At the slaughter line we selected the same numbers of carcasses
from three classes of conformation in the EUROP system (S, E, U; 20 carcasses each) with a similar warm weight (90 ± 5 kg). The EUROP system classifies carcasses according to their lean meat content: S N 60%,
E in the range of 55–60%, and U ranging from 50 to 54.9%.