Dietary glutamine supplementation improves growth performance and intestinal digestion/absorption ability in young hybrid sturgeon (Acipenser schrenckii female x Huso dauricus male)
文献类型: 外文期刊
作者: Qiyou, X. 1 ; Qing, Z. 1 ; Hong, X. 1 ; Chang'an, W. 1 ; Dajiang, S. 1 ;
作者机构: 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
2.NE Agr Univ, Anim Sci & Technol Coll, Harbin, Peoples R China
关键词: malondialdehyde: 542-78-9;glutathione: 70-18-8;dissolved oxygen;superoxide dismutase: 9054-89-1;EC 1.15.1.1;glutathione peroxidase: 9013-66-5;EC 1.11.1.9;digestive enzyme;glutamine: 6899-04-3;dietary supplement;sodium ion-potassium ionATPase: EC 3.6.3.9;alanyl-glutamine: dietary supplement;Solpro 508: dietary supplement;water temperature;growth performance;enzyme activity;feed conversion ratio;stocking density;weight gain rate;intestinal digestion;absorption ability
期刊名称:JOURNAL OF APPLIED ICHTHYOLOGY ( 影响因子:0.892; 五年影响因子:0.956 )
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收录情况: SCI
摘要: Exogenous glutamine (Gln) was evaluated for its effect on growth performance, intestinal structure and function in young hybrid sturgeon (Acipenser schrenckii female x Huso dauricus male). Seven basal diets supplemented with 0, 1.00% Alanyl-Glutamine (Aln-Gln, 63.02% Gln) and 1.00, 2.00, 3.00, 4.00, 5.00% Solpro 508 (30.04% Gln) (0.30, 0.60, 0.90, 1.20, 1.50 of Gln) were fed to fish (initial mean weight: 22.38 +/- 0.18 g) for 8 weeks, Water temperature was 22.4 +/- 1.0 degrees C, Dissolved oxygen was 7.56 +/- 0.76 mg L-1, the experiment was conducted in triplicates with an initial stocking density of 15 fish per aquarium. Supplementation with Aln-Gln and Solpro 508 increased weight gain rate, intestinal fold height, digestive enzyme and Na+, K+-ATPase activities, and decreased feed conversion ratio (P < 0.05). The intestinal crypt depth decreased significantly with increasing dietary Gln supplementation, and the activities of glutathione peroxidase and superoxide dismutase, as well as glutathione content were found to be significantly higher and malondialdehyde levels were lower (P < 0.05) with increasing dietary Gln supplementation. These results provide an experimental basis for the use of Gln in improving growth performance, intestinal structure and function of juvenile sturgeon, and 1.00% Alanyl-Glutamine and 3.00%similar to 5.00% Solpro 508 supplementation in the diet is recommended.
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关键词:amino acid;gene expression;glutamine;glutamine synthetase;mirror carp;-ketoglutarate