1The birds received a corn-soybean meal basal diet that, with the exception of the control, was supplemented with probiotic Primalac® (PP), probiotic Bactocell® (PB), prebiotic Fermacto® (Pre), probiotic Bactocell® + prebiotic Fermacto® (PBPre) and probiotic Primalac® + prebiotic Fermacto® (PPPre).