넙치용 습사료의 항산화제 첨가효과

Supplementary effect of the antioxidants in moist pellet diet for olive flounder, Paralichthys olivaceus

This study was conducted to investigate supplementary effects of the antioxidant, antioxidant premix and ethoxyquin to moist pellet diet (MP). Experimental fish (average body weight, 40 g) were divided into 5 group and each group was fed with raw fish diet (diet 1), 8:2 (ratio of raw fish to commercial compound meal) MP (diet 2), 8:2MP with antioxidant premix (diet 3), 8:2MP with fresh oil and ethoxyquin (diet 4), 8:2MP with oxidized oil and ethoxyquin (diet 5) for 8 weeks. The Growth rate of fish fed diet 3 was the best (167.1%). The growth rates of diet 1, 4 and 5 (138.8%, 136.0% and 145.0%, respectively) were significantly higher than diet 1 (108.3%). Feed efficiency of fish fed diet 3, 4 and 5 (53.7~55.9%) were significantly higher than diet 1 and 2 (45.6% and 49.0%, respectively). Crude protein and lipid contents of whole body fed the diet 3, 4 and 5 higher than those of diet 1 and 2. Also, these diet groups had higher hepatosomatic index (HSI), visceralsomatic index (VSI) and condition factor (CF) than the other diet groups.