title: Toxigenic type D Pasteurella multocida in New South Wales pig herds--prevalence and factors associated with infection.
abstract: Between March and July 1987, a study was undertaken to determine the prevalence of and factors associated with toxigenic type D Pasteurella multocida infection in New South Wales pig herds. Toxigenic type D P. multocida was isolated from the nasal cavities of pigs in one (2%) of 50 randomly selected herds. Toxigenic isolates were also recovered from 2 (8%) of a separate group of 25 herds that had purchased pigs from a known infected piggery in South Australia (herd SA). Snout abnormalities were present in 9.4%, 3.2% and 1.8% of grower pigs in the 3 affected herds. Isolation of toxigenic P. multocida was significantly associated (p less than 0.0001) with the occurrence of clinically affected pigs in the herd. Purchase of at least 5 pigs from herd SA was associated with an elevated risk (p less than 0.05) of isolation of toxigenic P. multocida.
authors.affiliation: New South Wales Department of Agriculture and Fisheries, Agricultural Research and Veterinary Centre, Orange.
authors.forename: I A
authors.initials: IA
authors.lastname: Gardner
authors.forename: G J
authors.initials: GJ
authors.lastname: Eamens
authors.forename: M J
authors.initials: MJ
authors.lastname: Turner
authors.forename: C L
authors.initials: CL
authors.lastname: Hornitzky
mesh_terms: D000818:Animals; D001427:Bacterial Toxins / Q000302:isolation & purification; D005260:Female; D009517:New South Wales; D010325:Pasteurella / Q000302:isolation & purification; D010326:Pasteurella Infections / Q000453:epidemiology / Q000662:veterinary*; D012222:Rhinitis, Atrophic / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D012307:Risk Factors; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology / Q000382:microbiology*
chemical_list: D001427:Bacterial Toxins