Poisoning by organophosphate in cattle in southern Brazil

Pesquisa Veterinária Brasileira

Pierezan, Felipe²  Barros, Claudio S.L¹  Oliveira-Filho, José C²  Rissi, Daniel R²  Carmo, Priscila M.S²  Tochetto, Camila²  Lucena, Ricardo B² 

[1] UFSM, Santa Maria;Universidade Federal de Santa Maria (UFSM), Santa Maria, Brasil

关键词: Diseases of cattle;    toxicoses;    neuropathology;    organophosphate poisoning;    phorate poisoning.;   

DOI  :  10.1590/S0100-736X2010001000001

来源: Colegio Brasileiro de Patologia Animal-CBPA

【 摘 要 】

An outbreak of organophosphate (ORF) poisoning in cattle occurred in the central-midwestern region of Rio Grande do Sul, Brazil. The water available for 49 cattle was contaminated with ORF and carbamate (CM). Twenty cows died after a clinical course that lasted for few hours. The classical clinical signs of over stimulation of the parasympathetic nervous system were observed, including motor incoordination, aggressiveness, drooling, muscle tremors and, on occasion, diarrhea. Significant morphological changes were not observed at necropsy or at histopathological examination. ORF e CM were detected by thin layer chromatography in tissue samples of two affected cattle and in a sample from the water consumed by the affected cattle. Additionally, two other water samples accessed by the affected cattle were positive for ORF. A quantitative analysis carried out by gas chromatography in the abomasum contents of an affected cow revealed 0.93µg/g of mancozebe (CM) and 0.07µg/g of phorate (ORF).INDEX

【 授权许可】

CC BY-NC