Principais plantas tóxicas em pastagens do Nordeste, com ênfase em Pernambuco

Abstract

The number of plants described as toxic grows more and more. There are currently approximately 130 plant species considered toxic. The presence of toxic plants in production systems can generate losses and know which plants are, morphological characteristics, toxic principles, toxic dose, toxicity level, animals that are affected, as well as preventive actions, are of utmost importance for livestock. To be considered toxic the plant needs to be tested through laboratory experiments and with the animal species in question, as there are many differences in effects caused by plants between animal species. And plants considered toxic, experimentally need to cause some kind of pathology when ingested by animals and occur in natural conditions, so they are considered toxic plants of livestock interest. Objective of this work was to perform a literature review on the main toxic plants of the Northeast, with those occurring in the state in Pernambuco. Toxic plants affect animals in a number of ways, such as gastrointestinal disturbances, central nervous system problems, reproductive system problems, and photosensitization and sudden death. Toxic plants that occur on pastures can cause many losses, including animal death. Knowing these plants is strategic for proper pasture management. The best way to control the occurrence of these plants is to properly manage pastures, with stocking adjustment based on forage mass and definition of grazing frequency based on pasture growth.