Abstract

VELAZQUEZ-ORDONEZ, Valente et al. Cartilaginous metaplasia in the right atrium of sheep, attributable to the consumption of Trisetum flavescens. Abanico vet [online]. 2021, vol.11, e302.  Epub Oct 11, 2021. ISSN 2448-6132.  https://doi.org/10.21929/abavet2021.22.

The case of a 2.5-year-old sheep sent for diagnostic evaluation is presented. At the necropsy, mucoid degeneration of coronary fat, pleural adhesions, hypostatic congestion, hemoperitoneum, reticulum, rumen, omasum, and abomasum distention were found. The most significant finding was the whitish, hard-to-touch appearance of the right atrium. The atrial sample was decalcified for sectioning and histopathology study. The histology of the section performed revealed: extensive areas of cartilaginous metaplasia, swelling, and undulation of cardiac muscle fibers, fatty infiltration between cardiac fibers, as well as figures compatible with Sarcocystis. The clinical chemistry indicated hyperphosphatemia and hypermagnesemia. According to the process for the sheep diagnostic evaluation, cartilaginous metaplasia of the right atrium, associated with the ingestion of Trisetum flavescens was found. In the different animal species, the probability of progressive poisoning from the consumption of toxic plants is a risk that can occur in any animal production system.

Keywords : cartilaginous metaplasia; atrium; sheep.

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