“…Improvement of weight gain could be explained by an increase (P=0.048) in the DEI. These results were different from those by Stahly and Cromwell (1979), Coelho et al (1987), and Tavares et al (1999) who failed to record any difference in the weight gain of barrows (8-60kg) caused by the energy level. However, Dividich and Noblet (1986), using weaning piglets, evaluated a diet with two levels of DE (3,100 and 3,600 kcal) and proved that a lower dietary energy level led to lower weight gain.…”