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      Intoxicação espontânea e experimental por Brachiaria radicans (tanner-grass) em bovinos Translated title: Natural and experimental poisoning by Brachiaria radicans (tanner grass) in cattle

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          Abstract

          Brachiaria radicans (tanner-grass,) cresce bem em solos úmidos. Em Santa Catarina é encontrada principalmente nas regiões dos vales dos rios Tubarão e Itajaí. Quando ingerida em grandes quantidades pelos bovinos induz anemia hemolítica, hemoglobinúria, diarreia e pode evoluir para a morte. O objetivo deste trabalho foi avaliar os dados epidemiológicos e clínico-patológicos causados por B. radicans em bovinos. A planta foi administrada a 12 bovinos em doses de 50-100% da dieta. Os animais que receberam uma dieta que consistia de 100% da planta, originária de solos turfosos, mostraram hemoglobinúria, diarreia, mucosas vermelho-escuras e recuperação após suspensão da ingestão da planta. Exames de sangue e urina revelaram anemia, hemoglobinúria e proteinúria. A histopatologia de material coletado de bovinos que morreram pela doença espontânea, revelou necrose hepática coagulativa e paracentral e nefrose hemoglobinúrica. B. radicans mostrou ser tóxica para bovinos somente quando cresce em solos férteis e se consistir de 100% da dieta.

          Translated abstract

          Brachiaria radicans is a grass that grows well on humid soils. In Santa Catarina, it is found mainly in the valleys of the Tubarão and Itajaí rivers. When eaten by cattle in large amounts induces hemolytic anemia, hemoglobinuria, diarrhea and even death. The objective of this study was to evaluate epidemiologic, clinical and pathological data of the intoxication caused by B. radicans in cattle. The plant was administered to 12 cattle in doses of 50-100% of the diet. The animals that received 100% of B. radicans, grown on peaty soils, showed hemoglobinuria, diarrhea and dark red mucous membranes; they recovered when ingestion of the grass was discontinued. Blood and urine tests revealed anemia, hemoglobinuria and proteinuria. Histopathology of organs collected from cattle that died from spontaneous poisoning revealed hepatic centrolobular and paracentralr coagulative necrosis and hemoglobinuric nephrosis. B. radicans proved toxic for cattle only when it grows on fertile soils and is ingested as 100% of the diet.

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          Plantas daninhas do Brasil

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            Plantas infestantes e nocivas

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              Anemia hemolítica em bovinos alimentados com Brachiaria sp. (Tanner Grass)

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                pvb
                Pesquisa Veterinária Brasileira
                Pesq. Vet. Bras.
                Colégio Brasileiro de Patologia Animal - CBPA (Rio de Janeiro )
                1678-5150
                March 2010
                : 30
                : 3
                : 255-259
                Affiliations
                [1 ] Universidade do Estado de Santa Catarina Brazil
                [2 ] Universidade do Estado de Santa Catarina Brazil
                Article
                S0100-736X2010000300012
                10.1590/S0100-736X2010000300012
                4f5430dd-1ec4-4495-a6fa-bc7fcd15d698

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-736X&lng=en
                Categories
                VETERINARY SCIENCES

                General veterinary medicine
                Poisonous plants,Brachiaria radicans,Gramineae,plant poisoning,cattle,hemolytic anemia,plantas tóxicas,brachiaria radicans,gramineae,intoxicação por planta,bovinos,anemia hemolítica

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