ASSESSMENT OF HEAVY METALS IN CHICKEN FEEDS SOLD IN DELTA STATE, NIGERIA.

A. N. Amitaye, P. Okwagi

Abstract


Four brands (starter, grower, finisher and layer) of three commercial feeds (X, Y and Z) commonly used by poultry farmers in Delta state were analysed for cadmium (Cd), lead (Pb), and chromium (Cr). The feeds were purchased from different markets and retail stores at Agbor, Ughelli and Obiaruku towns in Delta state. The feeds were ashed, digested and subsequently analysed for metal contamination using Atomic Absorption Spectrometer (AAS). The results of the determinations show that feed brand and the type studied were contaminated with Cd, Pb, and Cr with amounts within WHO minimum permissible limits. The concentrations (mg/kg) range of 0.028 ± 0.002 to 0.094 ± 0.002 mg/kg, 0.046 ± 0.005 to 0.161 ± 0.017 mg/kg, and 0.015± 0.003 to 0.081 ± 0.006mg/kg for Cd, Pb, and Cr respectively. These contaminations stem mainly from production line with few amounts due to storage and environmental factors. It is recommended that appropriate measure be taken to forestall metal enrichment of chicken feed stocks.

Keywords: Heavy metals, chicken feeds, contamination


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Chemical Society of Nigeria