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An outbreak of acute aflatoxicosis on a chinchilla (Chinchilla lanigera) farm in Argentina

An outbreak of acute aflatoxicosis on a chinchilla (Chinchilla lanigera) farm in Argentina

Journal of Veterinary Diagnostic Investigation: Official Publication of the American Association of Veterinary Laboratory Diagnosticians Inc 20(6): 853-856

ISSN/ISBN: 1040-6387

PMID: 18987247

DOI: 10.1177/104063870802000629

Chinchillas (Chinehilla lanigera) are known to be very sensitive to aflatoxins, and often a large number of animals die if toxicosis occurs. An outbreak of acute aflatoxicosis on a chinchilla farm in Argentina is described in the present study. A commercial feed suspected of causing the death of 200 animals was sampled. Livers from 9 dead chinchillas were analyzed for their macroscopic and microscopic characteristics via necropsy and histopathology. Aflatoxins B(1), B(2), G(1), and G(2) were determined, by thin layer chromatography, to be in the feed. Macroscopic inspection of livers revealed general enlargement, pale-yellowish coloration, hypertrophy, rounded borders, and increased friability. Size and color were remarkably different from a healthy organ. Histopathologic analyses of hepatic parenchyma showed severe, diffuse cytoplasmic vacuolation of hepatocytes. Sudan III staining confirmed the presence of lipid within the vacuoles. The feed was positive for aflatoxin B(1) in quantities that exceeded the recommended levels. Histologic lesions were typical of aflatoxin intake. Monitoring feed for mycotoxins is crucial to prevent outbreaks of toxicosis, to improve management practices, and to diminish exposure risk of animals and humans to these harmful toxins.

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Accession: 051503963

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