title: Concomitant Ornithobacterium rhinotracheale and Newcastle disease infection in broilers in South Africa.
abstract: Ornithobacterium rhinotracheale was first isolated from broilers in South Africa in 1991. The importance of O. rhinotracheale infections has been established, with growth suppression, respiratory symptoms, and arthritis commonly seen as complications. Dual infection with Newcastle disease and O. rhinotracheale in 28-day-old broilers led to more severe respiratory lesions and higher mortality rates than in birds with only Newcastle disease. It was concluded that the pathogenicity of Newcastle disease virus was enhanced when occurring in combination with O. rhinotracheale. Also of interest was the first isolation of O. rhinotracheale from the liver.
authors.affiliation: Department of Poultry Diseases, Faculty of Veterinary Science, University of Pretoria, South Africa.
authors.forename: A F
authors.initials: AF
authors.lastname: Travers
mesh_terms: D000818:Animals; D002645:Chickens; D004196:Disease Outbreaks; D016905:Gram-Negative Bacterial Infections / Q000150:complications / Q000453:epidemiology / Q000662:veterinary*; D001351:Infectious bronchitis virus / Q000276:immunology; D007243:Infectious bursal disease virus / Q000276:immunology; D009017:Morbidity; D009521:Newcastle Disease / Q000150:complications / Q000453:epidemiology* / Q000401:mortality; D011201:Poultry Diseases; D012141:Respiratory Tract Infections / Q000150:complications / Q000453:epidemiology* / Q000401:mortality; D013019:South Africa / Q000453:epidemiology; D014765:Viral Vaccines
chemical_list: D014765:Viral Vaccines