Dioxins and polychlorinated byphenyls (PCBs) are groups of compounds that include chemicals that may be carcinogens at low levels of exposure over extended periods of time and may have other types of toxicological effects. Since there are no tolerances or other administrative levels for dioxins in food or feed, the appearance of these compounds in a food or feed supply is of gravest concern.
Now that the origins and consequences of the dioxin crisis are becoming clearer, it has become obvious that the feed manufacturing industry should be subjected to the same rigorous requirements and controls as the food producing sector.