Response of Antioxidant Enzymes and Digestive Enzymes to Temperature Stress in Lates Calcarifer Larvae

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dc.contributor.authorCui, P
dc.contributor.authorYin, S
dc.contributor.authorCheng, Z
dc.contributor.authorQiao, X
dc.contributor.authorZhou, Q.
dc.date.accessioned2019-01-08T20:43:09Z
dc.date.available2019-01-08T20:43:09Z
dc.date.issued2018
dc.description.abstractA 60-day feeding trial was conducted to evaluate the effects of dietary chromium methionine (Cr-Met) supplementation on growth performance, digestive enzymes, hematological characteristics, and carbohydrate metabolic key enzyme activities in juvenile common carp (Cyprinus carpio). Seven diets (32.2% crude protein, 6% crude lipids of dry matter) were formulated to contain graded levels of Cr3+ (0.31, 0.43, 0.57, 0.73, 1.13, 1.90 and 3.64 mg/kg, respectively). Each diet was randomly assigned to triplicate groups of 60 juvenile common carp (approximately 40.95±4.80 g), which were stocked in plastic tanks. The results indicated that the highest weight gain (WG), specific growth rate (SGR), feed efficiency (FE), and protein efficiency ratio (PER), were observed in fish fed the diet containing 1.13 mg/kg Cr3+. There were no significant differences in the wholebody compositions; however the glycogen levels in the muscle and hepatopancreas in fish fed the basal diet were lower than those fed the other diets. The insulin (INS) and glycogen (GC) concentrations in the serum were not significantly influenced by the dietary Cr-Met levels. However, fish fed the basal diet had higher glucose and cortisol concentrations, and lower insulin receptor (ISR) and LDH concentrations in the serum than those fed diets supplemented with Cr-Met. Fish fed the 1.13 mg/kg Cr3+ diet had significantly higher hexokinase (HK), 6-phosphofructo-1-kinase (6-PFK1), glucose-6-phosphate dehydrogenase (G6PDH), glycogen synthase (GS), and lower phosphoenolpyruvate carboxykinase (PEPCK) activities than those fed the basal diet. Based on the two-slope broken line model analysis between SGR and dietary Cr3+ levels, the optimal dietary Cr3+ supplement level was estimated to be 1.09 mg/kg for juvenile common carp.
dc.format.extent10 pages
dc.identifier.issn0792-156X
dc.identifier.urihttp://hdl.handle.net/10524/59392
dc.subjectchromium methionine
dc.subjectcommon carp
dc.subjectgrowth performance
dc.subjecthematological characteristics
dc.subjectcarbohydrate metabolic enzyme
dc.subject.lcshFish culture--Israel.
dc.subject.lcshFish culture
dc.titleResponse of Antioxidant Enzymes and Digestive Enzymes to Temperature Stress in Lates Calcarifer Larvae
dc.typeArticle
dc.type.dcmiText

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