Influence of dietary lipid sources on growth and fatty acid composition of juvenile abalone, Haliotis discus hannai Ino.

摘要: A study was conducted to evaluate the effects of dietary lipid sources on the growth and fatty acid composition of juvenile abalone Haliotis discus hannai Ino. Four triplicate groups of juvenile abalone (initial weight: 0.13±0.04 g; initial shell length: 10.23±1.48 mm) were led with one of four semipurified diets containing 3.5% of dietary lipid from either tripalmitin (TP), soybean oil (SO), linseed oil (LO), or 20: 5n-3-enriched fish oil (FO), respectively, and were reared for 120 days in a recirculation water system. Results showed that the growth rate of abalone was significantly affected by dietary lipid sources (P< 0.05). The dietary lipid, FO produced the highest weight gain rate (WGR, 413.2%), closely followed by LO (389.0%) and SO (382.4%). These three WGR values were not significantly different to each other. However, abalone fed the TP diet showed a significantly lower WGR (267.3%). Carcass moisture and protein …