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Effects of dietary lipids on growth, fatty acid composition, and lipid metabolism of the green sea urchin Strongylocentrotus droebachiensis.

机译:膳食脂质对绿海顽童Strylylocentrotus droebachiensis生长,脂肪酸组成和脂质代谢的影响。

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摘要

The effects of different dietary lipids (hydrogenated coconut oil, corn oil, linseed oil, and mixtures of corn oil, linseed oil, menhaden oil and/or soy lecithin) on growth and fatty acid composition of the sea urchin Strongylocentrotus droebachiensis were investigated. The highest biomass gain expressed as relative growth rate (%g/day) was found when sea urchins were fed a diet containing corn oil, linseed oil, menhaden oil, and lecithin (CLnML) However the RGR of urchins fed CLnML was not significantly different from urchins fed corn (C), corn and linseed (CLn), and corn, linseed and menhaden (CLnM) (p ≥ 0.05). The poorest growth was obtained with an EFA deficient control diet with hydrogenated coconut oil (HCO) as the dietary lipid source. The addition of soy lecithin to the diet (CLnML) enhanced the production and incorporation of 20:4n-6 in the test and gonad. The enzymatic capabilities of sea urchins for desaturation and elongation of 18:2n-6 to 20:4n-6, and 18:3n-3 to 20:5n-3, as well NMID synthesis were determined. (Abstract shortened by UMI.)
机译:不同的饮食脂质(氢化椰子油,玉米油,亚麻籽油,以及玉米油,亚麻籽油,薄荷油和/或大豆卵磷脂的混合物)对海胆生长和脂肪酸组成的影响 Strongylocentrotus droebachiensis < / italic>进行了调查。用海胆饲喂玉米油,亚麻籽油,鲱鱼油和卵磷脂(CLnML)的日粮时,发现以相对增长率(%g /天)表示的最高生物量增益。来自以玉米(C),玉米和亚麻籽(CLn)以及玉米,亚麻籽和鲱(CLnM)喂养的海胆(p≥0.05)。用全EFA缺乏对照日粮(氢化椰子油(HCO)作为日粮脂质源)获得最差的生长。在日粮中添加大豆卵磷脂(CLnML)可提高测试和性腺中20:4n-6的产生和吸收。确定了海胆对18:2n-6至20:4n-6和18:3n-3至20:5n-3的去饱和和伸长的酶促能力以及NMID合成。 (摘要由UMI缩短。)

著录项

  • 作者单位

    Dalhousie University (Canada).;

  • 授予单位 Dalhousie University (Canada).;
  • 学科 Biology Animal Physiology.; Agriculture Fisheries and Aquaculture.
  • 学位 M.Sc.
  • 年度 2003
  • 页码 101 p.
  • 总页数 101
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生理学;水产、渔业;
  • 关键词

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