The use of probiotics as an alternative strategy to substitute growth promoters added to the diet fed to broilers was evaluated. Three hundred and sixty Cobb 500 broiler chicks were distributed among three groups, each one with 40 broilers and three repetitions. Groups were fed three diets as follows: Group I, 7.75 ppm of virginiamycin was added to the diet; Group II, 2 kg of probiotics/ton of food and Group III, the broilers were fed the same food without any supplementation. At the end of 42 days, weight gain of the control group and the two groups fed supplemented diets was significantly different. Mean weight gain of the group fed diet supplemented with virginiamycin was higher compared to others. Food intake was also statistically different among treatments and probiotic supplemented treatment had the lowest feed intake. Therefore, the treatment supplemented with probiotics displayed the best ratio feed intake per weight gain. This result suggests that probiotics may be used as an alternative strategy to growth promoters added in the diet fed to broilers. KEY-WORDS: Bifidumbacterium bifidum. Broiler chicken. Lactobacillus acidophilus. Streptococcus faecium.