Using adapted methods for balanced experiments with waterfowl, the apparent (AMEn-0) and the true (TMEn-0) metabolizable energy of hull-less barley have been established. Despite the lower content of crude fi ber, the energy values were similar to the common barley (Hordeum sativa L.). The AMEn-0 and the TMEn-0 of the forage for Muscovy ducks were 12.29 MJ/kg DM and 13.28 MJ/kg DM, and the coeffi cients of the gross energy transformation - 68.97 and 74.52, respectively.
