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Fig. 5 | BMC Veterinary Research

Fig. 5

From: Broiler responses to copper levels and sources: growth, tissue mineral content, antioxidant status and mRNA expression of genes involved in lipid and protein metabolism

Fig. 5

Copper 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 minerals

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