| This study was undertaken to determine the in vitro protein digestibility in feed ingredients (fish meal, soy bean meal, corn and rice bran) in bocurti’s catfish at two sizes; small size with weight 30-40 grm/fish and big size with weight 80-100 grm/fish. This information was conducted to generat data for suitable feed formulation for bocurti’s catfish culture. Protease activity had optimum pH at 8 for stomach in both size of fish. Protease activity extracted from intestine with different pH had optimum pH at 12 and pH 10 for small size and big size of fish, respectively. The protein digestibility of feed ingredients was measured in vitro using whole intestine enzyme extract from the bocurti’s catfish. The in vitro protein digestibility was shown... |
