observed that, the younger broiler chicken have small size and less number of feather, so the all ingested Hg via feed may translocated to the muscles tissues. It was reported in literature that broiler chicks fed fish meal contain Hg in two levels (Hg, 0.30 and 0.64 mg/kg) showed accumulation of Hg in breast muscles corresponds to 0.11 and 0.34 mg/kg, respectively (Dorea, 2006). Our results are consistent with other investigation that some tissues of animals appear to have more affinity for Hg than others. Englender et al. found that breast muscle accumulated more Hg than did leg muscle (Englender et al., 1980). A risk assessment of toxic contaminants in chicken feed prepared from small sized sea fish and other gradients may indicate that food safety objectives should be applied to these farm feeds to protect the human health.