Effects of Formulated Diet or Macroalgae ( Undaria pinnatifida) on the Growth and Body Composition of Juvenile Abalone (Haliotis discus hannai) Cultured in Different Water Temperature and Shelter Type

수온과 shelter형태를 달리한 참전복 사육에서 배합사료 및 미역 공급 효과

  • LEE Sang-Min (Faculty of Marine Bioscience & Technology, Kangnung National University) ;
  • PARK Chan-Sun (National Fisheries Research and Development Institute) ;
  • GO Tae Seung (National Fisheries Research and Development Institute)
  • Published : 1999.05.01

Abstract

A 15-week feeding trial was conducted to investigate the effect of formulated diet or macroalgae (Undaria pinnatifida) on the survival, growth and body composition of juvenile abalone (Haliotis discus hannai) under the different rearing environmental conditions (four shelter types and two water temperatures). Water temperature was maintained to $16.4^{\circ}C$ by heated and $13.7^{\circ}C$ by not heated natural sea water. The survival rate, weight gain and shell growth of abalone were affected by diet and water temperature (P<0.001). Survival rate of abalone fed the formulated diets was higher than that of abalone fed the Undaria pinnatifida at natural sea water (P<0.05), but this value was not influenced within abalone stocked at heated sea water in each shelter group (P>0.05). Weight and shell growth of abalone fed the formulated diets were significantly higher than those of abalone fed the Undaria pinnatifida at each temperature or shelter (P<0.05). Moisture, lipid and ash contents of the soft body were mainly affected by feeding diet than temperature or shelter (P<0.05). This study indicate that formulated diet used in this experiment could improve the growth of abalone independent of water temperature or shelter. and heated water could show a better growth of abalone in winter season.