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Effects of dietary myo-inositol on growth, chemical composition and plasma chemistry of Amur sturgeon Acipenser schrenckii

文献类型： 外文期刊

作者： Wang, Chang'an 1 ; Liu, Hongbai 1 ; Li, Jinnan 1 ; Wang, Liansheng 1 ; Zhao, Zhigang 1 ; Luo, Liang 1 ; Xu, Qiyou 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, 43 He Song St, Harbin 150070, Heilongjiang, Peoples R China

关键词： Sturgeon; Vitamin requirements; Proximate analysis; Haematology

期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.235； 五年影响因子：2.616 ）

ISSN： 0967-6120

年卷期： 2018 年 26 卷 6 期

页码：

收录情况： SCI

摘要： The present study was conducted to demonstrate the dietary myo-inositol requirement and its effects on the growth, proximate composition and blood chemistry of Amur sturgeon (Acipenser schrenckii). Triplicate groups of 30 fish (initial weight 11.90 +/- 0.12 g) were fed different diets containing graded levels of myo-inositol (28.75, 127.83, 343.83, 565.81, 738.15 and 936.28 mg kg(-1)) until satiation for 56 days. The fish were weighed after a 24-h fast, and six fish were used for whole body composition analysis. Further, the liver and muscle were sampled from another six fish for lipid analysis. The blood and liver were sampled from the remaining six fish for haematology and fatty acid analysis. The weight gain of fish increased with myo-inositol content, from the 28.75- to 343.83-mg kg(-1) myo-inositol treatment groups, and then stabilised. The liver lipid content and hepatosomatic index decreased significantly from 21.91 to 19.14% and from 3.20 to 2.76% with increased dietary myo-inositol supplementation, respectively. The whole body lipid content generally decreased from 6.33 to 5.55%. The content of liver-saturated fatty acids decreased significantly (28.13%) in the 936.28-mg kg(-1) treatment group. The content of plasma non-esterified fatty acids increased with the increase in dietary myo-inositol supplementation from 0.77 to 1.17 mmol L-1, whereas the content of triglycerides significantly decreased from 4.62 to 3.28 mmol L-1. In conclusion, the optimum myo-inositol requirement was found to be 336.1 mg kg(-1), based on weight gain in a two-slope quadratic broken-line model.

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