Vol. 11, Special Issue 1 (2026)

Heavy metal contamination of animal feeds is a food safety concern that is increasing because it negatively affects the health of animals, the production and human health via the food chain. Entry of heavy metals into feed resources from natural and anthropogenic sources such as industrial effluents, wastewater irrigation, agrochemicals and contaminated feed ingredients. While trace elements such as zinc, copper and chromium are necessary for physiological functions but excessive consumption can lead to toxicity. Non-essential metals such as cadmium, lead, mercury and arsenic in particular are particularly dangerous because of their toxicity, bioaccumulation and biomagnification. Chronic exposure depresses the function of organs, mineral balance, immunity and reproduction and residues accumulate primarily in the liver and kidneys. Regulatory enforcement and feed monitoring are essential to provide for animal and public health.