initials: TY
authors.lastname: Morishita
authors.forename: P P
authors.initials: PP
authors.lastname: Aye
authors.forename: R E
authors.initials: RE
authors.lastname: Porter
authors.forename: E J
authors.initials: EJ
authors.lastname: Angrick
authors.forename: B S
authors.initials: BS
authors.lastname: Harr
authors.forename: B
authors.initials: B
authors.lastname: Nersessian
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000382:microbiology / Q000635:transmission*; D004372:Ducks; D010326:Pasteurella Infections / Q000382:microbiology / Q000635:transmission / Q000662:veterinary*; D016979:Pasteurella multocida / Q000145:classification / Q000472:pathogenicity*; D012703:Serotyping