Comparative Evaluation of Extruded and Moist Pellets for Development of High Efficiency Extruded Pellets in Olive Flounder

This study was conducted to compare an experimental extruded pellet (EP) and raw fish-based moist pellet (MP) on growth performance, whole-body and dorsal muscle composition, and textural properties of dorsal muscle for olive flounder Paralichthys olivaceus. Four groups of 8,000 fish (initial mean weight 27.1±0.05 g) per concrete tank (10×10 m) were fed the experimental diets for 16 months. After the feeding trial, no significant differences were observed in final mean body weight, weight gain, specific growth rate, feed intake, survival, and condition factor between EP and MP groups. However, feed efficiency of fish fed the EP was significantly higher than that of fish fed the MP. Mois-ture content in the whole-body of fish fed the MP was significantly higher than that of fish fed the EP. Significantl