Abstract: The experiment was conducted in Chittagong for 35 days long period to find out the performance of broilers fed with different feed additives by using 240 days old COBB-500 broiler chicks. The experimental chicks were reared with proper management including brooding, feeding, watering, housing and maintaining bio-security and data regarding performance were recorded weekly. The cumulative feed intake was the highest forcitric acidgroup (3028.0±1.5 g/bird) which varied significantly (p<0.05) among control (2940.50±5.1 g/bird), antibiotic (3004.75±2.9 g/bird) and probioticsgroup (3015.50±4.8 g/bird) for whole experimental period. Significantly (p<0.05) highest values were found with citric acid in live weight (1791.0±2.1 g/bird) and weight gain (1740.50±3.1 g/bird), followed by (1723.75±3.0 g/bird) and (1673.50±4.1 g/bird) in probiotics, respectively. The best Feed Conversion Ratio (FCR) was found in citric acid group (1.74±0.0) followed by probiotics (1.80±0.0), antibiotic (1.82±0.0) and control group (1.90±0.0). It may be concluded from the experiment that citric acid can be used as a better alternative growth promoter to antibiotics in poultry production.