【Objective】To determine the apparent digestibility of dry matter,crude protein,crude lipid and crude fiber of dried or fermented brewer's grains in grass carp( Ctenopharyngodon idellus),tilapia( Oreochromis niloticus),yellow catfish( Peltobagrus fulvidraco) and Scortum barcoo. 【Method】The experimental diets were consisted of 70% basal diet and 30% test feed ingredients,and Cr2O3 was added as an exogenous indicator. The fecal samples were collected by siphon after four weeks of feeding. 【Result】The apparent ...