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Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge.
Food Chem 2013; 141(2):1424-32FC

Abstract

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 γ-linolenic acid (GLA) - from Echium plantagineum (EO), or rapeseed oil (RO) rich in α-linolenic acid (ALA), but a poor source of LC-PUFA and their precursors. After 6weeks, 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 3days post-infection (DPI) and were then restored to their previous concentrations at 7DPI. 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, TXB2 and 6-keto-PGF1α, 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.

Authors+Show Affiliations

National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, TAS 7250, Australia. ramez.alhazzaa@deakin.edu.auNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23790934

Citation

Alhazzaa, Ramez, et al. "Echium Oil Is Better Than Rapeseed Oil in Improving the Response of Barramundi to a Disease Challenge." Food Chemistry, vol. 141, no. 2, 2013, pp. 1424-32.
Alhazzaa R, Bridle AR, Mori TA, et al. Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge. Food Chem. 2013;141(2):1424-32.
Alhazzaa, R., Bridle, A. R., Mori, T. A., Barden, A. E., Nichols, P. D., & Carter, C. G. (2013). Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge. Food Chemistry, 141(2), pp. 1424-32. doi:10.1016/j.foodchem.2013.04.052.
Alhazzaa R, et al. Echium Oil Is Better Than Rapeseed Oil in Improving the Response of Barramundi to a Disease Challenge. Food Chem. 2013 Nov 15;141(2):1424-32. PubMed PMID: 23790934.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Echium oil is better than rapeseed oil in improving the response of barramundi to a disease challenge. AU - Alhazzaa,Ramez, AU - Bridle,Andrew R, AU - Mori,Trevor A, AU - Barden,Anne E, AU - Nichols,Peter D, AU - Carter,Chris G, Y1 - 2013/04/25/ PY - 2013/01/21/received PY - 2013/03/12/revised PY - 2013/04/16/accepted PY - 2013/6/25/entrez PY - 2013/6/26/pubmed PY - 2014/1/5/medline SP - 1424 EP - 32 JF - Food chemistry JO - Food Chem VL - 141 IS - 2 N2 - 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 γ-linolenic acid (GLA) - from Echium plantagineum (EO), or rapeseed oil (RO) rich in α-linolenic acid (ALA), but a poor source of LC-PUFA and their precursors. After 6weeks, 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 3days post-infection (DPI) and were then restored to their previous concentrations at 7DPI. 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, TXB2 and 6-keto-PGF1α, 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. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/23790934/Echium_oil_is_better_than_rapeseed_oil_in_improving_the_response_of_barramundi_to_a_disease_challenge_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(13)00498-6 DB - PRIME DP - Unbound Medicine ER -