| Effect of dietary docosahexaenoic acid on lipogenesis and lipolysis in black sea bream, Acanthopagrus schlegeli |
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| 作者姓名： | JI Hong OM Ahamd Dau YOSHIMATSU Takao UMINO Testuy NAKAGAWA Heisuke FURUHASHI Makoto SAKAMOTO Shuichi |
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| 作者单位： | Graduate School of Biosphere Science Hiroshima University Higashi-hiroshima 739-8528，Japan，Marine Finfish Production and Research Center Terengganu 22200 Malaysia，Farming System Division，National Research Institute of Aquaculture，Fisheries Research Agency，Mie 516-0913，Japan，Graduate School of Biosphere Science，Hiroshima University，Higashi-hiroshima 739-8528，Graduate School of Biosphere Science，Hiroshima University，Higashi-hiroshima 739-8528，Oriental Yeast Co Ltd Chiba 281-0002，Japan，Oriental Yeast Co Ltd Chiba 281-0002，Japan |
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| 基金项目： | Acknowledgements We wish to thank Tsuyazaki Marine Station of Kyushu University for their kind help for fish rearing. This work was supported in part by the Monbusho Scholarship Program of Japanese Ministry of Education, Science and Culture. |
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| 摘 要： | 1 IntroductionIt is well known that varying dietary fatty acidprofile affects the tissue fatty acid composition and e-ven the growth performance in fish ( Bell et al.,2002; Figueiredo -Silva et al., 2005; Harel andPlace, 2003; Schulz et al., 2005; Tocher et al.,2003). Docosahexaenoic acid (DHA), an importantessential fatty acid for marine species, has the effectnot only on the fatty acid profile of fish body tissue,but also on biological and physiological conditions(Ishizaki et al., 2000; …
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| 关 键 词： | 黑鲷鱼 饲料 DHA 脂肪生成 脂解作用 |
| 收稿时间： | 2006-03-02 |
| 修稿时间： | 2006-08-07 |
Effect of dietary docosahexaenoic acid on lipogenesis and lipolysis in black sea bream, Acanthopagrus schlegeli |
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| JI Hong,OM Ahamd Dau,YOSHIMATSU Takao,UMINO Testuy,NAKAGAWA Heisuke,FURUHASHI Makoto,SAKAMOTO Shuichi.Effect of dietary docosahexaenoic acid on lipogenesis and lipolysis in black sea bream, Acanthopagrus schlegeli[J].Acta Oceanologica Sinica,2007,26(1):112-121. |
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| Authors: | JI Hong OM Ahamd Dau YOSHIMATSU Takao UMINO Testuy NAKAGAWA Heisuke FURUHASHI Makoto and SAKAMOTO Shuichi |
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| Institution: | State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China;College of Animal Science and Technology, Northwest Agriculture and Forestry University, Shaanxi 712100, China;Graduate School of Biosphere Science, Hiroshima University, Higashi-hiroshima 739-8528, Japan;Graduate School of Biosphere Science, Hiroshima University, Higashi-hiroshima 739-8528, Japan;Marine Finfish Production and Research Center, Terengganu 22200, Malaysia;Farming System Division, National Research Institute of Aquaculture, Fisheries Research Agency, Mie 516-0913, Japan;Graduate School of Biosphere Science, Hiroshima University, Higashi-hiroshima 739-8528, Japan;Graduate School of Biosphere Science, Hiroshima University, Higashi-hiroshima 739-8528, Japan;Oriental Yeast Co Ltd, Chiba 281-0002, Japan |
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| Abstract: | Hatchery-reared juvenile black sea breams are characterized by a low level of highly unsaturated fatty acids in their bodies, as compared with wild fish. To assess the effect of docosahaxaenoic acid (DHA) on lipogenic and lipolysis enzymes, one-year fish were reared on a casein-based purified diet and a DHA fortified diet (1.5% DHA ethyl ester/kg diet) for 60 d, followed with a period of 55 d for starvation. Dietary DHA was effectively incorporated into the fish body. Fortification of DHA depressed activities of glucose-6-phosphate dehydrogenase and NADP-isocitrate dehydrogenase as lipogenic enzymes in the hepatopancreas and intraperitoneal fat body. Carnitine palmitoyltransferase as lipolysis enzyme in the hepatopancreas was active in the DHA fortified fish. Starvation after feeding experiment induced increased carnitine palmitoyltransferase activity in both control and DHA fortified fish and the activity remained higher in the DHA fortified fish, while the monoenes were selectively consumed prior to highly unsaturated fatty acids. These results indicated that dietary DHA depressed lipogenesis and activated lipolysis. |
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| Keywords: | DHA enzyme lipogenesis lipolysis black sea bream |
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