Back fat and loin muscle depth were measured between the third and the fourth last rib of the left side of the carcass, using a CGM device (Capteur Gras-Maigre; EU 97/107/EC, Regulation 3127/94; Font, Furnols & Gispert, 2009). Lean meat content of the carcass was calculated according to the following formula (EU 97/107/EC, Regulation 3127/94): y = 59.90 1.06 x1 + 0.23 x2, with y = estimated lean meat content of the carcass (kg); x1 = backfat depth (mm) and x2 = loin muscle depth (mm). This formula is valid for carcasses weighing between 60 kg and 120 kg, with R2 = 0.74 and RMSE = 1.88.