Means within columns with a common superscript do not differ (P < 0.05). 1 ADG: average daily gain; ADFI: average daily feed intake; FCR: feed conversion ratio. 2The 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).