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Pneumotoxicosis in Sheep Caused by Ingestion of Trema Micrantha

2013; SAGE Publishing; Volume: 50; Issue: 5 Linguagem: Inglês

10.1177/0300985813478208

1544-2217

Flademir Wouters, Angélica Terezinha Barth Wouters, Tatiane Terumi Negrão Watanabe, Mauro Pereira Soares, Cláudio Estêvão Farias Cruz, David Driemeier,

Microbial infections and disease research

Trema micrantha, a fast-growing tree distributed throughout the Americas, produces palatable leaves that have been associated with hepatic necrosis and acute death when consumed by livestock. This report describes fatal pulmonary disease of sheep triggered by consumption of Trema micrantha. Affected sheep had severe progressive dyspnea for a few days before death. Subcutaneous and mediastinal emphysema, reddened lungs, interalveolar septal thickening, and diffuse type II pneumocyte proliferation were the main pathological findings. After ingesting 77.5 and 102.5 g/kg (divided in 3 doses, at 30-day intervals) of T. micrantha leaves, 2 additional sheep developed the same condition. These findings indicate that T. micrantha toxicosis should be considered in the differential diagnosis of ovine respiratory disease.