Poisoning by Senecio spp. in cattle in southern Brazil: Favorable conditions and control measures

Karam F. C., Schild A. L. & Mello J.R.B. 2011. [Poisoning by Senecio spp. in cattle in southern Brazil: Favorable conditions and control measures.] Intoxicacao por Senecio spp. em bovinos no Rio Grande do Sul: condicoes ambientais favoraveis e medidas de controle. Pesquisa Veterinaria Brasileira 31(7): 603-609. Instituto de Pesquisas Veterinarias Desiderio Finamor, Fundacao Estadual de Pesquisa Agropecuaria, Estrada do Conde 6000, Eldorado do Sul, RS 92990-000, Brazil. E-mail: fernandockaram@yahoo.com.br The study aimed to review the main aspects of Senecio spp. poisoning in Rio Grande do Sul, sou-thern Brazil, in relation to the pathology, pathogenesis and epidemiology of this important cause of death in cattle in that State. The main climatic and environmental factors that apparently favor the emersion and plant establishment were revised. The occurrence of poisoning, which has increased its frequency in recent years in the state, and possible ways to control the plant, including the correct handling of soil and the use of less susceptible domestic species in invaded areas were also discussed.