A total of 120 finish pigs [(Landrace × Yorkshire) × Duroc; 52.61 ± 2.37 kg] were randomly allotted into three treatments for a 70 d trial to evaluate the growth performance and fecal microbiota counts in finishing pigs. Treatment groups were (i) basal diet (CON), (ii) CON + 0.1% probiotic complex (TRT1), and (iii) CON + 0.2% probiotic complex (TRT2). Each treatment consisted of eight replicate pens with five pigs per pen. The average daily gain and fecal Lactobacillus counts of TRT2 were increased (P < 0.05) compared with CON treatment. The result showed that 0.2% complex probiotic was more effective than 0.1%.