Effect of the arachidonic acid/vitamin E interaction on the immune response of juvenile Atlantic salmon (Salmo salar) challenged against Piscirickettsia salmonis

dc.creatorDantagnan Dantagnan, Patricio
dc.creatorGonzález Alfaro, Katerina
dc.creatorHevia, M.
dc.creatorBetancor, M. B.
dc.creatorHernández Arias, Adrián
dc.creatorBórquez Ramírez, Aliro
dc.creatorMontero, D.
dc.date2017
dc.date2021-04-30T16:59:11Z
dc.date2021-04-30T16:59:11Z
dc.date.accessioned2021-06-14T22:07:31Z
dc.date.available2021-06-14T22:07:31Z
dc.identifierAQUACULTURE NUTRITION,Vol.23,710-720,2017
dc.identifierhttp://repositoriodigital.uct.cl/handle/10925/3703
dc.identifier10.1111/anu.12438
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3301073
dc.descriptionAtlantic salmon (Salmo salar) were fed 6 experimental dietscontaining three levels of arachidonic acid (ARA) (0.18 g kg(-1), 0.28 g kg(-1) and 0.63 g kg(-1) for low, medium and high levels, respectively) and two levels of vitamin E (150 and 730mgkg(-1) for low and high levels, respectively). At the end of the experimental period, fatty acids in the liver and immunity markers (lysozyme activity, respiratory burst and phagocytic activity) were determined and fish subjected to a challenge test against the salmonid rickettsial syndrome (SRS) pathogen. ARA, vitamin E or their interaction did not exert an effect on fish performance, whereas ARA alone clearly increased the deposition of ARA. Dietary vitamin E only enhanced liver vitamin E deposition, while the interaction of ARA and vitamin E influenced lysozyme activity and EPA/ARA ratio pointing out the effect of both nutrients on the fish immune system and metabolism. Only the medium concentration contributed to reducing mortality when the fish were exposed to the SRS pathogen. In conclusion, different levels of supplementation with ARA and vitamin E in the diet had no effect on productivity, but did have effects on immune markers and cumulative mortality when fish were exposed to the SRS pathogen.
dc.languageen
dc.publisherWILEY
dc.sourceAQUACULTURE NUTRITION
dc.subjectarachidonic acid
dc.subjectAtlantic salmon
dc.subjectdisease resistance
dc.subjectfish nutrition
dc.subjecthealth
dc.subjectvitamin E
dc.titleEffect of the arachidonic acid/vitamin E interaction on the immune response of juvenile Atlantic salmon (Salmo salar) challenged against Piscirickettsia salmonis
dc.typeArticle


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