Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge
Pathogen infection stimulates the fatty acid (FA) metabolism and the production of pro-inflammatory derivatives of FA. Barramundi, Lates calcarifer, was fed on a diet rich in preformed long-chain (=C20) polyunsaturated fatty acids (LC-PUFA) from fish oil (FO), to compare with diets containing high l...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2013
|
| Online Access: | http://hdl.handle.net/20.500.11937/22999 |
| _version_ | 1848751029501296640 |
|---|---|
| author | Alhazzaa, Ramez Bridle, A. Mori, T. Barden, A. Nichols, P. Carter, C. |
| author_facet | Alhazzaa, Ramez Bridle, A. Mori, T. Barden, A. Nichols, P. Carter, C. |
| author_sort | Alhazzaa, Ramez |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Pathogen infection stimulates the fatty acid (FA) metabolism and the production of pro-inflammatory derivatives of FA. Barramundi, Lates calcarifer, was fed on a diet rich in preformed long-chain (=C20) polyunsaturated fatty acids (LC-PUFA) from fish oil (FO), to compare with diets containing high levels of C18 precursors for LC-PUFA - stearidonic (SDA) and ?-linolenic acid (GLA) - from Echium plantagineum (EO), or rapeseed oil (RO) rich in a-linolenic acid (ALA), but a poor source of LC-PUFA and their precursors. After 6 weeks, when growth rates were similar amongst the dietary treatments, a sub-lethal dose of Streptococcus iniae was administered to half of the fish, while the other half were maintained unchallenged and were pair-fed with the infected fish. Under a disease challenge situation, the tissue FA depots depleted at 3 days post-infection (DPI) and were then restored to their previous concentrations at 7 DPI. During the infection period, EO fish had a higher content of n3 and n6 PUFA in their tissues, higher n3:n6 PUFA ratio and reduced levels of the eicosanoids, TXB 2 and 6-keto-PGF1a, in their plasma compared with RO fish. Fish fed on FO and EO had a longer lasting and enduring response in their FA and eicosanoid concentrations, following a week of bacterial infection, compared with those fed on RO. EO, containing SDA and GLA and with a comparatively higher n3:n6 PUFA ratio, proved more effective than RO in compensating for immunity stress. © 2013 Elsevier Ltd. |
| first_indexed | 2025-11-14T07:46:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-22999 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:46:14Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-229992017-09-13T13:59:01Z Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge Alhazzaa, Ramez Bridle, A. Mori, T. Barden, A. Nichols, P. Carter, C. Pathogen infection stimulates the fatty acid (FA) metabolism and the production of pro-inflammatory derivatives of FA. Barramundi, Lates calcarifer, was fed on a diet rich in preformed long-chain (=C20) polyunsaturated fatty acids (LC-PUFA) from fish oil (FO), to compare with diets containing high levels of C18 precursors for LC-PUFA - stearidonic (SDA) and ?-linolenic acid (GLA) - from Echium plantagineum (EO), or rapeseed oil (RO) rich in a-linolenic acid (ALA), but a poor source of LC-PUFA and their precursors. After 6 weeks, when growth rates were similar amongst the dietary treatments, a sub-lethal dose of Streptococcus iniae was administered to half of the fish, while the other half were maintained unchallenged and were pair-fed with the infected fish. Under a disease challenge situation, the tissue FA depots depleted at 3 days post-infection (DPI) and were then restored to their previous concentrations at 7 DPI. During the infection period, EO fish had a higher content of n3 and n6 PUFA in their tissues, higher n3:n6 PUFA ratio and reduced levels of the eicosanoids, TXB 2 and 6-keto-PGF1a, in their plasma compared with RO fish. Fish fed on FO and EO had a longer lasting and enduring response in their FA and eicosanoid concentrations, following a week of bacterial infection, compared with those fed on RO. EO, containing SDA and GLA and with a comparatively higher n3:n6 PUFA ratio, proved more effective than RO in compensating for immunity stress. © 2013 Elsevier Ltd. 2013 Journal Article http://hdl.handle.net/20.500.11937/22999 10.1016/j.foodchem.2013.04.052 restricted |
| spellingShingle | Alhazzaa, Ramez Bridle, A. Mori, T. Barden, A. Nichols, P. Carter, C. Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title | Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title_full | Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title_fullStr | Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title_full_unstemmed | Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title_short | Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| title_sort | echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge |
| url | http://hdl.handle.net/20.500.11937/22999 |