Farhangi and Carter (2007) determined the effect of enzyme supplementation
(Energex™ [hemicellulases], Bio-Feed™ [protease] and
Alpha galactosidase™ [α-galactosidase]) of dehulled lupin-based diets
on rainbow trout performance. The supplemented enzymes did not
improveweight gain of rainbowtrout fed lupin-based diets, as reported
previously by Ogunkoya et al. (2006) with soybean meal-based diets.
However, the mixed enzyme significantly improved protein efficiency
ratio. These authors also suggested that enzyme supplementation studies
should be carried out when animals are under restricted feeding
regimes as the beneficial effects of enzyme addition may be hidden by
increased feed intake under an ad libitum feeding regime