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Effect of dietary linolenic and linoleic acids upon growth and lipid metabolism of rainbow trout (Salmo gairdneri)

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Lipids

Abstract

Nine diets, each containing different levels of linoleic acid (18∶2ω6) and linolenic (18∶3ω3) were fed to duplicate groups of rainbow trout for 14 weeks. The growth rate, feed efficiency, accumulated mortality, and fatty acid composition of neutral fat and phospholipids of these groups of fish were determined. The growth was slow in the groups of fish receiving diets containing (A) low concentration of 18∶3ω3 and (B) high concentration (5%) of 18∶2ω6. The accumulated mortality was high in these groups of fish. The diet containing 1% 18∶3ω3 alone supported rapid fish growth with low mortality. The feed efficiency of this diet was also high. The metabolism of 18∶2ω6 and 18∶3ω3 in fish and their conversion to more unsaturated fatty acids typical of fish lipids was investigated.

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References

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Authors and Affiliations

  1. Department of Food Science and Technology, Oregon State University, 97331, Corvallis, Oregon

    T. C. Yu & R. O. Sinnhuber

Authors
  1. T. C. Yu
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  2. R. O. Sinnhuber
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Technical Paper 3854 Oregon Agricultural Experiment Station.

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Yu, T.C., Sinnhuber, R.O. Effect of dietary linolenic and linoleic acids upon growth and lipid metabolism of rainbow trout (Salmo gairdneri). Lipids 10, 63–66 (1975). https://doi.org/10.1007/BF02532156

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  • DOI: https://doi.org/10.1007/BF02532156

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