Effect of dietary carbohydrate levels on growth performance, body composition, intestinal and hepatic enzyme activities, and growth hormone gene expression of juvenile golden pompano, Trachinotus ovatus
Zhou, Chuanpeng1; Ge, Xianping1; Niu, Jin1; Lin, Heizhao1; Huang, Zhong1; Tan, Xiaohong1; linheizhao@163.com
2015
发表期刊AQUACULTURE
卷号437页码:390-397
摘要A growth trial was conducted to determine the optimum dietary carbohydrate level of juvenile golden pompano (Trachinotus ovatus). Six isonitrogenous and isoenergetic experimental diets (43% crude protein and 16.8 MJ kg(-1) diet) using corn starch as the carbohydrate source were formulated to contain six carbohydrate levels. Each diet was tested in triplicate for 8 weeks. Weight gain, specific growth rate, feed intake, protein efficiency ratio, hepatosomatic index, and viserosomatic index increased significantly as dietary starch levels increased from 0% to 16.8% (P < 0.05). The feed conversion ratio decreased significantly as dietary starch levels increased from 0% to 16.8% but increased as the level increased from 16.8% to 28%. Whole-body lipid and ash contents decreased significantly as dietary carbohydrate levels increased, whereas themoisture content showed the opposite trend (P < 0.05). Whole-body protein contents were not statistically different (P > 0.05) among all treatments. Carcass lipid content decreased but carcass protein content increased significantly as dietary carbohydrate levels increased (P < 0.05). Both moisture and ash contents of the carcass did not differ significantly (P < 0.05) among all treatments. Glycogen content in muscle and liver increased significantly as dietary carbohydrate levels increased (P < 0.05). Plasma glucose level increased and plasma cholesterol and triglyceride concentrations decreased significantly as dietary carbohydrate levels increased (P < 0.05). The intestinal amylase, alkaline phosphatase, and Na+, K+-ATPase activities all increased with dietary carbohydrate levels up to 11.2% (P < 0.05). However, lipase activity decreased significantly as dietary carbohydrate levels increased. There were no significant differences in intestinal protease activities among all treatments (P > 0.05). Hepatic hexokinase activity increased and hepatic glucose-6-phosphatase activity decreased significantly as dietary carbohydrate levels increased (P < 0.05). Hepatic phosphoenolpyruvate carboxykinase, pyruvate kinase, and malate dehydrogenase activities did not differ among the treatments (P > 0.05). Expression of hepatic growth hormone (GH) gene was positively related to growth performance. In conclusion, results suggested that the optimum carbohydrate level for juvenile golden pompano could be 11.2-16.8% of the diet. (C) 2015 Elsevier B.V. All rights reserved.
部门归属LMB
关键词Trachinotus Ovatus Dietary Carbohydrate Growth Performance Body Composition Enzyme Activities Gh Expression
学科领域Fisheries ; Marine & Freshwater Biology
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/14871
专题中科院海洋生物资源可持续利用重点实验室
通讯作者linheizhao@163.com
作者单位1.[Zhou, Chuanpeng
2.Niu, Jin
3.Lin, Heizhao
4.Huang, Zhong
5.Tan, Xiaohong] Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploit, Minist Agr, Guangzhou 510300, Guangdong, Peoples R China
6.[Zhou, Chuanpeng
7.Ge, Xianping] Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resource, Minist Agr, Wuxi 214081, Peoples R China
8.[Zhou, Chuanpeng] Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
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Zhou, Chuanpeng,Ge, Xianping,Niu, Jin,et al. Effect of dietary carbohydrate levels on growth performance, body composition, intestinal and hepatic enzyme activities, and growth hormone gene expression of juvenile golden pompano, Trachinotus ovatus[J]. AQUACULTURE,2015,437:390-397.
APA Zhou, Chuanpeng.,Ge, Xianping.,Niu, Jin.,Lin, Heizhao.,Huang, Zhong.,...&linheizhao@163.com.(2015).Effect of dietary carbohydrate levels on growth performance, body composition, intestinal and hepatic enzyme activities, and growth hormone gene expression of juvenile golden pompano, Trachinotus ovatus.AQUACULTURE,437,390-397.
MLA Zhou, Chuanpeng,et al."Effect of dietary carbohydrate levels on growth performance, body composition, intestinal and hepatic enzyme activities, and growth hormone gene expression of juvenile golden pompano, Trachinotus ovatus".AQUACULTURE 437(2015):390-397.
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