RT journal article
T1 Low dietary inclusion of nutraceuticals from microalgae improves feed efficiency and modifies intermediary metabolisms in gilthead sea bream (Sparus aurata)
A1 Perera Bravet, Erick
A1 Sánchez Ruiz, David
A1 Sáez, María Isabel
A1 Galafat, Alba
A1 Barany Ruiz, Andre
A1 Fernández Castro, Miriam
A1 Vizcaíno, Antonio Jesús
A1 Fuentes, Juan
A1 Martínez, Tomás Francisco
A1 Mancera Romero, Juan Miguel
A1 Alarcón, Francisco Javier
A1 Martos Sitcha, Juan Antonio
A2 Biología
AB The aim of this work was to evaluate two functional feeds for the gilthead seabream, Sparus aurata, containing low inclusion of two microalgae-based products (LB-GREENboost, LBGb; and LB-GUThealth, LBGh). Fish (12-13 g) were fed for 13 weeks a control diet or one of the four diets supplemented with both products at 0.5% or 1%. LBGb and LBGh did not affect specific growth rate or survival, but increased feed efficiency by decreasing feed intake and enlarging the intestines. LBGb increased hepatosomatic index and reduced cortisol levels in plasma, while both products lowered plasma lactate. Extensive metabolite and metabolic enzyme profiling revealed that microalgae supplementations, especially 1% LBGh: (i) decrease plasma lactate and increase hepatic glycogen, (ii) reduce hepatic gluconeogenesis, (iii) enhance hepatic lipogenic activity and lipid secretion, (iv) led fish to double triglyceride content in muscle and to stimulate its lipid oxidative capacity, and (v) increase the content of monounsaturated fatty acids and the omega-3 alpha-linolenic acid in muscle. This study demonstrates that both microalgae-based products are suited to improve feed efficiency and orchestrate significant changes in the intermediary metabolism in gilthead seabream juveniles.
PB NATURE RESEARCH
SN 2045-2322
YR 2020
FD 2020-10
LK http://hdl.handle.net/10498/24079
UL http://hdl.handle.net/10498/24079
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026