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Table 1 Analyzed concentration of copper and trace minerals in experimental diets (as fed basis)

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

Mineral sourcesa Trace mineralsb Copper supplementation in basal dietc (mg/kg)
0 4 8 12 16
Organic Cu 1.18 3.42 8.97 11.9 15.5
Fe 112 116 112 111 111
Mn 63.0 64.0 61.0 64.0 65.0
Zn 49.0 48.0 50.0 48.0 48.0
Inorganic Cu 1.30 6.09 9.23 13.3 17.3
Fe 93.0 101 122 124 110
Mn 57.0 62.0 62.0 66.0 58.0
Zn 44.0 43.0 39.0 40.0 49.0
  1. aOrganic: copper proteinate (CuPro) and organic trace minerals; Inorganic: copper sulphate (CuSO4.5H2O) and inorganic trace minerals
  2. bValue determined by analysis. Each value based on 10 replicates
  3. cCopper supplementation levels were obtained by adding 0; 4; 8; 12; and 16 mg Cu/kg diet to a semi-purified diet containing 1.32 mg Cu/kg