Differential Incorporation of Dietary Fatty Acids from Flax and Fish Oils into Lipid Classes of White Bass Ova

Autor: Ryan L. Lane, Heidi A. Lewis, Jesse T. Trushenski, Christopher C. Kohler
Rok vydání: 2011
Předmět:
Zdroj: North American Journal of Aquaculture. 73:212-220
ISSN: 1548-8454
1522-2055
DOI: 10.1080/15222055.2011.579030
Popis: The extent to which flax oil can replace fish oil in diets fed to female broodstock of white bass Morone chrysops was determined by evaluating growth performance and the fatty acid (FA) profile of ovum lipid classes. Four experimental diets containing increasing levels of flax oil as 0, 33, 67, and 100% replacement of menhaden (Brevoortia spp.) fish oil were fed to female white bass for 30 weeks prior to spawning. Overall, growth and survival were unaffected when flax oil replaced fish oil in the diets. However, ovum FA composition did differ by lipid class and according to dietary intake. The FA profile of the neutral lipid classes largely resembled dietary intake, resulting in monounsaturated FAs (MUFAs) and long-chain polyunsaturated FAs (LC-PUFAs; FAs with ≥20 carbons and ≥3 double bonds) as the most predominant FAs found within ova produced by 100% fish-oil-fed broodstock, while MUFAs and 18-carbon PUFAs dominated the ovum neutral lipid in females from the 100% flax oil treatment. Although t...
Databáze: OpenAIRE
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