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Effects of alternate phases of fish oil and vegetable oil-based diets in Murray cod
Citation
Francis, DS and Turchini, GM and Smith, BK and Ryan, SG and De Silva, SS, Effects of alternate phases of fish oil and vegetable oil-based diets in Murray cod, Aquaculture Research, 40, (10) pp. 1123-1134. ISSN 1355-557X (2009) [Refereed Article]
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Copyright Statement
The definitive published version is available online at: http://interscience.wiley.com
Official URL: http://interscience.wiley.com
DOI: doi:10.1111/j.1365-2109.2009.02208.x
Abstract
Fish oil (FO)- and canola oil (CO)-based diets were regularly alternated in a daily cycle (amCO: alternation of CO in the morning and FO in the afternoon, and pmCO: alternation of FO in the morning and CO in the afternoon) or in a series of weekly cycles (2W: alternation of 2 weeks on CO and 2 weeks on FO, 4W: alternation of 4 weeks on CO and 4 weeks on FO), over a 16-week period in juvenile Murray cod (Maccullochella peelii peelii). No significant differences were observed between any of the treatments in relation to the final weight. However, fish subjected to the 2W schedule were larger (P>0.05) than all other treatments (37.2 ± 0.30 vs. 34.3 ± 0.58 in the control treatment). Fish receiving the 2W treatment had a significantly lower total net disappearance of eicosapentaenoic acid 20:5n-3 (EPA) and docosahexaenoic acid 22:6n-3 (62.1% and 24.0% respectively) compared with the control treatment (fish continuously fed a blend of 50% FO and 50% CO). Likewise, Murray cod receiving the amCO daily schedule had a significantly lower total net disappearance of EPA in comparison with the CD and pmCO treatments. These data point towards the existence of cyclical mechanisms relative to fatty acid utilization/retention.
Item Details
Item Type: | Refereed Article |
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Keywords: | circadian rhythms; fatty acids; feeding schedule; fish oil; lipo-compensatory growth; Maccullochella peelii peelii |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture fin fish (excl. tuna) |
UTAS Author: | Smith, BK (Mr Blair Smith) |
ID Code: | 60999 |
Year Published: | 2009 |
Web of Science® Times Cited: | 12 |
Deposited By: | TAFI - Marine Research Laboratory |
Deposited On: | 2010-02-24 |
Last Modified: | 2010-04-22 |
Downloads: | 0 |
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