한국어류학회지 (Korean Journal of Ichthyology)

  • 제20권2호
  • /
  • Pages.81-89
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  • 2008
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

기아에 따른 양식 메기, Silurus asotus의 성장 및 생리적 반응

Effects of Starvation on Growth and Physiological Response in Cultured Catfish, Silurus asotus

  • 이정열 (군산대학교 해양과학대학 해양생명과학부) ;
  • 허준욱 (군산대학교 해양과학대학 해양생명과학부) ;
  • 김선규 (군산대학교 해양과학대학 해양생명과학부)
  • Lee, Jeong Yeol (School of Marine Life Science, Kunsan National University) ;
  • Hur, Jun Wook (School of Marine Life Science, Kunsan National University) ;
  • Kim, Sun Gyu (School of Marine Life Science, Kunsan National University)
  • 투고 : 2008.04.23
  • 심사 : 2008.06.24
  • 발행 : 2008.06.30
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초록

메기, Silurus asotus에서 포식과 기아가 생존과 성장, 내장괴지수, 간중량지수, 생식소중량지수, 외형계측형질 변화 및 혈액 parameter들에 미치는 영향을 파악하기 위해 80일동안 기아 실험을 수행하였다. 기아군의 생존과 성장은 포식군의 생존과 성장에 비해 낮았다(P<0.05). 기아는 체중성장률, 일간성장률과 비만도에서 성장 정지 효과를 나타낸 반면, 포식군은 지속적인 성장을 보였다. 외형 계측형질 중복강 부위 횡단길이 관련에서 포식군은 실험 시작시와 차이를 보이지 않았으나, 기아군은 차이를 나타냈다 (P<0.05). 실험 기간 중 혈액성상(cortisol, glucose, AST, ALT, RBC 및 hemoglobin)에서 포식군과 기아군 사이에 유의한 차이를 보였다. 본 연구 결과, 포식과 기아 파악에 사용된 모든 parameter들은 본 종의 영양 상태 확인의 지표로 유용하며, 양식 메기의 성장 시기 평가 결정에 유용하리라 사료된다.

An experiment was conducted for 80 days to determine the effect of feeding and starvation on the survival, growth, gonad-somatic index (GSI), hepato-somatic index (HSI), viscera index (LSI), the morphometric changes and hematological parameter in a cultured catfish, Silurus asotus. The survival and growth of the starved group was lower than those of the fed group during the experiment. Starvation resulted in retardation of growth, which provides examples of the reduction of final body weight, growth rate of body weight, specific growth rate and condition factor, whereas the fed group continued to grow and remained in good condition. Blood analysis (cortisol, glucose, aspartate aminotransferase, alanine aminotransferase, red blood cell and hemoglobin) showed significant differences between the fed and starved groups at the end of the experiment. These results suggest that all nutritional parameters used for starvation and feeding in this study appear to be a useful index of nutritional status in the cultured catfish.

키워드

과제정보

연구 과제 주관 기관 : 군산대학교

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