Effects of Dietary Glycerol Monolaurate on Growth, Antioxidant Capacity and Lipid Metabolism in Cage-Farmed Pompano (Trachinotus ovatus) Juveniles

Glycerol monolaurate (GML), a representative fatty acid glyceride, was used to promote growth. This study investigated the effects of GML in diets on growth, serum biochemical parameters, antioxidant capacity, liver morphology and lipid metabolism for juvenile pompano Trachinotus ovatus . Six groups T. (mean weight = 14.00 ± 0.70 g) were fed with six diets, containing varying levels 0.00% (G0), 0.05% (G5), 0.10% (G10), 0.15% (G15), 0.20% (G20), 0.25% (G25) 8 weeks. Fish reared floating cages (length: 1 m; width: height: 2 m). The highest gain rate (WGR), specific growth (SGR), protein deposit (PDR) observed G15 group ( P < 0.05). Hepatic glutathione peroxidase, total capacity superoxide dismutase activities significantly increased G10 compared G0 0.05), whereas hepatic malondialdehyde (MDA) reduced alkaline phosphatase activity higher G5, G10, G15, G20 than AKP group. Alanine aminotransferase (ALT) lower G20, G25 addition feed triglyceride (TG) content In comparison group, had cholesterol high-density lipoprotein Low-density G5 Serious vacuolation occurred but cell boundaries all added obvious, intracellular vacuolization decreased. As level increased, carnitine palmitoyl-transferase Ι mRNA up-regulated expression synthesis that sterol regulatory element-binding protein-Ι Based broken-line model WGR PDR corresponding levels, optimum dietary 0.14%-0.16% conclusion, improved performance, ability, protected