title: [Photosensitization in cattle grazing on pastures of Brahciaria decumbens Stapf infested with Pithomyces chartarum (Berk. & Curt.) M.B. Ellis].
abstract: Aspects of photosensitization in bovines grazing on pastures of Brachiaria decumbens Stapf infested with Pithomyces chartarum (Berk. & Curt.) M.B. Ellis infested all pastures 45(2):117-136, 1978. This paper reports experimental studies on photosensitization in bovines grazing on different pastures of Brachiaria decumbens Stapf in the "Cerrados" region (Planaltina, DF). Climatic conditions, zinc content and occurence of fungi on pastures were investigated. Pithomyces chartarum (Berk. & Curt.) M.B. Ellis infested all pastures examined. Photosensitization was observed in one animal maintained on a pasture of B. decumbens formed with seeds from Australia. Clinical and necropsy data were similar to those related in literature for sporidesmin-intoxicated animals. An isolate of P. chartarum and samples of bovine bile were assayed for sporidesmin presence.
mesh_terms: D000818:Animals; D001646:Bile / Q000032:analysis; D001835:Body Weight; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D002855:Chromatography, Thin Layer; D002980:Climate; D008297:Male; D003904:Mitosporic Fungi / Q000145:classification / Q000472:pathogenicity*; D010787:Photosensitivity Disorders / Q000209:etiology / Q000662:veterinary*; D006109:Poaceae; D013056:Spectrophotometry, Ultraviolet; D013173:Sporidesmins / Q000032:analysis; D015032:Zinc / Q000032:analysis
chemical_list: D013173:Sporidesmins; D015032:Zinc
vernacular_title: Aspectos da fotossensibilização em bovinos em pastagens de Brachiaria decumbens Stapf infestadas por Pithomyces chartarum (Berk. & Curt.) M.B. Ellis.