Addition of Calcium to Layer Chicken Ration at 90 Weeks

This study aims todetermine the productivity of Isa Brown aged 90 weeks who were given additional calcium shellfish in commercial rations. The design used in this study was a Completely Randomized Design (CRD) with four treatments , 5 replications and each repetition using 10 birds. The treatments were : Po: comercial rations without added calcium shellfish, P1,P2 and P3 : commercial rations added 1%,2% and 3% calcium shellfish.The variables observed in this study were: performance, egg production and egg quality of Isa Brown chicken .