was used in the statistical analysis. Data on growth
performance, ultrasound measurements and all carcass traitswere analyzed
using the MIXED procedure with the feeding system (T or TMR),
breed (LI and RE) and feeding system × breed as fixed effects, and pen
nested within feeding system × breed and slaughter group as random
effects. Body weight at the start of the trial was used as covariate for
growth performance, and carcass weight and yield data analyses. The
effects of ageing on meat quality traits (instrumental colour, WBSF, PL
and CL) were analyzed by repeated measurement analysis (