The aim of this research was to study the effect of ammoniation on tea waste and its digestibility on cattle feed ratio (In vitro). It was held on animal feed and nutrition, agriculture faculty, Sriwijaya University. Completely randomized design with 3 treatments and 4 replication were used on this study. Treatments were; tea waste ammoniation (PO), 10% tea waste ammoniation + 90% cattle concen…