Analysis of Heavy Metal Content in Chicken Eggs
Kate Graham, Biochemistry
Fish are a rich source of omega-3 fatty acids but can be contaminated with heavy metals. As a potential alternative to fish consumption a common practice in industrial egg production is to enrich grain based chicken feed with fish and fish oil which results in the production of omega-3 enriched eggs. We set out to determine if there is transfer of heavy metals from livestock feed containing menhaden oil to omega-3 enriched eggs. Results from Atomic Absorption spectroscopy show that there is little difference in heavy metal content between the conventional eggs and the omega-3 enriched eggs, yet the feed enriched with menhaden oil had much higher concentrations. This suggests that chickens do not pass heavy metals from the feed to eggs.
Ly, Peter, "Analysis of Heavy Metal Content in Chicken Eggs" (2011). Honors Theses. 126.