Effects of Supplemental Macroalgae and Spirulina in the Diets on Growth Performance in Juvenile Abalone(Haliotis discus hannai)

참전복 사료의 해조류 및 spirulina 첨가 효과

  • Lee, Sang-Min (Faculty of Marine Bioscience & Technology, Kangnung National University) ;
  • Lim, Yong-Su (National Fisheries Research and Development Institute) ;
  • Moo, Young-Bong (National Fisheries Research and Development Institute) ;
  • Yoo, Sung-Kyoo (Aquaculture Division, Pukyong National University) ;
  • Rho, Sum (Dept. of Aquaculture, Cheju National University)
  • Published : 1998.02.01

Abstract

A 20-week growth trial was conducted in flow-through aquarium system to investigate the effects of supplemental macroalgae and spirulina in the diets on growth and body cmposition in juvenile abalone (Haliotis discus hannai). Four replicate groups of the abalone averaging 65mg were fed one of ten isonitrogenous (34%) and isolipidic (7.5%) diets containing 8.1% Ulva, 7.5% Undaria, 11% Laminara, 11% Sargassum, spirulina (5, 10 and 15%), or dried Undaria powder (10 and 20%). In addition, these formulated diets were compared with natural food(dried Undaria). Survival rate of abalone were not significantly affected by the different dietary macoralgae sources, spirulina or dried Undaria powder levels (P>0.05). Weight gain and soft body weight of abalone fed the diet containing Sargassum was significantly higher (P<0.05) than those of abalone fed the diets containing Laminaria, 20% dried Undaria powder and natural food. Survival rate, weight gain, soft body weight and shell length of abalone fed natural food were lowest (P<0.05) among all diet. Moisture, protein and lipid contents of soft body were not influenced by experimental diets except natural food. Lipid content of abalones fed natural food was significantly lower than those of abalone fed other diets (P<0.05). These data indicate that abalone can more efficiently utilize Sargassum than Ulva, Undaria, Laminaria or spirulina.

Keywords

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