Helvio, da Cruz Ferreira Júnior, Diego Ladeira, da Silva, Bruno Reis, de Carvalho, Haniel Cedraz, de Oliveira, Jorge, Cunha Lima Muniz, Warley, Junior Alves, James, Eugene Pettigrew, Simone, Eliza Facione Guimarães, Gabriel, da Silva Viana, and Melissa Izabel, Hannas
Background Five hundred 8-d old male broilers Cobb500 were randomly allotted into 10 treatments in factorial arrangement with 5 Cu levels (0, 4, 8, 12, and 16 mg/kg), and 2 sources (Cu proteinate, CuPro and Cu sulphate, CuSO4.5H2O) for a 10-d-experiment. Results Feed conversion ratio (FCR) was better (P P P P P = 0.07) phosphorus (P) and copper in tibia. Manganese and zinc were higher (P P P P P P = 0.08) in broilers fed CuSO4.5H2O. Copper levels linearly increased (P P P Conclusions CuPro showed beneficial effects on feed conversion and bone mineralization. Organic and inorganic Cu requirements are 9.87 and 8.84 mg Cu/kg, respectively.