Poppenga R H
University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square, USA.
Vet Clin North Am Food Anim Pract. 2000 Nov;16(3):545-58, viii. doi: 10.1016/s0749-0720(15)30086-4.
Livestock can be exposed to literally thousands of environmental contaminants. Fortunately, most do not cause significant livestock morbidity or mortality and relatively few present significant residue concerns in animal products intended for human consumption. Some environmental contaminants, however, present livestock health or residue concerns. The significance of specific environmental contaminants on livestock health and productivity can change with time and unforeseen threats can emerge as new chemicals or technologies are introduced or new knowledge about health effects of established chemicals emerges.
家畜实际上可能接触到成千上万种环境污染物。幸运的是，大多数污染物不会导致家畜出现严重发病或死亡情况，而且在供人类食用的动物产品中，相对较少的污染物会引起显著的残留问题。然而，某些环境污染物却会引发家畜健康或残留问题。特定环境污染物对家畜健康和生产力的影响可能会随时间而变化，并且随着新化学物质或新技术的引入，或者随着对现有化学物质健康影响的新知识的出现，可能会出现意想不到的威胁。
