Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Effects of Dietary Protein Concentration on Growth and Feed Utilization of Juvenile Haddock (Melanogrammus aeglefinus)

사료내 단백질 수준이 해덕(Melanogrammus aeglefinus)의 성장과 사료이용효율에 미치는 영향

  • ;
  • Santosh P. Lall (institute for Marine Biosciences, National Research Council)
  • 김정대 (강원대학교 동물자원과학대학 동물영양자원공학과) ;
  • Published : 1999.06.01
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Abstract

The effects of dietary protein level on growth, feed utlization and liver size were studied with juvenile haddock (Melanogrammus aeglefinus) of 6.88$\pm$0.54 g (mean$\pm$SD). Five isoenergetic diets containing 44.4 to 64.7% protein were fed to triplicate groups of 50 fish in a flow-through system for 6 weeks. All fish showed a relative increase of more than 300% in final weight. There were, however, no significant differences (P>0.05) in weight gain (16.1 to 17.3 g) and specific growth rate (2.9 to 3.0) among fish groups. A higher protein diets resulted in a lower feed intake. Feed: gain ratio linearly improved (P<0.05) when protein level increased from 44.4 to 59.7%. The lowest protein efficiency ratio was observed in fish fed the highest protein diet. Hepatosomatic index of fish significantly decreased from 10.7 to 7.3% with an increase in protein level. Results from this study suggest that haddock could grow well even when fed the diet with protein lower than 44.4%.

Keywords

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