Meningoencephalitis in commercial meat turkeys associated with Mycoplasma gallisepticum. |
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Authors: | R P Chin B M Daft C U Meteyer R Yamamoto |
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Institution: | California Veterinary Diagnostic Laboratory System, University of California, Davis 95616. |
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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. |
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