Physical contaminationA wide range of organic and inorganic compounds may occur in feed material, including pesticides, industrial pollutants, radionuclitides and heavy metals. Although pesticides are potentially toxic to poultry, the primary focus of concern centres on residues in poultry products destined for human consumption. Dioxins and polychlorinated biphenyl’s (PCBs) are examples of industrial pollutants that may contaminate feeds, particularly herbage. In 1999, dioxin-contaminated animal fat was unintentionally added to animal feeds destined for Belgian, French and Dutch farms. Increased levels of dioxins were found in meat products and eggs from these farms.
It is important that the ingredients are scanned for such compounds in order to prevent appearance in feed material . An adequate tracking and tracing system is important to control the suppliers of the ingredients.