(2014) in the same breed, and the lowest one (P b 0.05) was observed
in RE bulls of the TMR group, in agreement with Piedrafita et al.
(2003). Within the same breed, the feeding system has a more pronounced
effect on average daily gain of LI bulls than in RE bulls. These
differences could be explained because the average feed consumption
in the TMR groupwas 7.1% lower than in the T group,which in addition
to the fact that a lower energy content (Table 1) decreased available
energy to the animals fed the TMR, LI bulls also have a higher growth
potential and higher energy requirements are needed to sustain them.