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Long-term Evaluation of Muscle Quality of the Olive Flounder, Paralichthys olivaceus, Fed with Extruded Pellet  

Kim, Kang-Woong (Aquafeed Research Center, NFRDI)
Kang, Yong-Jin (Aquafeed Research Center, NFRDI)
Kim, Kyoung-Duck (Aquafeed Research Center, NFRDI)
Choi, Se-Min (Aquafeed Research Center, NFRDI)
Lee, Jong-Yun (Aquafeed Research Center, NFRDI)
MoonLee, Hae-Young (Fisheres Resources Enhancement Research Team, NFRDI)
Bai, Sung-Chul C. (Department of Aquaculture, Pukyong National University)
Publication Information
Journal of Aquaculture / v.20, no.1, 2007 , pp. 51-55 More about this Journal
Abstract
This study was conducted to evaluate the muscle quality of the olive flounder fed on extruded pellet (EP) diets compared with a raw fish moist pellet (MP) diet for olive flounder, Paralichthys olivaceus in a commercial scale for a year. The sensory and physical qualities and palatable compounds were compared for evaluation of muscle quality in fish. Four diets were formulated for this experiment: two experimental EP diets (EP 1 and 2), one commercial EP diet (CEP) and MP diet. Crude lipid of fish fed EP1 and EP2 was significantly higher (P<0.05) than that of fish fed CEP, but not significantly different from that of fish fed MP (P>0.05). In the palatable compounds, the free amino acids composition were much alike in that of all the diets. Proline, glycine and alanine from fish fed diet EPs were the most abundant compound among amino acid compositions. There was little difference in the free amino acid compositions of all flounder from localities and the growing conditions between wild and cultured fishes. Taurine of fish fed EP1 was dominantly high over that of fish fed EP2, CEP and MP. In all nucleotides and their related compounds, ATP and IMP from fish fed EP diets were higher (P<0.05) than those of fish fed MP. In the sensory score, overall-acceptability of fish fed EP2 were significantly higher (P<0.05) than that of fish fed EP1, CEP and MP. Hardness of physical properties from fish fed EP2 was significantly higher (P<0.05) than those of fish fed CEP (P<0.01). These results strongly suggest that diets EP could be developed to replace MP diet for the grow-out stage of olive flounder without adverse effect on growth performance.
Keywords
Olive flounder; Paralichthys olivaceus; Physical properties; Free amino acids; Nucleotide;
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Times Cited By KSCI : 4  (Citation Analysis)
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