title: Meningoencephalitis in commercial meat turkeys associated with Mycoplasma gallisepticum.
abstract: Mycoplasma gallisepticum (MG) infection was diagnosed in three different flocks of 12-to-16-week-old commercial meat turkeys displaying torticollis and/or opisthotonos. MG was isolated from the brain, air sacs, trachea, and sinus of one bird with neurological signs. Histological examination of brains in all three cases revealed moderate-to-severe encephalitis with lymphoplasmacytic cuffing of vessels, fibrinoid vasculitis, focal parenchymal necrosis, and meningitis. Birds with neurological signs were seropositive for MG by the serum-plate agglutination and hemagglutination-inhibition tests. The encephalitic form of MG has been described previously but is rarely mentioned in the current literature.
authors.affiliation: California Veterinary Diagnostic Laboratory System, University of California, Davis 95616.
authors.forename: R P
authors.initials: RP
authors.lastname: Chin
authors.forename: B M
authors.initials: BM
authors.lastname: Daft
authors.forename: C U
authors.initials: CU
authors.lastname: Meteyer
authors.forename: R
authors.initials: R
authors.lastname: Yamamoto
mesh_terms: D000400:Air Sacs / Q000382:microbiology / Q000473:pathology; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D001426:Bacterial Proteins / Q000032:analysis; D001921:Brain / Q000382:microbiology / Q000473:pathology; D007596:Joints / Q000382:microbiology; D008590:Meningoencephalitis / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D009174:Mycoplasma / Q000145:classification / Q000276:immunology / Q000302:isolation & purification*; D009175:Mycoplasma Infections / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D010256:Paranasal Sinuses / Q000382:microbiology / Q000473:pathology; D011201:Poultry Diseases / Q000382:microbiology / Q000473:pathology*; D014132:Trachea / Q000382:microbiology / Q000473:pathology; D014422:Turkeys
chemical_list: D000907:Antibodies, Bacterial; D001426:Bacterial Proteins