Effects of alternate phases of fish oil and vegetable oil-based diets in Murray cod
Data(s) |
01/07/2009
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Resumo |
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 (<i>Maccullochella peelii peelii</i>). 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 (<i>P</i>>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.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Blackwell Science |
Relação |
http://dro.deakin.edu.au/eserv/DU:30020753/francis-effectsofalternate-2009.pdf http://dx.doi.org/10.1111/j.1365-2109.2009.02208.x |
Direitos |
2009, The Authors |
Palavras-Chave | #circadian rhythms #fatty acids #feeding schedule #fish oil #lipo-compensatory growth #Maccullochella peelii peelii |
Tipo |
Journal Article |