Vitamin C requirement of adult genetically improved farmed tilapia, Oreochromis niloticus
文献类型: 外文期刊
作者: Wu, Fan 1 ; Huang, Feng 1 ; Wen, Hua 1 ; Jiang, Ming 1 ; Liu, Wei 1 ; Tian, Juan 1 ; Yang, Chang Geng 2 ;
作者机构: 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr, Wuhan, Peoples R China
2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat & Utilizat, Minist Agr, Wuhan, Peoples R Ch
关键词: Vitamin C;Tilapia;Requirement;Growth;Performance;Diet;L-gulonolactone oxidase
期刊名称:AQUACULTURE INTERNATIONAL ( 影响因子:2.235; 五年影响因子:2.616 )
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收录情况: SCI
摘要: A 10-week growth experiment was performed to determine the vitamin C requirement of adult genetically improved farmed tilapia (GIFT), Oreochromis niloticus. Fish with an initial body weight of 220.06 +/- A 6.10 g were cultured in cages (20 fish per cage) and fed semi-purified diets containing different levels of vitamin C: 10.22 (control diet), 27.81, 48.49, 95.79, 187.66, and 382.54 mg vitamin C kg(-1). l-gulonolactone oxidase (GLO) was not detected in kidney or liver of tilapia. The weight gain (WG) of the 48.49, 95.79, 187.66, and 382.54 mg kg(-1) groups was significantly higher than that of the control group. Feed efficiency and body composition of tilapia were not significantly different among the groups (P > 0.05). The vitamin C contents in liver and muscle increased at the beginning and reached a plateau at a parts per thousand yen187.66 mg kg(-1). Regression analyses revealed that the vitamin C requirement of adult GIFT is 53.05, 180.53, and 185.86 mg kg(-1) based on WG, hepatic, and muscle vitamin C content, respectively.
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