Authors: ÖZNUR YAZICIOĞLU, AYŞEN BEYAZIT
Abstract: This paper reports the pathological findings of non-suppurative encephalomyelitis associated with a Sarcocystis-like protozoan in a 10-month-old ewe lamb showing neurological signs. The encephalomyelitis was characterized by mild to moderate multifocal perivascular mononuclear cell infiltrations, and randomly scattered glial foci, especially more severe in the thalamus, cerebellum, and pons. A few protozoan meronts were observed within the endothelium of small capillaries in the thalamus, and small numbers of mature tissue cysts, similar to muscle sarcocysts, in sections of the cerebrum and pons. All muscle samples of this lamb had also a severe mixed infection with sarcocysts of S. tenella and S. arieticanis.
Keywords: Sarcocystis, lamb, encephalomyelitis
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