An experiment was conducted to determine whether sugar could successfully be incorporated into feeds for ducklings in the period 0 to 7 weeks of age. Five dietary treatments, with sugar content ranging from 0 to 400 g kg^-1 were fed to 400 ducklings, sexes separate, of the Cherry Valley strain. There were four replications of each treatment. The results showed no deleterious effects (P ≤ 0,05) of sugar on live mass gain, feed conversion efficiency or carcass composition over the entire range of levels of inclusion.