Effects of replacement of dietary fish oil with soybean oil on growth performance and tissue fatty acid composition in marine herbivorous teleost Siganus canaliculatus
Effects of replacement of dietary fish oil with soybean oil on growth performance and tissue fatty acid composition in marine herbivorous teleost Siganus canaliculatus
复制标题
大豆油替代膳食鱼油对海洋草食性硬骨鱼 Siganus canaliculatus 生长性能和组织脂肪酸组成的影响
DOI：
10.1111/j.1365-2109.2011.02931.x
复制
发表时间：
2012-08
影响因子：
2
通讯作者：
Yuanyou Li
中科院分区：
文献类型：
--
作者：
Shude Xu;Shuqi Wang;Liang Zhang;Cuihong You;Yuanyou Li
鱼油替代物在海洋肉食性鱼类中的应用研究较多，但在海洋草食性或杂食性鱼类中的应用研究较少。为探讨大豆油（SO）作为饲料脂肪的可行性，并验证其将C18多不饱和脂肪酸（PUFA）转化为长链多不饱和脂肪酸（LC-PUFA）的能力，以长鳍蓝子鱼（Siganuscanaliculatus）为试验对象，分别饲喂含0.76%（SO 0）、23%（SO 23）、45%（SO 45）和67%（SO 67）。饲喂8周后，SO23组和SO 45组的增重、特定生长率、饲料转化率和蛋白质利用率均显著高于SO 0组和SO 67组（P < 0.05）。肝脏中二十碳五烯酸（EPA）、二十二碳五烯酸（DPA）、二十二碳六烯酸（DHA）和总n-3多不饱和脂肪酸（n-3 PUFA）的含量与饲料中相应脂肪酸的含量呈平行变化。SO 0组和SO23组肌肉中EPA、DPA和总n-3 PUFA含量差异不显著（P> 0.05），SO 45组和SO23组肝脏中花生四烯酸（ARA）、20：4 n-3含量和肌肉中20：3 n-6含量差异不显著（P> 0.05），说明SO23/SO 45组的脂肪酸含量显著低于SO 0组，说明LC-PUFA是由C18前体生物合成的。结果表明，SO可能是一种适宜的脂源。长鳍金枪鱼，并可以取代高达67%或45%的总饲料FO，而不会对鱼类的生长性能或营养品质产生负面影响。此外，该研究增加了我们对海洋草食性鱼类中FO替代的了解。
Fish oil (FO) substitution has been studied in many marine carnivorous fish, but seldom in marine herbivorous or omnivorous species. To evaluate the feasibility of using soybean oil (SO) as a dietary lipid and confirm its capability of converting C18 polyunsaturated fatty acid (PUFA) into long chain polyunsaturated fatty acid (LC-PUFA) in the marine herbivorous teleost Siganus canaliculatus, juvenile fish were fed with four formulated diets differing in lipid composition, with SO accounting for 0.76% (SO0), 23% (SO23), 45% (SO45) and 67% (SO67) of total dietary lipid respectively. After feeding for 8 weeks, growth performance including weight gain, specific growth rate, feed conversion ratio and protein efficiency rate were better in the SO23 and, especially, SO45 groups than in the SO0 and SO67 groups (P < 0.05). Tissue fatty acid compositions were affected by diet, with the liver contents of eicosapentaenoic (EPA), docosapentaenoic (DPA), docosahexaenoic (DHA) acids and total n-3 PUFA displaying parallel changes with the corresponding dietary fatty acids. While the muscle contents of EPA, DPA and total n-3 PUFA between SO0 and SO23 groups, and the liver contents of arachidonic acid (ARA) and 20:4n-3, as well as the muscle content of 20:3n-6 between SO0 and SO45 groups showed no difference, confirming the biosynthesis of LC-PUFA from C18 precursors in vivo as the contents of corresponding fatty acids in diets SO23/SO45 were much lower than those in diet SO0 (P < 0.05). The results indicate that SO may be a suitable dietary lipid source for S. canaliculatus, and can replace up to 67% or 45% of total dietary FO without negatively compromising growth performance or nutritional quality of fish respectively. Moreover, the study increases our knowledge of FO substitution in marine herbivorous fish.
登录
查看更多内容
DOI：
--
发表时间：
2001
期刊：
--
影响因子：
--
作者：
R. Hardy;D. Higgs;S. Lall;A. Tacon
通讯作者：
R. Hardy;D. Higgs;S. Lall;A. Tacon
影响因子：
1.9
作者：
JUANEDA, P;ROCQUELIN, G
通讯作者：
ROCQUELIN, G
影响因子：
4.5
作者：
J. Sargent;L. McEvoy;A. Estévez;G. Bell;M. V. Bell;J. Henderson;D. Tocher
通讯作者：
J. Sargent;L. McEvoy;A. Estévez;G. Bell;M. V. Bell;J. Henderson;D. Tocher
影响因子：
4.5
作者：
H. Westernhagen
通讯作者：
H. Westernhagen
草食性草鱼（Ctenopharyngodon idella）高水平利用不同膳食脂质来源：与肝脏脂肪酸氧化相关的机制
影响因子：
3.5
作者：
Du, Z. Y.;Clouet, P.;Liu, Y. J.
通讯作者：
Liu, Y. J.