Spironucleosis in Australian king parrots (Alisterus scapularis)
| Autor: | A W Gestier, P L Andrew, Adrian Philbey, K E Arzey, R L Reece |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Male
Veterinary medicine Victoria Disease Outbreaks Enteritis Diplomonadida Feces Parrots medicine Animals Intestinal Diseases Parasitic Wasting Spironucleus General Veterinary biology Bird Diseases Outbreak General Medicine biology.organism_classification medicine.disease Feather visual_art visual_art.visual_art_medium Alisterus scapularis Female Queensland Cloaca New South Wales medicine.symptom |
| Zdroj: | Australian Veterinary Journal. 80:154-160 |
| ISSN: | 1751-0813 0005-0423 |
| DOI: | 10.1111/j.1751-0813.2002.tb11381.x |
| Popis: | ObjectiveTo describe a syndrome of wasting, diarrhoea and mortality in Australian king parrots (Alisterus scapularis). DesignField observations and laboratory examinations. Procedure Pathological examinations were performed on 50 Australian king parrots with wasting and diarrhoea. Wet preparations of intestinal contents were examined by light microscopy. Tannins were extracted from acorns (Quercussp) and tested for toxicity in mice. Clinicalsigns and epidemiology A syndrome of wasting, diarrhoea and mortality was observed in wild juvenile Australian king parrots in eastern Australia from 1984 to 2000. Sporadic cases and outbreaks of disease occurred from May to September in New South Wales, the Australian Capital Territory and Victoria. Outbreaks in the Australian Capital Territory in 1990 and 1991 were associated with parrots congregating to feed on acorns. Most affected birds failed to respond to treatment with dimetridazole and died 1 to 14 days after hospitalisation. Selected cases recovered following treatment with metronidazole. PathologyAffected birds were emaciated, with faecal matting of feathers around the cloaca and yellow-green fluid, foamy intestinal contents. Abundant motile Spironucleus trophozoites were observed in wet preparations of faeces of clinically affected birds and intestinal contents of birds examined within 1 h of death. Protozoa were detected histologically in crypts of Lieberkuhn in the intestine in association with exudation of mucus (catarrhal enteritis) or lymphoplasmacytic enteritis. ToxicologyTannin extracts from acorns induced periacinar hepatic necrosis in mice. ConclusionWasting, diarrhoea and mortality in wild juvenile Australian king parrots were associated with Spironucleuslike protozoa in the intestine. Acorns were not considered to be the cause of the syndrome. |
| Databáze: | OpenAIRE |
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