2026-05-28T22:47:18Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/265802026-02-03T11:29:43Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc García-Márquez, Jorge author Rico, Rosa Maria author Acién-Fernández, Francisco Gabriel author Mancera, Juan Miguel author López-Figueroa, Félix author Vizcaino, Antonio Jesús author Alarcón López, Francisco Javier author Moriñigo-Gutiérrez, Miguel Ángel author Abdala-Díaz, Roberto Teófilo author 2023-02-12 Given the potential of microalgae as new aquafeed ingredients, this study focuses on using a blend of microalgae, Tisochrysis lutea, Nannochloropsis gaditana, and Scenedesmus almeriensis, as a dietary ingredient for feeding Sparus aurata juveniles. The growth performance, carcass composition, tissue fatty acid profile, and intestinal microbiota were evaluated after a 30 day-feeding period. A microalgae-free diet was used as control, and three experimental diets were formulated containing 5%, 15%, and 25% of the microalgae blend (MB-5%, MB-15%, and MB-25%, respectively). After 7, 15, and 30 days of feeding experimental diets, biological samples were taken. Growth performance and nutrient utilization were not significantly modified at the end of the experiment. Microalgae inclusion tended to decrease body lipids and affected the fatty acid profile, especially MB-25 diet increased DHA levels. Diet MB-25 promoted appropriate microbial diversity, favoring the presence of probiotic bacteria, such as Lactobacillus, and significantly influencing the fatty acid composition and lipid metabolism in fish. In conclusion, using a short pulse of dietary administration of 25% microalgal blend in S. aurata modulates the intestinal microbiota and lipid composition while maintaining growth performance García-Márquez J, Rico RM, Acién FG, Mancera JM, Figueroa FL, Vizcaíno AJ, Alarcón FJ, Moriñigo MÁ, Abdala-Díaz RT. Dietary Effects of a Short-Term Administration of Microalgae Blend on Growth Performance, Tissue Fatty Acids, and Predominant Intestinal Microbiota in Sparus aurata. Microorganisms. 2023; 11(2):463. https://doi.org/10.3390/microorganisms11020463 https://hdl.handle.net/10630/26580 10.3390/microorganisms11020463 Microalgas Ácidos grasos Piscicultura Doradas - Alimentación Peces - Alimentación Dietary Effects of a Short-Term Administration of Microalgae Blend on Growth Performance, Tissue Fatty Acids, and Predominant Intestinal Microbiota in Sparus aurata