Daily feeding Rates of Parrot Fish Oplegnathus fasciatus Fed Extruded Pellet at the Different Water Temperatures

돌돔 Oplegnathus fasciatus 성장단계 별 수온에 따른 배합사료 섭취율

  • Kim, Kyong-Min (Jeju Fisheries Research institute, National Fisheries Research & Development Institute) ;
  • Lee, Jung-Uie (Jeju Fisheries Research institute, National Fisheries Research & Development Institute) ;
  • Kim, Jae-Woo (Jeju Fisheries Research institute, National Fisheries Research & Development Institute) ;
  • Han, Seok-Jung (Jeju Fisheries Research institute, National Fisheries Research & Development Institute) ;
  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Jo, Jae-Yoon (Department of Aquaculture, Pukyong National University)
  • Published : 2008.11.25

Abstract

Daily feeding rates on parrot fish of different body weights (10-30 g, 40-60 g, 70-120 g, 130-240 g, 250-480 g, < 480 g) were investigated under six water temperatures of $15.1^{\circ}C$, $19.2^{\circ}C$, $22.5^{\circ}C$, $23.0^{\circ}C$, $24.7^{\circ}C$ and $26.5^{\circ}C$. The lowest and highest daily feed intakes (%/body weight/day) of the smallest fish group (10-30 g) were 2.24% and 6.04% at $15.1^{\circ}C$ and $24.7^{\circ}C$ temperatures, respectively. Daily feed intakes of 40-60 g fish group were recorded as 1.14% and 3.85% at 15.1 and 24.7, respectively. But, feed intake of bigger group (250-480 g) were 0.48% and 2.06% under $15.1^{\circ}C$ and $26.5^{\circ}C$, and these values were relatively lower than those of smaller fish groups. Daily feeding intakes of parrot fish fed extruded pellet tended to decrease when fish weight increased and water temperature decreased.

본 연구는 우리나라 주요 양식품종인 돌돔을 대상으로 배합사료 급이체계를 구축하여 자동화 관리 시스템 구축을 위해 실시하였는데, 돌돔을 대상으로 체중이 배수로 증가하도록 성장 단계를 설정하여 각 단계에서 수온별 최대 배합사료 섭취량을 조사하기 위하여 수행하였다. 돌돔 성장단계를 체중에 따라 $10{\sim}30\;g$, $40{\sim}60\;g$, $70{\sim}120g$, $130{\sim}240$, $250{\sim}480\;g$, 480 g 이상으로 나누고, 평균수온 $15.1^{\circ}C$, $16.0^{\circ}C$, $19.2^{\circ}C$, $22.5^{\circ}C$, $23.0^{\circ}C$, $24.7^{\circ}C$, $26.5^{\circ}C$에서 최대 섭취량을 구하였을 때 $10{\sim}30\;g$ 돌돔의 일일사료섭취율은 $15.1^{\circ}C$에서 어체중의 2.24%였으나 수온 증가와 더불어 증가하여 6.04%까지 섭취하였다. $30{\sim}60\;g$의 돌돔은 일일섭취율이 $15.1^{\circ}C$일 때 어제중의 1.14%를 섭취하였으나, 고수온기일 때는 3.85%까지 섭취하였다. 체중 $240{\sim}480\;g$의 돌돔의 일일사료섭취율은 $15.1^{\circ}C$에서 어체중의 0.48%, $26.5^{\circ}C$에서 2.06%섭취하는 것으로 나타났다.

Keywords

References

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