2026-06-01T17:38:55Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/314392026-02-03T11:32:34Zcom_10630_2254col_10630_37953

Potential Effects of Microalgae-Supplemented Diets on the Growth, Blood Parameters, and the Activity of the Intestinal Microbiota in Sparus aurata and Mugil cephalus. García-Márquez, Jorge Domínguez-Maqueda, Marta Torres-Rodríguez, Miguel Cerezo Ortega, Isabel M. Ramos, Eva Alarcón, Francisco Javier Mancera, Juan Miguel Martos-Sitcha, Juan Antonio Moriñigo-Gutiérrez, Miguel Ángel Balebona-Accino, María del Carmen Peces - Crecimiento Doradas - Crecimiento Mújoles - Crecimiento This work aimed to assess the suitability of a microalgal blend as a dietary ingredient for feeding juveniles of marine carnivorous and herbivorous teleost, as is the case of Sparus aurata and Mugil cephalus, respectively, and to isolate microorganisms from different media and characterize them on the base of their enzymatic activities and their antagonism against important fish pathogens. Thirty juveniles of each species (70 3.2 g S. aurata mean weight and 47 2.8 g M. cephalus mean weight) were distributed in four tanks (15 individuals each) corresponding to four independent dietary treatments (control and microalgae diets designed for each species). Fish were fed their corresponding diets ad libitum for 108 days. At the end of the trial, fish were weighed, and plasma, liver, perivisceral fat, and the entire intestines were obtained for the evaluation of growth performance and metabolic assessment. Furthermore, 117 bacterial strains were isolated in different culture media from the gastrointestinal tract of S. aurata fed the microalgae blend and further characterized for their potential use as probiotics in aquaculture. S. aurata fed the microalgae-supplemented diet (25% dietary inclusion) showed a significant increase in weight gain, specific growth rate, feed efficiency, hepatosomatic, and intestine length indices. However, growth performance and somatic indices in M. cephalus were not affected by the experimental diets. Plasma samples from S. aurata fed the microalgal diet revealed higher levels of glucose and triglycerides and a decrease in cortisol levels. No significant differences were found in any biochemical parameters among the experimental diets in M. cephalus. In conclusion, both species demonstrated a favorable adaptation to the nutritional formulation employed [...] 2024-05-30T08:28:07Z 2024-05-30T08:28:07Z 2024-05-30T08:28:07Z 2023-08-09 journal article García-Márquez, J., Domínguez-Maqueda, M., Torres, M., Cerezo, I. M., Ramos, E., Alarcón, F. J., Mancera, J. M., Martos-Sitcha, J. A., Moriñigo, M. Á., & Balebona, M. C. (2023). Potential Effects of Microalgae-Supplemented Diets on the Growth, Blood Parameters, and the Activity of the Intestinal Microbiota in Sparus aurata and Mugil cephalus. Fishes, 8(8), 409. https://doi.org/10.3390/fishes8080409 https://hdl.handle.net/10630/31439 10.3390/fishes8080409 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI