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Dietary myo-inositol requirements of juvenile hybrid sturgeon (Acipenser baerii female x A. schrenckii male)

文献类型: 外文期刊

作者: Li, Yan 1 ; Wu, Jinping 2 ; Chen, Xihua 1 ; Chu, Zhipeng 2 ; Jin, Jiali 2 ; Tang, Dan 2 ;

作者机构: 1.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China

2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

关键词: growth; hybrid sturgeon (Acipenser baerii female x A; schrenckii male); myo-inositol; requirement

期刊名称:AQUACULTURE RESEARCH ( 影响因子:2.082; 五年影响因子:2.415 )

ISSN: 1355-557X

年卷期:

页码:

收录情况: SCI

摘要: This study was conducted to determine the optimal dietary myo-inositol (MI) requirement of juvenile hybrid sturgeon (Acipenser baerii female x A. schrenckii male). Fish with an initial average body weight of 28.28 +/- 0.41 g were randomly divided into six groups with three repetitions in each group and fed the experimental diets with different graded MI concentrations (70.2, 130.0, 270.2, 443.0, 1,096.6 and 1997.3 mg/kg) three times per day for 12 weeks. The results showed that with the increase in dietary MI level from 70.2 mg/kg to 443.0 mg/kg, weight gain (WG) was increased significantly (p < .05); however, when the MI level was further increased, there was no significant difference in weight gain rate (WG) over time (p > .05). Specific growth rate (SGR) showed a similar trend. The feed conversion ratio (FCR), survival rate (SR), hepatosomatic index (HSI), viscerasomatic index (VSI) and condition factor (CF) were not affected by dietary MI supplementation (p > .05). Dietary MI did not affect whole-body and muscle crude protein and ash content (p > .05), while dietary MI significantly affected the muscle and whole-body crude lipid and moisture content (p < .05). Moreover, serum triglyceride (TG), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were decreased by increasing dietary MI levels. Total antioxidant capacity (T-AOC), malonic dialdehyde (MDA) and superoxide dismutase (SOD) activities in the liver were also affected by the dietary MI (p < .05). In summary, this study indicated that the optimal dietary MI requirement for juvenile hybrid sturgeon (Acipenser baerii female x A. schrenckii male) was 335.84 mg/kg and 590.65 mg/kg based on the maximum WG and liver MI accumulation indices respectively.

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