Listeriosis in a cockatiel (Nymphicus hollandicus)

H L Shivaprasad, R. Kokka, R. L. Walker

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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 rodshaped, 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.

Original languageEnglish (US)
Pages (from-to)800-804
Number of pages5
JournalAvian Diseases
Issue number3
StatePublished - Sep 2007


  • Cockatiel
  • Hepatitis
  • Listeria monocytogenes
  • Nymphicus hollandicus

ASJC Scopus subject areas

  • Immunology
  • Cancer Research
  • veterinary(all)


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