Estudos experimentais com plantas cianogênicas em bovinos



Título del documento: Estudos experimentais com plantas cianogênicas em bovinos
Revista: Pesquisa veterinaria brasileira
Base de datos: PERIÓDICA
Número de sistema: 000301408
ISSN: 0100-736X
Autores: 1

2
3
4
Instituciones: 1Universidade Federal Rural do Rio de Janeiro, Departamento de Nutricao Animal e Pastagem, Seropedica, Rio de Janeiro. Brasil
2Universidade Federal Rural do Rio de Janeiro, Departamento de Epidemiologia e Saude Publica, Seropedica, Rio de Janeiro. Brasil
3Universidade Federal Rural do Rio de Janeiro, Hospital Veterinario, Seropedica, Rio de Janeiro. Brasil
4Universidade Federal Rural de Pernambuco, Recife, Pernambuco. Brasil
Año:
Periodo: Abr-Jun
Volumen: 19
Número: 2
Paginación: 84-90
País: Brasil
Idioma: Portugués
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés These studies were performed in order to obtain additional data on Brazilian cyanogenic plants. Three animals, severely poisoned by Piptadenia macrocarpa (=Anadenanthera macrocarpa), recovered readily when treated intravenously with 660 mg/kg of sodium hyposulphite (sodium thiosulphate) plus 30 g dissolved in water given by stomach tube. Fresh leaves (in the sprouting phase), fed in October, were more poisonous than mature leaves fed in March. Dried leaves slowly lost their toxicity within a few months. Both the fresh and dried leaves of Piptadenia viridiflora showed similar toxic effects to P. macrocarpa. As this was also readily reversed by the administration of sodium hyposulphite in two animals, P. viridiflora can be included in the group of toxic cyanogenic plants. Four animals severely poisoned by the leaves of Holocalyx glaziovii (=Holocalyx balansae) also recovered readily after receiving sodium hyposulphite. The dried leaves of H. glaziovii also slowly lost their toxicity within a few months. Two animals severely poisoned by the leaves of Manihot glaziovii also recovered readily with sodium hyposulphite. However, dried leaves were no longer poisonous. The leaves of H. glaziovii and of M. glaziovii always gave a quick (in less than 5 minutes) positive reaction to the picrate test for cyanide. Those of P. macrocarpa and P. viridiflora reacted more slowly (after 15 and 10 to 30 minutes respectively) when in the sprouting stage, and even slower when the leaves were mature. The slower reactions seen with Piptadenia spp indicate
Disciplinas: Medicina veterinaria y zootecnia,
Biología
Palabras clave: Bovinos,
Nutrición animal,
Botánica,
Plantas tóxicas,
Cianogénesis,
Piptadenia macrocarpa,
Anadenanthera macrocarpa,
Piptadenia viridiflora,
Holocalyx glaziovii,
Holocalyx balansae,
Manihot glaziovii
Keyword: Veterinary medicine and animal husbandry,
Biology,
Animal nutrition,
Bovines,
Botany,
Toxic plants,
Cyanogenesis,
Piptadenia macrocarpa,
Anadenanthera macrocarpa,
Piptadenia viridiflora,
Holocalyx glaziovii,
Holocalyx balansae,
Manihot glaziovii
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