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Effects of Dietary Energy and Protein Levels on Growth, Respiration and Growth Efficiency of Juvenile Rockfish (Sebastes schlegeli)  

김강웅 (국립수산과학원)
박기영 (강릉대학교 해양생명공학부)
임영순 (강릉대학교 해양생명공학부)
김태우 (강릉대학교 해양생명공학부)
양재형 (강릉대학교 해양생명공학부)
박헌우 (강릉대학교 해양생명공학부)
배승철 (부경대학교 양식학과)
Publication Information
Journal of Aquaculture / v.16, no.2, 2003 , pp. 88-93 More about this Journal
Abstract
Diets containing 3000 kcal/kg at the crude protein (CP) level of 40% (Diet 1) and 4000 kcal/kg at the CP level of 50% (Diet 2) were fed to the juvenile rockfish, Sebastes schlegeli (35.6 g) at 3-4% body weight for a period of 28 days. Diet 2 promoted significantly higher growth and feed efficiency than Diet 1. Oxygen uptake increased with increasing body weight. The oxygen uptake-body weight relationship of diets 1 and 2 were best expressed by y=0.3218 $e^{0.0592x}$ (R=0.8494) and y=0.3612 $e^{0.0532x}$ ($R^2$=0.8805), respectively. Assimilation efficiency (AE), gross growth efficiency ( $K_1$) and net growth efficiency ( $K_2$) of the fish fed on Diet 2 were 73.8, 16.0 and 22.6%, respec- tively. Fish fed on Diet 2 showed significantly higher AE, $K_1$ and $K_2$ than those fed on Diet 1. Hence Diet 2 con- taining 4000 kcal/ kg with crude protein of 50% is recommended for the Korean rockfish.kfish.
Keywords
Synthetic diets; Protein-energy; Growth; Respiration; Ecological efficiency; Sebastes schlegeli;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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