Article ID Journal Published Year Pages File Type
8495161 Aquaculture 2014 8 Pages PDF
Abstract
A formulated diet for Octopus maya that provoked a growth rate and survival higher than that observed when animals were fed diet based only on freeze-dried crab is reported for first time. Early juveniles (0.37 g wet weight; ww) of O. maya were used. Diets were made by mixing freeze-dried ingredients (crab paste; Callinectes spp. meal; (Cr), squid meal; Dosidicus gigas (Sq) and silages (Si)) all enriched with a mix of vitamins and minerals, and bound with gelatin, forming a paste. At the end of the experiment, Crab-Squid (CrSq) was the only diet that showed 100% survival, followed by Crab (Cr) (55%). The highest specific growth rate (SGR, % day− 1) was obtained in animals fed CrSq (3.04% day− 1) followed by animals fed Cr (1.96% day− 1) and Squid (Sq) (1.09% day− 1). Marginal (0.36% day− 1) and negative (− 0.73% day− 1) SGR values were observed in animals fed Silage-Crab-Squid (SiCrSq) and Silage-Squid (SiSq). Principal component analysis (PCA) showed that muscle glycogen and DG protein contents had the strongest influence on the separation of groups in a canonical analysis and were positively related with growth indicating that CrSq diets have the best nutritional characteristics to satisfy growth requirements. These results were confirmed when energy balance was measured.
Related Topics
Life Sciences Agricultural and Biological Sciences Aquatic Science
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