배합사료 및 다시마 공급이 참전복 (Halioitis discus hannai) 치패의 성장 및 체조성에 미치는 수온의 영향

Abstract

The effect of water temperature and feed on the growth, survival, and body composition of juvenile abalone (Haliotis discus hannai) fed an artificial formulated diet and a macroalgae (Laminaria japonica) for 12 weeks was investigated. Rearing temperature was maintained at <TEX>$13{\circ}C,\;16{\circ}C,\;19{\circ}C$</TEX> by heated and natural sea water temperatures <TEX>$(7.5-10.2{\circ}C).$</TEX> Shell growth, weight gain, and survival rate of the abalone were affected by water temperature and diet (P<0.05). Survival and growth rate of the abalone fed with the formulated diet and Laminaria at <TEX>$19{\circ}C$</TEX> was significantly higher than those of the abalone fed the formulated diet or Laminaria at <TEX>$13{\circ}C,\;16{\circ}C,$</TEX> and ambient temperatures (P<0.05). Moisture, crude protein, crude lipid, and ash contents of the soft whole body were affected mainly by diet than rearing water temperature (P<0.05). These indicate that a mixture of formulated diet and macroalgae could improve the growth of the abalone independent of water temperature and heated water could improve the growth of abalone during the winter season.