LIU Xing-Wang, TAN Bei-Ping, MAI Kang-Sen, AI Qing-Hui, ZHOU Qi-Cun. EFFECTS OF DIET ARY N-3 HIGH LY UNSATURATED FATTY ACIDS ON GROWTH AND FATTY ACID COMPOSITION OF JUVENILE COBIA ( RACHYCENTRON CANADUM)[J]. ACTA HYDROBIOLOGICA SINICA, 2007, 31(2): 190-195.
Citation: LIU Xing-Wang, TAN Bei-Ping, MAI Kang-Sen, AI Qing-Hui, ZHOU Qi-Cun. EFFECTS OF DIET ARY N-3 HIGH LY UNSATURATED FATTY ACIDS ON GROWTH AND FATTY ACID COMPOSITION OF JUVENILE COBIA ( RACHYCENTRON CANADUM)[J]. ACTA HYDROBIOLOGICA SINICA, 2007, 31(2): 190-195.

EFFECTS OF DIET ARY N-3 HIGH LY UNSATURATED FATTY ACIDS ON GROWTH AND FATTY ACID COMPOSITION OF JUVENILE COBIA ( RACHYCENTRON CANADUM)

  • Received Date: May 16, 2005
  • Rev Recd Date: June 26, 2006
  • Published Date: March 24, 2007
  • A feeding experiment was conducted in floating sea cages (1.0m× 1.5m× 2.0m) to determine the requirement of juvenile cobia ( Rachycentron canadum) for n-3 highly unsaturated fatty acids (n-3 HUFA). Six semi-purified diets were formulated to contain graded levels of n-3 HUFA, ranging from 0.6 to 2.11 %. Juvenile fish (weighing 8.3 ± 0.5g) were randomly divided into 18 cages of 20 fish, and fed one of 6 diets for 8 weeks. The water temperature fluctuated from 29 to 23. 5 ℃, the salinity from20.9 to 23.9 ‰, and dissolved oxygen content was approximately 7mg/L during the experimental period. No significant differences (ANOVA, p> 0. 05) in survival were observed among dietary treatments. However, specific growth rate (SGR) was significantly (p< 0.05) affected by dietary n-3 HUFA. SGR significantly increased with increasing dietary n-3 HU2 FA from 0 to 1124 %, and reached a peak at 1.56 % of n-3 HUFA. Then, SGR slightly decreased for the groups fed the diets containing higher than 1.56 % of n-3 HUFA. The content of 18∶ 1n-9 in muscle and liver decreased, while 22∶ 6 n-3 increased with increasing dietary n-3 HUFA. Based on SGR, the requirement for n-3 HUFA of juvenile cobia is about 1.49 % of dry dietby broken-line analysis.
  • [1]
    [J]. Bull. Jap. Soc. Sci. Fish., 1979, 45: 1319—1323
    [1]
    Owen J M, Adron J W, Sargent J R, et al. Studies on the nutritionof marine flatfish. The effect of dietaryfatty acids on the tissue fattyacids of the plaice Pleuronectes platessa [J]. Mar. Biol., 1972,13: 160—166
    [2]
    [J]. J. World Aquac. Soc., 1993, 33: 432—440
    [2]
    Takeuchi T, Shiina Y, Watanabe T. Suitable levelsof n23 highly unsaturated fatty acids in diet for fingerlingsof red sea bream [J]. Nippon Suisan Gakkaishi, 1992, 58(3): 509—514
    [3]
    Van Ballaer E, Amat F, Hontoria F, et al. Preliminary results onthe nutritional evaluationof omega 32HUFA2enriched Artemia nauplliifor larvae of the sea bass, Dicentrarchus labrax [J]. Aquaculture,1989, 49: 223—229
    [4]
    Izquierdo M S. Essential fatty acid requirements of cultured marinefish larvae [J]. Aquaculture Nutrition, 1996, 2: 183—191
    [5]
    K im KD, Lee S M. Requirement of dietary n23 highly unsaturatedfatty acids for juvenile flounder (Paralichthys olivaceus) [J]. Aqua culture, 2004, 229: 315—323
