Pathogenic effects on domestic poultry of a Mycoplasma gallisepticum strain isolated from a wild house finch

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. M...

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Bibliographic Details
Published in:Avian diseases 1999-10, Vol.43 (4), p.640-648
Main Authors: O'Connor, R.J, Turner, K.S, Sander, J.E, Kleven, S.H, Brown, T.P, Gomez, L. Jr, Cline, J.L
Format: Article
Language:English
Subjects:
Air Sacs - pathology
Animals
Antibodies
Antigens
Chickens
clinical aspects
Enzyme linked immunosorbent assay
Finches
Fringillidae
immunology
isolation
Lesions
Mycoplasma
Mycoplasma - isolation & purification
Mycoplasma - pathogenicity
Mycoplasma gallisepticum
Mycoplasma Infections - pathology
Mycoplasma Infections - transmission
Mycoplasma Infections - veterinary
pathogenicity
Poultry Diseases - microbiology
Poultry Diseases - pathology
Poultry Diseases - transmission
Pulmonary alveoli
Songbirds - microbiology
Species Specificity
strains
Trachea - pathology
Turkeys
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Summary: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.
ISSN:0005-2086
1938-4351
DOI:10.2307/1592732