The total energy requirement estima

The total energy requirement estimated in the present
study was less than Rabello et al.’s (2006) and
Reyes et al.’s (2012) estimated values (Fig. 3). Genetic
strain, age, housing system, energy intake, and methodology
could explain energy requirement variation
among those studies. Rabello et al. (2006) raised birds
on the floor and used an older genetic strain that was
less efficient than the Ross 708 strain used in the current
study. Reyes et al. (2012) used Cobb 500, which have
heavier BW compared to Ross 708 at the same age