This experiment was carried out on 288 broilers from Ross 308 strain with the same initial weight in six treatments. Each treatment had three replicates with eight males and eight females in each replicate in a period of 42 days. The metabolic energy was considered constant in this experiment. The used diets contained low, average and high levels of protein with digestible and total amino acids according to the suggested pattern of Ross 308 broiler strain catalogue. The treatments include T1: Low level of protein with DAA, T2: Average level of protein with DAA T3: High level of protein with DAA, T4: Low level of protein with TAA, T5: Average level of protein with TAA, T6: High level of protein with TAA. During each period of experiment, the characteristics of weight gain, feed intake, feed conversion ratio and production index were measured. Weight gain in finisher and total period was significantly high in T2 group. However, mean feed intake was significantly high in T2 group. Production index was significantly high in T5 in finisher stage while significantly low in T4 in total period. It can be concluded that diets with different levels of protein along with digestible amino acids perform better in production index and parameters consisting of feed intake, feed conversion and weight gain than diets with different levels of protein and total amino acids.