Effects of Supplemented Salt in the Diet on Survival, Growth and Body Fluid Composition of Juvenile Grey Mullet (Mugil cephalus) Reared in Freshwater

어린 숭어(Mugil cephalus)의 담수사육에서 염분흡착 사료가 성장, 생존율 및 체액의 조성에 미치는 영향

  • Chu, Chung (Department of Aquaculture, Pukyong National University) ;
  • Chang, Young-Jin (Department of Aquaculture, Pukyong National University) ;
  • Hur, Jun-Wook (Department of Aquaculture, Pukyong National University)
  • 추청 (부경대학교 양식학과) ;
  • 장영진 (부경대학교 양식학과) ;
  • 허준욱 (부경대학교 양식학과)
  • Published : 2000.12.01

Abstract

Experimental cohorts of Mugil cephalus were divided into 5 groups : seawater~normal feed (SWN), acclimation to freshwater~normal feed (GFWN), acclimation to freshwater~salt feed (Gf\iVS), freshwater. normal feed (FWN) and freshwater-salt feed (f\iVS). Growth was faster in the SWN, Gf\iVS, and GFWN groups than in the f\iVS and FWN groups. Condition factor did not differ among the groups. Survival (92 %) of the juveniles was the highest in the Gf\iVS group; however, the others showed no significant difference. Moisture of FWN group was significantly higher than that of SWN group (P < 0.05). Potassium concentration was significantly higher in the SWN group than that of others (P < 0.05). It was highest (30 mmolfl) among the cohort of SWN.

숭어 치어의 담수 사육을 위한 저염분 순화방법과 이에 따른 적응 능력을 높이기 위하여 염분사료를 공급하여 이에 따른 성장, 생존율 및 어체의 생리상태를 비염분사료구와 비교하였다. 실험 종료시 전장과 체중의 성장률은 해수사육구(SWN), 순차적으로 담수로 옮긴 염분사료구(GFWS) 및 순차적으로 담수로 옮긴 비염분사료구(GFWN)에서 빠르게 담수로 옮긴 염분사료구(FWS) 및 빠르게 담수로 옮긴 비염분사료구(FWN) 순서로 나타났다. 비만도는 모든 실험구에서 서로 차이를 보이지 않았다. 실험어의 생존율은 순차적으로 담수로 옮긴 염분사료구가 92.2${\pm}$2.2%로 가장 높았으나, 다른 실험구와 차이가 없었다. 어체의 수분함량은 빠르게 담수로 옮긴 비염분사료구에서 해수구보다 높게 나타나 차이를 보였다. 체액의 삼투질 농도는 실험 종료시에 모든 실험구에서 차이를 보이지 않았다. $Na^+$ 농도는 실험 종료시 해수사육구, 순차적으로 담수로 옮긴 비염분사료구, 순차적으로 담수로 옮긴 염분사료구 및 빠르게 담수로 옮긴 비염분사료구에서 차이를 보이지 않았다. 체액의 K/$^+$ 농도는 실험 종료시 해수사육구가 다른 실험구에 비교해 높은 수준을 나타냈다.

Keywords

References

  1. Aquaculture v.114 Feed intake, growth and osmoregulation in Arcticcharr, Salvelinus alpinus (L.), following abrupt transfer from freshwater to more saline water Arenesen A.M.;E.H. Jorgensen;J. Malcolm
  2. J. Comp. Physiol. v.124 Osmotic and ionic regulation in the cod, Gadus callarias Ⅱ-Salt balance Flectcher C.R.
  3. Comp. Biochem. Physiol. v.73 Application of thyroid and steroid hormones as anabolic agents in fish culture Higgs D.A.;U.H.M. Fagerlund;J.G. Eales;J.R. McBrid
  4. J. Exp. Biol. v.98 Progressive processing of ingested water in the gut of seawater teleosts Kirsch R.;M.F. Meister
  5. Transport Procosses, Iono-and Osmoregulation The gut as an osmoregulatory organ: Comparative aspects and special references to fishes Kirsch R.;W. Humbert;V. Simoneaux;R.; Gilles(ed.);M. Gilles-Baillien(ed.)
  6. Stromateidae through Ogcocephallidae v.6 Development of fishes of the mid-Atlantic Bight: A altas of egg, larval and juvenile stages Martin F.D.;G.E. Drewry
  7. Aquaculture v.49 The effect of salinity on growth of rainbow trout Makay L.;B. Gjerde
  8. Can. J. Fish. Aquat. Sci. v.48 Effects of salinity on growth, metabolism, and ion regulation in juvenile rainbow trout and steelhead trout(Oncorhynchus mykiss) and fall chinook salmon (Oncorhynchus kisutch) Morgan J.D.;G.K. Iwama
  9. ICLARM studies and reviews v.3 Review of breeding and propagation techniques for grey mullet, Mugil cephalus Nash C.E.;Z.H. Shehaden
  10. J. Fish. Res. Bd. Can. v.28 Effects of Salinity on the survival and growth of pre-smolt coho salmon, Oncorhychus kisutch Otto R.G.
  11. Salvelinus fontinalis Mitchill. J. Fish. Biol. v.41 The effect of salt diets and gradual transfer to sea water on osmotic adaptation, gill Na+,K+-ATPase activation and survival of brook charr Pelletier D.;M. Besner
  12. Can. J. Zool. v.46 Oxygen consumption of rainbow trout in relation to activity and salinity Rao G.
  13. Aquaculture v.61 Response of chloride cell numbers and gill Na+, K+-ATPase activity of freshwater rainbow trout (Salmo gairdneri Richardson) to salt feeding Salman N.A.;F.B. Eddy
  14. Aspects of water quality producing stress in intensive fish culture Smart G.R.;A.D. Pickering(ed.)
  15. Aquaculture v.99 Seawater adaptability of pink salmon (Oncorhynchus gorbuscha) fry: effects of size and temperature Varnavsky V.S.;Y.S. Basov;S.A. Rostomova
  16. Salinity adaptation. Comp. Biochem. Physiol. v.67 Studies on biology of the red sea bream, Chrysophrys major Ⅱ. Woo N.Y.S.;A.C.Y. Fung
  17. 한국수산학회지 v.30 어린 숭어 (Mugil cephalus)의 염분별 삼투조절능력 이영춘;장연진;이복규
  18. 한국양식학회지 v.9 어린숭어 (Mugil cephalus)의 염분농도별 성장과 생존율 비교 장연진;여영춘;이복규
  19. 한국수산학회지 v.32 사육수의 급격한 염분 변화에 따른 숭어(Mugil cephalus)와 틸라피아(Oreochromis niloticus)의 생리적 반응 장영진;허준욱
  20. 한국양식학회지 v.12 은어, Plecoglossus altivelis의 성장과 삼투압 조절에 미치는 염분의 영향 전민지;강경호;정영진;이종관
  21. 한국양식학회지 v.12 사육수의 단계적인 염분변화에 따른 숭어(Mugil cephalus)와 틸라피아(Oreochromis niloticus)의 생리적 반응 허준욱;장영진