The objective of this research was study the effect at commercial feed restriction on performance of 42 day old Broilers. The research was conducted , at Animal Nutrition, faculty at Agriculture, Sriwijaya University, South Sumatera, From February to March 2008. A Completely Randomized Design was used with 4 treatment and 5 replications. The treatments were K0 (control 100%), K1 (97,5%), K2 (95…