Overview
Alam et al. tested broiler feed and meat for antibiotic residues, aflatoxin, and heavy metals in Bangladesh. The metal findings are direct poultry occurrence evidence, with a notable caveat: in meat, Cd and Cr were detected in only one of sixty samples, while lead was not detected.
Key numbers
For feed (n=94), all samples were positive for Cd, Pb, and Cr. Mean concentrations were Cd 0.04 mg/kg (range 0.01–0.21), Pb 1.28 mg/kg (range 0.03–14.65), and Cr 2.55 mg/kg (range 0.05–49.22), all reported on a wet-as-sold feed basis. The maximum Pb of 14.65 mg/kg is roughly three times the EU 2003 Undesirable Substances in Feed MRL of 5 mg/kg; the authors note no EU MRL for Cr in feed. Out of 60 broiler meat samples, one sample was positive for Cd at 56.41 mg/kg and Cr at 14.44 mg/kg; Pb was not detected in any meat sample.
Methods (brief)
The study collected 94 broiler feed samples and 60 broiler meat samples from Gazipur and Rajshahi districts. Feed Cd, Pb, and Cr were quantified by ICP-OES/MS following AOAC at SGS, India; meat Cd, Pb, and Cr were quantified by ICP-MS (SGS method S0-IN-MUL-TE-063) at the same lab. Thigh and breast muscles from 5–6-week broilers were used for meat sampling.
Implications
This source is useful for poultry-product gap filling in Bangladesh, but the meat results should be treated carefully because the extreme Cd and Cr values occurred in a single positive meat sample out of sixty. Arsenic was named in the introduction as in-scope for feed testing only, but no As results are reported in any results table; treat the paper as silent on As occurrence in both feed and meat.
Related evidence
Update history
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