At the beginning and the end of the experiment, empty BW (EBW) was estimated from BW using the equation developed for barrows and gilts in the range from 90 to 150 kg BW (Kloareg et al., 2006). Body lipid mass was estimated from BF and BW according to the equation reported by Kloareg et al., 2006. Fat free EBW mass (FFEBW) was computed as EBW minus body lipid mass. Based on the allometric relationships among body protein (BP), and water and ash masses (NRC, 2012), BP (kg) was computed as: 0.1353×FFEBW1.1175. Thereafter, protein (Pr) and lipid (Lr) daily retentions were computed from body mass change over the finishing period.