|Title:||A short pulse of dietary algae boosts immune response and modulates fatty acid composition in juvenile Oreochromis niloticus||Authors:||García-Márquez, Jorge
Rico, Rosa María
Sánchez-Saavedra, M. del Pilar
Gómez-Pinchetti, Juan Luis
Acién, Francisco Gabriel
Figueroa, Félix L.
Alarcón, Francisco Javier
Moriñigo, Miguel Ángel
Abdala-Díaz, Roberto Teófilo
|UNESCO Clasification:||241707 Algología (ficología)||Keywords:||Algal Meal
Fatty Acid Composition
|Issue Date:||2020||Journal:||Aquaculture Research||Abstract:||Considering algae as novel dietary ingredient for aquafeeds, this study evaluates the effects of three algae, Ulva rigida, Crassiphycus corneus (formerly Hydropuntia cornea) and Scenedesmus almeriensis, on non-specific immune response and fatty acid profile in juvenile Nile tilapia (Oreochromis niloticus) after a short dietary administration period (30 days). U. rigida, C. corneus and S. almeriensis diets (UL-25, CC-25 and SC-25 respectively) included 25% dry algae biomass, whereas an algae-free diet was used as control. Biological samples were taken at 7, 15 and 30 days. Diet SC-25 significantly improved respiratory burst, alternative complement (ACH50) and lysozyme activity (p <.05). Regarding tissue fatty acid composition, SC-25 diet reduced the levels of saturated fatty acid in liver and muscle, while increased levels of C20:3n6 and eicosapentaenoic acid (EPA) in liver, and total n-3 content, arachidonic acid (ARA), EPA and docosahexaenoic acid (DHA) in muscle (p <.05). UL-25 and CC-25 groups showed the lowest levels of ARA in liver but increased levels of monounsaturated fatty acids. In conclusion, the results obtained lead us to consider the use of a short pulse of dietary algae is suited for improving the immune response and modulating the tissue fatty acid composition in this fish species.||URI:||http://hdl.handle.net/10553/73813||ISSN:||1355-557X||DOI:||10.1111/are.14781||Source:||Aquaculture Research [ISSN 1355-557X], (Julio 2020)|
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