MDB. To determine the corrected metabolizable energy (AME N ) a method for total collection of excreta with pullets Hy Line was used for 15 weeks. AME N (kcal/kg in MN) were: 3467, 3340, 3217 and 3385kcal/kg and density (kg/m 3 ): 818.61, 698.13, 681.80 and 736.39 for MDA, MDI, MDB and MDT, respectively