An Overview of Poisonous Plants and Their Effects on Animal Husbandry in the United States

Poisonous plants have influence over the development of animal husbandry and people's edibles safety all over the world,in some regions,especially in the pastoral areas,serious animals poisoning hazards occurred frequently,which caused the death of livestock and resulted serious damage to animal husbandry.Meanwhile,the directly increased breed cost has dampened the enthusiasm of farmers for raising livestock.For the moment,the advanced countries,such as USA,had made some progress in research of the biological,ecological,toxicology characteristics of poisonous plants as well as in establishment of the measures of prevention and control of poisoning hazards.However,research of comprehensive utilization of poisonous plants has been started late in China,as in its initial stage,there is a still a wide gap in the quantity and quality of research as compared with the developed countries.This paper briefly states the history and present of geographic distribution of American poisonous plants,demonstrates the species of poisonous plants as well as its damage to animal husbandry,points out some preventive strategies.