Korean Journal of Veterinary Research 2010;50(1):59-62.
Mycobacterium avium subsp. avium infection in a lineolated parakeet (Bolborhynchus lineola)
So-Young Lee1, Jong-Hyun Yoo2, Jang-Won Yoon3, Dae-Young Kim4, Ho-Seong Cho4, Chul Park5, Hee-Myung Park2
1Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University
2Department of Veterinary Internal Medicine, College of Veterinary Medicine, and BK21 Basic & Diagnostic Veterinary Specialist Program for Animal Diseases, Konkuk University
3Department of Microbiology and Research Institute for Translational System Biomics, Chung-Ang University College of Medicine
4Veterinary Medicine Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri
5Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California
A 2-year-old lineolated parakeet (Bolborhynchus lineola) was presented with abdominal distention and respiratory distress for two months. The bird was poorly fleshed and the liver was enlarged on coelomic palpation. Plain and contrast radiographic examinations exhibited hepatomegaly and distended intestinal loop, which compromised the air sacs. Multifocal hyperechogenecity was observed in the liver on ultrasonography. Postmortem gross examination revealed hepatomegaly with numerous pinpoint tan foci in the hepatic parenchyma and distended small intestine filled with adult ascarids. Microscopically, granulomatous hepatitis and enteritis infected by intrahistiocytic acid-fast bacilli were evident. Polymerase chain reaction indicated that the acid-fast bacilli were Mycobacterium avium subsp. avium.
Key Words: avian mycobacteriosis, Mycobacterium avium subsp. avium, parakeet

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