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Sodium butyrate (SB) is an active organic acid usually applied in aquaculture. Hence, the effects of SB were investigated on the growth performance, digestive enzyme activity, and blood biochemistry of Thinlip Grey Mullet (Liza ramada) in this study. Five test diets with an average protein level of 30.33 % and energy of 18.22 MJ/kg were formulated to include SB supplementation at 0, 0.5, 1, 2, and 4 g/kg. In 15 enclosures (0.5 ×0.5 ×1 m), 225 fish were divided equally, where each hapa was stocked with 15 fish with an average weight of 7.79 ± 0.04 g/fish. Every three hapas represented one experimental group (triplicates). Fish were kept under average water temperature (25.12 ± 0.33 °C), salinity (11.46 ppt), and total ammonia (0.16 ± 0.01 mg/L) during the trial. The enclosures were fixed in a concrete tank with running water in a flow-through system, and fish were fed the control diet at 3 % of the body weight twice daily (08:00 and 15:00) for 60 days. At the end of the trial, all fish were fasted for 24 h, weighed and counted, then blood samples collected, and intestines and livers were dissected. The results revealed that fish-fed SB had higher growth performance, feed intake, protein efficiency ratio, and protein productive value than fish-fed SB-free diet (P |
