Effect of Long-Term Feeding with Dried Microalgae Added Microdiets on Growth and Fatty Acid Composition of Gilthead Sea Bream (Sparusaurata L., 1758)

The aim of the present study was to investigate the effects of replacing fish oil by different microalgae products on the growth performance and fatty acid composition of gilthead sea bream (0.02 +/- 0.00 g) during 90 days of post larvae and weaning period. Four diets were evaluated: control diet was exclusively based on fishoil; SBAE diet included the commercial product SBAE (R), which consists of four microalgae: Tetraselmissuecica, Isochrysis sp., Nannochloropsisoculata and Phaeodactylumtricornutum; Algamac diet included the commercial product Algamac 3050, which consists solely of the microalgae Schizocthytrium sp., and Mix diet that consisted of a mixture of both commercial products in equal amounts, SBAE (R) and Algamac (R). At the end of the feeding trial, the highest weight gain was obtained in Control (1.34 +/- 0.00 g) and Mix (1.34 +/- 0.03 g) groups(P