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Use of supplemental amino acids on the success of reducing dietary protein levels for Jian carp (Cyprinus carpio var. Jian)

文献类型： 外文期刊

作者： Ren, Mingchun 1 ; He, Juyun 3 ; Liang, Hualiang 2 ; Ji, Ke 2 ; Ge, Xianping 1 ; Sun, Ajun 1 ; Pan, Liangkun 1 ; Masagound 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Minist Agr, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resource, Wuxi, Peoples R China

2.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi, Peoples R China

3.Evonik Degussa China Co Ltd, Guangzhou Branch, Guangzhou, Guangdong, Peoples R China

4.Evonik Nutr & Care GmbH, Hanau, Germany

关键词： essential amino acids; Jian carp (Cyprinus carpio var; Jian); protein reduction; supplementation

期刊名称：AQUACULTURE NUTRITION （ 影响因子：3.497； 五年影响因子：3.78 ）

ISSN： 1353-5773

年卷期： 2019 年 25 卷 3 期

页码：

收录情况： SCI

摘要： A feeding trial was conducted to investigate the effects of essential amino acids (EAA) supplementation on the success of dietary protein reduction for Jian carp (Cyprinus carpio var. Jian). Five diets were formulated including a positive control (Diet 1, 378.4 g/kg protein), a negative control (Diet 5, 289.8 g/kg protein) and three test diets (Diet 2-Diet 4, 340.4-299.0 g/kg protein supplemented with EAA). No significant decline of growth performance in fish fed decreased dietary protein with EAA supplementation, which were significantly higher than the negative control. The apparent digestibility coefficients (ADC) of protein and most EAAs were not significantly affected by the dietary treatments. Dietary treatments did not affect whole-body composition, but influenced protein and EAAs retentions. Total ammonia nitrogen (TAN) excretion decreased with the decreasing dietary protein, and the highest plasma ammonia content was observed in fish fed Diet 5. Plasma glucose concentration increased with the decreasing dietary protein reduction, while other plasma parameters were not affected by dietary treatments. These results indicated that low-protein diets (299.0 g/kg) supplemented with EAA can maintain protein, EAA digestibility and retention in Jian carp, and also has benefit in the reduction of TAN excretion.

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