Método de controle das intoxicações por plantas que causam morte súbita associada ao exercício - revisão de literatura.

Abstract

The present work have as objective revises the prophylaxis and methods of control of the intoxications for plants belonging to the group that cause sudden death when associated to the physical exercise, as well the mechanism of action of poisonous beginning, clinical signs, economical impacts, pathological alterations and epidemiology. The intoxications for plants in cattle animals have matter importance in areas where the handling of the pasturing is made in an extensive way. Among the herbivores, the ruminant ones are the most susceptible. In Brazil, half of the deaths for intoxication for plants is caused by the ingestion of plants that contains fluoroacetato of sodium (MFA) these cause sudden death when associated to the physical exercise. MFA acts at cellular level, interfering in the cycle of Krebs, impeding the production of ATP and accumulating citrate intracellular. This intoxication happens commonly in bovine and with smaller frequency in goats and sheeps. The symptomatology is sharp, the death befalls when it trains after the ingestion of the plant, occasions this, promoted by the largest need of the contribution of ATP, tends as cause of the death the sharp heart inadequacy. In the necropsya, it is described as main histological alteration with form of degeneration hydropic-vacuolar degeneration of the distal convoluted uriniferous tubule and marked nuclear pkynosis of groups delimited of cells. Several alternative methods exist for the control of these intoxications, all of them with their limitations, but they are already determined and they can be used for such purpose. However it is necessary the accomplishment of more researches to perfect and to define the death has as inadequacy.