Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/73813
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
Immune System
Oreochromis Niloticus
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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