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1 September 2007 Listeriosis in a Cockatiel (Nymphicus Hollandicus)
H. L. Shivaprasad, R. Kokka, R. L. Walker
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Listeriosis was diagnosed in a 4-yr-old female cockatiel (Nymphicus hollandicus) that died after exhibiting clinical signs that included a fluffed-up appearance, weakness, and loss of weight of several days duration. Grossly, the bird was moderately emaciated, and the liver and spleen were enlarged. Microscopically, there was mild-to-moderate inflammation associated with rod-shaped, gram-positive bacteria in the liver, spleen, kidneys, adrenal glands, bone marrow, and esophagus. Listeria monocytogenes was isolated from the liver, trachea, and intestine. The isolate was identified as type 1 by agglutination with specific antisera, and it further identified as belonging to serovar group 1/2a, 3a by multiplex polymerase chain reaction assay. Listeria monocytogenes also was detected in affected tissues by immunohistochemistry.

H. L. Shivaprasad, R. Kokka, and R. L. Walker "Listeriosis in a Cockatiel (Nymphicus Hollandicus)," Avian Diseases 51(3), 800-804, (1 September 2007).[800:LIACNH]2.0.CO;2
Received: 16 January 2007; Accepted: 1 March 2007; Published: 1 September 2007
Listeria monocytogenes
Nymphicus hollandicus
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