Preliminary characterization of a pleomorphic gram-negative rod associated with avian respiratory disease.

B. R. Charlton, S. E. Channing-Santiago, A. A. Bickford, C. J. Cardona, R. P. Chin, G. L. Cooper, R. Droual, J. S. Jeffrey, C. U. Meteyer, H. L. Shivaprasad

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Abstract

An unidentified, pleomorphic, gram-negative rod (PGNR) bacterium has been isolated from domestic fowl with respiratory disease. The PGNR was isolated in 5% of turkey accessions and 3% of chicken accessions, primarily from the respiratory tract. Preliminary characterization of this organism included reviewing accession records, conducting cultural and biochemical tests, and analyzing cellular fatty acids. The PGNR was also compared with other bacteria capable of inhabiting the avian respiratory system. Biochemical and cellular fatty acid analysis failed to identify the organism, however all 14 isolates were similar.

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