Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance
Abstract We studied the performance of cod rearing in which live feed was given under three different essential fatty acid (EFA) enrichment regimes, using commercially available live-feed enrichments. We assessed the fatty acid profile [docosahexaenoic (DHA), eicosapentaenoic (EPA), and arachidonic...
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Oxford University Press (OUP)
2006
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2005.11.002 http://academic.oup.com/icesjms/article-pdf/63/2/302/29124250/63-2-302.pdf |
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croxfordunivpr:10.1016/j.icesjms.2005.11.002 2024-05-19T07:37:10+00:00 Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance Cutts, C.J. Sawanboonchun, J. Mazorra de Quero, C. Bell, J.G. 2006 http://dx.doi.org/10.1016/j.icesjms.2005.11.002 http://academic.oup.com/icesjms/article-pdf/63/2/302/29124250/63-2-302.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 63, issue 2, page 302-310 ISSN 1095-9289 1054-3139 journal-article 2006 croxfordunivpr https://doi.org/10.1016/j.icesjms.2005.11.002 2024-04-25T07:58:54Z Abstract We studied the performance of cod rearing in which live feed was given under three different essential fatty acid (EFA) enrichment regimes, using commercially available live-feed enrichments. We assessed the fatty acid profile [docosahexaenoic (DHA), eicosapentaenoic (EPA), and arachidonic acid (AA)] in larval somatic tissue, relative to its amounts in both rotifers and Artemia as well as to larval performance. Overall, percentage lipid level of each experimental diet for the trial was approximately 50%. Further, there were no significant differences in total fatty acid levels of larvae from each treatment at the end of the trial (mean = 444.76 μg fatty acid per mg lipid). However, during the rotifer phase, larvae from each treatment were able to incorporate comparable levels of %DHA, irrespective of levels in the diet. Despite this, the rotifer diet with more %DHA still promoted better larval growth than other treatments. Conversely, larvae from two of the treatments did not exhibit any accumulation of AA, reflecting levels found in the diet instead. However, between-tank differences in larval %AA showed improved growth during the rotifer period when larval %AA was high. Low ratios of EPA had no effect. During the Artemia phase, percentage levels of larval DHA decreased; there was no accumulation of DHA relative to dietary levels, which in Artemia were significantly lower than in rotifers (6 cf. 20–30%). However, DHA levels in larvae at the end of the experiment correlated positively with survival. Artemia contained lower levels of AA than rotifers (1.5 cf. 3.0%), yet comparable levels of AA were found in rotifer-fed and Artemia-fed larvae. This also differed significantly between treatments, and correlated positively with survival. Article in Journal/Newspaper atlantic cod Gadus morhua Rotifer Oxford University Press ICES Journal of Marine Science 63 2 302 310 |
institution |
Open Polar |
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Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract We studied the performance of cod rearing in which live feed was given under three different essential fatty acid (EFA) enrichment regimes, using commercially available live-feed enrichments. We assessed the fatty acid profile [docosahexaenoic (DHA), eicosapentaenoic (EPA), and arachidonic acid (AA)] in larval somatic tissue, relative to its amounts in both rotifers and Artemia as well as to larval performance. Overall, percentage lipid level of each experimental diet for the trial was approximately 50%. Further, there were no significant differences in total fatty acid levels of larvae from each treatment at the end of the trial (mean = 444.76 μg fatty acid per mg lipid). However, during the rotifer phase, larvae from each treatment were able to incorporate comparable levels of %DHA, irrespective of levels in the diet. Despite this, the rotifer diet with more %DHA still promoted better larval growth than other treatments. Conversely, larvae from two of the treatments did not exhibit any accumulation of AA, reflecting levels found in the diet instead. However, between-tank differences in larval %AA showed improved growth during the rotifer period when larval %AA was high. Low ratios of EPA had no effect. During the Artemia phase, percentage levels of larval DHA decreased; there was no accumulation of DHA relative to dietary levels, which in Artemia were significantly lower than in rotifers (6 cf. 20–30%). However, DHA levels in larvae at the end of the experiment correlated positively with survival. Artemia contained lower levels of AA than rotifers (1.5 cf. 3.0%), yet comparable levels of AA were found in rotifer-fed and Artemia-fed larvae. This also differed significantly between treatments, and correlated positively with survival. |
format |
Article in Journal/Newspaper |
author |
Cutts, C.J. Sawanboonchun, J. Mazorra de Quero, C. Bell, J.G. |
spellingShingle |
Cutts, C.J. Sawanboonchun, J. Mazorra de Quero, C. Bell, J.G. Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
author_facet |
Cutts, C.J. Sawanboonchun, J. Mazorra de Quero, C. Bell, J.G. |
author_sort |
Cutts, C.J. |
title |
Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
title_short |
Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
title_full |
Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
title_fullStr |
Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
title_full_unstemmed |
Diet-induced differences in the essential fatty acid (EFA) compositions of larval Atlantic cod (Gadus morhua L.) with reference to possible effects of dietary EFAs on larval performance |
title_sort |
diet-induced differences in the essential fatty acid (efa) compositions of larval atlantic cod (gadus morhua l.) with reference to possible effects of dietary efas on larval performance |
publisher |
Oxford University Press (OUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1016/j.icesjms.2005.11.002 http://academic.oup.com/icesjms/article-pdf/63/2/302/29124250/63-2-302.pdf |
genre |
atlantic cod Gadus morhua Rotifer |
genre_facet |
atlantic cod Gadus morhua Rotifer |
op_source |
ICES Journal of Marine Science volume 63, issue 2, page 302-310 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1016/j.icesjms.2005.11.002 |
container_title |
ICES Journal of Marine Science |
container_volume |
63 |
container_issue |
2 |
container_start_page |
302 |
op_container_end_page |
310 |
_version_ |
1799476403619495936 |