Peer-reviewed veterinary case report
Proventricular dilatation disease associated with avian bornavirus infection in a Citron-crested Cockatoo that was born and hand-reared in Japan.
- Journal:
- The Journal of veterinary medical science
- Year:
- 2011
- Authors:
- Ogawa, Hirohito et al.
- Affiliation:
- Nippon Institute for Biological Science · Japan
- Species:
- bird
Plain-English summary
A 5-month-old female Citron-crested Cockatoo, raised in Japan, sadly died from a condition called proventricular dilatation disease (PDD), which affects the bird's digestive system. When the bird was examined, signs of PDD were found, including swelling in the proventriculus (a part of the stomach) and immune cell buildup in various organs and nerves. Tests showed that the bird was infected with avian bornavirus (ABV), a virus linked to PDD, and this particular strain was identified as one of the common types found around the world. This case is notable because it is the first documented instance of PDD related to ABV infection in Japan. Unfortunately, the treatment options for this condition are limited, and in this case, the outcome was not favorable.
Abstract
A 5-month-old female Citron-crested Cockatoo (Cacatua sulphurea citrinocristata) that was born and hand-reared in Japan died with suspected proventricular dilatation disease (PDD). Macroscopic and microscopic examinations of the bird revealed characteristic features of PDD, i.e., distention of the proventriculus and infiltration of lymphocytes and plasma cells in ganglia of various organs and in central and peripheral nerves. A linkage of this PDD case to infection with avian bornavirus (ABV) was documented by RT-PCR amplification of the virus genomes from the affected bird. Phylogenetic analysis revealed that the ABV identified in this study clustered into the genotype 2, which is one of the dominant ABV genotypes worldwide. To the best of our knowledge, this is the first report of a natural case of PDD associated with ABV infection in Japan.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/21289471/