Optimizing broiler growth performance through balanced net energy, standard ileal digestible lysine, and amylose/amylopectin ratios: a Box-Behnken response surface approach.

Regression models for some of the data (15-20 d and 15-35 d BWG, and FI at all growth stages) did not reach statistical significance ( P > 0.05) and were therefore excluded from further analysis and graphical interpretation.

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