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Seedling Production of the Pacific Bluefin Tuna Thunnus orientalis  

Ji, Seung-Cheol (Jeju Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Takaoka, Osamu (Fisheries Laboratory, Kinki University)
Takii, Kenji (Fisheries Laboratory, Kinki University)
Jeong, Gwan-Sik (Chonnam National University of College Fisheries and Ocean Science)
Han, Seock-Jung (Jeju Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Publication Information
Journal of Aquaculture / v.21, no.4, 2008 , pp. 272-277 More about this Journal
Abstract
We investigated the growth and survival in seedling production, and growth performance was compared with the different rearing tanks and protein source of formulated feed for juvenile Pacific bluefin tuna Thunnus orientalis (PBT). The survival rate at the end of nursery culture at 30 days after hatching was $0.69{\pm}0.40%$, and total length and mean body weight were $49.83{\pm}2.52\;mm$ and $1.03{\pm}0.09\;g$, respectively. Growth performance has no significant difference in fish reared by different tanks forms for 10 days. In order to develop an artificial diet, we evaluated the dietary utility of enzyme treated fish meal (Bio-CP, BIO) for juvenile PBT. Only diet BIO sustained similar growth and higher feed efficiency, and final carcass lipid content as compared to those of Sand lance (SL) These results revealed that BIO-CP a suitable dietary protein source, could sustain growth of PBT.
Keywords
Pacific bluefin tuna; Thunnus orientalis; Seedling production; Protein source; Growth performance;
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