RESUMO
Polioencephalomalacia developed in 27 of 225 cattle grazing on 486 hectares of dry, short, grama grass pasture. Chemicals in drinking water, toxin from nitrate-utilizing ruminal bacteria, and documented poisonous plants were considered as etiologic agents. Attempts to reproduce the disease by injecting mice and dosing sheep with broth filtrate from nitrate-utilizing ruminal bacteria were not successful. Mushrooms collected from the pasture and fed to a cow did not reproduce the disease.
Assuntos
Doenças dos Bovinos/etiologia , Encefalomalacia/veterinária , Animais , Bacillus cereus/metabolismo , Toxinas Bacterianas/toxicidade , Encéfalo/patologia , Bovinos , Doenças dos Bovinos/patologia , Encefalomalacia/etiologia , Encefalomalacia/patologia , Feminino , Masculino , Camundongos , Intoxicação por Plantas/etiologia , Intoxicação por Plantas/patologia , Intoxicação por Plantas/veterinária , Água/análiseRESUMO
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