Similarly, Lin et al. (2007) investigated the effects of supplemental
exogenous enzymes (protease, β-glucanase and xylanase) at a dose of
1.0 and 1.5 g kg−1 on growth performance of juvenile hybrid tilapia
(Oreochromis niloticus × Oreochromis aureus) fed diets with plantbased
feedstuffs (soybean, rapeseed and cottonseed meals).