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The three intermediate nPP (IntnPP) groups had been provided diets with 0.40%, 0.35% and 0.30% nPP according to the development period and were submitted to three nutritional remedies unsupplemented; supplemented with 500 FTU/kg diet of an Aspergillus niger phytase (IntnPP_fp) and supplemented with 500 FTU/kg diet of an Escherichia coli phytase (IntnPP_bp). The three reduced nPP groups given diets included 0.30%, 0.25% and 0.20% nPP and were submitted into the same diet treatments than IntnPP to