The contents of Pb, As, Cd, Cr, mould fungus and bacteria were within the limit of safety.Therefore, P. americana L. could potentially be used as a material for high quality feed.

• 主要卫生指标含量均低于饲料卫生标准中的安全限量，表明美洲大蠊可作为一种优质的功能性蛋白饲料。