Neurological diseases in cattle caused by plants and mycotoxins in Santa Catarina state, Brazil
| Autor: | Ademar Mazaki Mori, Daiane Ogliari, Raissa M. Morais, Nathalia S. Wicpolt, Valter Surkamp, Franciéli A. Molossi, Aldo Gava |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Veterinary medicine
040301 veterinary sciences Ipomoea 0403 veterinary science Ipomoea triloba Santa Catarina chemistry.chemical_compound mycotoxins Mycotoxin neuropathology lcsh:Veterinary medicine General Veterinary biology 0402 animal and dairy science Outbreak diseases of cattle 04 agricultural and veterinary sciences plant poisoning biology.organism_classification Claviceps purpurea 040201 dairy & animal science Plant Poisoning chemistry cattle Etiology toxicoses lcsh:SF600-1100 Phalaris angusta Brazil Neurological diseases |
| Zdroj: | Pesquisa Veterinária Brasileira, Vol 39, Iss 4, Pp 244-250 (2019) Pesquisa Veterinária Brasileira v.39 n.4 2019 Pesquisa Veterinária Brasileira Colégio Brasileiro de Patologia Animal (CBPA) instacron:EMBRAPA |
| ISSN: | 1678-5150 |
| Popis: | This study described the epidemiological and clinical-pathological aspects of 25 outbreaks of neurological diseases in cattle caused by plants and mycotoxins in Santa Catarina state. Six of them were due to Sida carpinifolia poisoning, five to Solanum fastigiatum, five to Phalaris angusta, three to Claviceps paspali, three to Claviceps purpurea, and three outbreaks were of unknown etiology. The clinical signs observed in the affected cattle were mild to severe and characterized by generalized muscle tremors, incoordination, hypermetria, wide-based stance, intentional head tremors, dull staring eyes, and frequent ear twitching, with convulsions in some cases. At necropsy, lesions were observed only for P. angusta poisoning, characterized by gray-greenish discoloration in thalamus and midbrain. Microscopically, rarefaction and/or disappearance of Purkinje neurons with substitution by Bergmann cells were observed for S. carpinifolia and S. fastigiatum poisoning. For P. angusta poisoning, thin granular brown-yellowish pigment was observed in the cytoplasm of some neurons. Gross and microscopic findings were not observed in three outbreaks of tremorgenic disease of unknown etiology. Experiments conducted with leaves, flowers and seeds of Ipomoea indivisa and Ipomoea triloba, as well as with maize and soybean residues contaminated with Ipomoea spp. did not reproduced clinical signs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|