Date Received: 19-03-2013 / Date Accepted: 25-06-2013 / Date Published: 13-06-2025
The experiment was carried out to identify suitable feed for first stage of grow-out period of fourfinger thread finfish (Eleutheronema tetradactylum) in sea cages at average stocking size of 4.21 g/fish with a density of 8 fish/m³. Fish were fed with three different diets as three treatments: 1) CN (100% commercial pellet with 35% crude protein), 2) CN&CT (50% commercial pellet with 35% protein and 50% fresh trash fish) and 3) CT (100% fresh trash fish) for 60 days with triplicates. Growth performance and survival rate of fourfinger thread finfish were not significantly different among the treatments (P>0.05). Food conversion ratio (FCR) and size variation (CV) were considerably lower in CN treatment than those in other two treatments, reaching 2.40 and 9.81%, respectively (P<0.05). Environmental factors such as temperature, DO, salinity, pH và NH3 were in the suitable range for fourfinger thread finfish. This shows that commercial pellet (35% crude protein) can be substituted for fresh trash fish for first stage of grow-out period of fourfinger thread finfish.
