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  • Title: Pathogenic effects on domestic poultry of a mycoplasma gallisepticum strain isolated from a wild house finch.
    Author: O'Connor RJ, Turner KS, Sander JE, Kleven SH, Brown TP, Gómez L, Cline JL.
    Journal: Avian Dis; 1999; 43(4):640-8. PubMed ID: 10611979.
    Abstract:
    Mycoplasma gallisepticum (MG) has been isolated from wild house finches. The pathogenic effects of MG finch strain (K4058) and MG R-strain were compared after exposure of chickens and turkeys. Gross and histologic lesions, reisolation of the organism, serology, and clinical disease were evaluated. Milder histologic and gross lesions, in addition to lower serologic titers, occurred in birds inoculated with the finch strain. Mortality, concurrent with clinical and gross respiratory signs and lesions, was observed only in chickens challenged with R-strain. Both the MG finch strain and MG R-strain were recovered from the respective challenge groups at 14 and 28 days postexposure. The results show that MG isolated from wild house finches may infect domestic poultry species but causes only mild disease and is less virulent than MG R-strain. Commercial enzyme-linked immunosorbent assay kits best detected the serologic response of chickens and turkeys to the MG finch strain.
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