    [6]
    Ibeas C, Izquierdo M S, Lorenzo A. Effect of different levels of n23highly unsaturated fatty acids on growth and fatty acid composition ofjuvenile gilthead seabream (Sparus aurata) [J].Aquaculture,1994, 127: 177—188
    [7]
    Watanabe T, Takeuchi T, Arakawa T, et al. Requirement of juvenile striped jack Longirostris delicatissimus for n23 highly unsaturatedfatty acids [J]. Nippon Suisan Gakkaishi, 1989, 55: 1111—1117
    [8]
    Tan B P, Yang HJ, Liang H O. Effect of dietary protein to energyratios (P/E ratios) on growth, survival and carcass compositionof ju2venile cobia, Rachycentron canadum [J]. Acta Hydrobiologica Sini2ca, 2002, 26(supplement): 46—52 [谭北平,阳会军,梁海鸥.饲料中不同蛋白质和能量水平对军曹鱼幼鱼生长、 存活及体成分的影响. 水生生物学报,2002,26(增刊):46—52]
    [9]
    Chou R L, Su M S, Chen H Y. Optimal dietary protein and lipidlevels for juvenile cobia (Rachycentron canadum) [J]. Aquaculture,2001, 193: 81—89
    [10]
    Chou R L, Her B Y, Su M S, et al. Substitutingfish meal with soy2194 水 生 生 物 学 报31 卷bean meal in diets of juvenile cobia Rachycentron canadum [J].Aquaculture,2004, 229: 325—333
    [11]
    Arlington V A. Association of official analytical chemists (AOAC):official methods of analysis of official analytical chemists international, 16th edn [S]. 1995
    [12]
    Metcalfe L D, Schmitz A A, Pelka J R. Rapid preparation of fattyacid estersfrom lipidsfor gas chromatographic analysis [J]. Analytical Chemistry, 1966, 38: 514—515
    [13]
    Ibeas C, CejasJ R, G omez T, et al. Influence of dietary n23 HUFAlevels on juvenile gilthead seabream (Sparus aurata) growth and tissue fatty acid composition [J]. Aquaculture, 1996, 142: 221—235
    [14]
    Lee S M. Review of the lipid and essential fatty acid requirements ofrockfish (Sebastes schlegeli) [J]. Aquac. Res., 2001, 32 (Suppl.1): 8—17
    [15]
    Lee S M, Lee J H, K im KD. E ffect of dietary essential fatty acids ongrowth, body composition and blood chemistryof juvenile starryflounder (Platichthys stellatus) [J]. Aquaculture, 2003, 225: 269—281
    [16]
    Sargent J R, Bell J G, McEvoyL A, et al. Recent developments inthe essential fatty acid nutrition of fish [J].Aquaculture, 1999,177: 191—199
    [17]
    Takeuchi T, Watanabe T. Nutritive value of w3 highly unsaturatedfatty acids in pollock liver oil for rainbow trout [J].Bull. Jap.Soc. Sci. Fish., 1976, 42:907—919
    [18]
    Takeuchi T, Watanabe T, Nose T. Requirement for essential fattyacids of chum salmon (Oncorhynchus keta) infreshwater environment
    [19]
    Thongrod S, Takeuchi T, Satoh S, et al. Requirement of YamameOncorhynchus mason for essential fatty acids [J].Nippon SuisanGakkaishi, 1990, 56: 1255—1262
    [20]
    Yu T C, Sinnhuber R O. Growth response of rainbow trout (Salmogairdneri) to dietary n23 and n26 fatty acids [J].Aquaculture,1976, 8: 309—317
    [21]
    Watanabe T. Importance of docosahexaenoic acid in marine larval fish

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