Fig. 5From: Broiler responses to copper levels and sources: growth, tissue mineral content, antioxidant status and mRNA expression of genes involved in lipid and protein metabolismCopper levels and sources on mRNA expression of CuZnSOD gene in broiler breast muscle. By the unfolding of the source vs copper level interaction: (A) Cu levels in mg/kg within the INO and ORG source, (B) Sources within each copper level in mg/kg. Mean values without equal letters (a-b) differ between groups (P < 0.05). CuZnSOD, copper-zinc superoxide dismutase; INO, source of inorganic trace minerals; ORG, source of organic trace mineralsBack to article page