Effect of native and modified starches on nutritional and physiological performance of wild juveniles of red grouper (Epinephelus morio)

• DOI: 10.19136/era.a5n15.1548
• Publication Date: 2018-09-14T11:49:59Z
• Authors: Ana Castillo; Leticia Callejas; Carlos Alfonso Ál...; Carlos Maldonado; Gerard Cuzon; Martha Gabriela G...
• Keywords: Epinephelus

The aim of this study was to evaluate carbohydratesutilization by wild red grouper Epinephelus morio.Juveniles were fed during 93 d on a selection starches: native raw cornstarch (RCS), waxy (WCS), potato starch (RPS) and gelatinized (GP) at 20% inclusion level. best growth obtained in fish either (p<0.05). Hepatosomatic index blood glucose (40 mg dL-1) similar as well hematocrit values (50%) (p>0.05), whereas glycogen content increased up 200 g-1with cornstarch. Specific activity a-glucosidase α-amylase remained stable (p>0.05). Hepatic glycolytic enzymes with (p<0.05); metabolic enzyme 6 phosphate dehydrogenase (G6P-DH) activated (p<0.05) while pyruvate kinase (PK) regardless treatments Hexokinase (HK1) glucokinase (GK) varied according carbohydrate source: higher cornstarches than starches Pentose monophosphate shunt (HMS) not altered sources In final, the low size granules from favored assimilation liver juveniles grouper.