The research was obtained to define the effect supplementatition of lactid acid bacterium (LAB) on the performance of Arabian chick starter phase. The research was conducted for six weeks at Balai Ternak Unggul Sapi Dwiguna dan Ayam Sembawa Banyuasin. A completely randomized design was used in this research. The treatment were PO (Control/Without LAB), P1 (0,1 ml LAB), P2 (0,2 ml LAB), P3 (0,3 …