Effects of water temperatures and dietary protein levels on growth, body composition and blood biochemistry of juvenile GIFT tilapia (Oreochromis niloticus)
文献类型： 外文期刊
作者： Zeng, Nan-Nan 1 ; Jiang, Ming 1 ; Wen, Hua 1 ; Liu, Wei 1 ; Wu, Fan 1 ; Tian, Juan 1 ; Yu, Li-Juan 1 ; Lu, Xing 1 ; Guo, Zho 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Fish Nutr & Feed Div, Wuhan 430223, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries, Shanghai, Peoples R China
3.Guangxi Inst Fisheries, Nanning, Peoples R China
关键词： dietary protein requirement; proximate chemical composition; serum enzymes; thermal biology; water temperature
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：
页码：
收录情况： SCI
摘要： This study was carried out to evaluate the effects of water temperature (WT) and dietary protein levels on growth, body composition and blood biochemistry of GIFT tilapia (Oreochromis niloticus; initial average body weight: 38.75 +/- 0.61g,n = 20). The fish were fed with six diets contained graded levels of protein (209.6, 251.0, 302.4, 354.3, 401.9 and 456.8 g/kg) and raised in each of WT (22 degrees C, 28 degrees C and 34 degrees C) for 8 weeks. Results showed that the growth, feed utilization and protein efficiency were significantly increased with the increase of dietary protein level and followed by the latter platform at each WT. The fish raised at 28 and 34 degrees C showed similar growth performance, and their values were significantly higher than the fish raised at 22 degrees C (p< 0.05). The lipid contents in whole body were decreases with the increase of dietary protein level at each WT. However, the whole-body protein, ash and moisture contents were not affected by dietary protein level or WT (p> 0.05). The values of serum biochemical indices (ALP, ALT, AST and TCHO) were all decreased with the increase of dietary protein. The optimal dietary protein requirement for GIFT tilapia to achieve maximal growth performance is 374.4, 301.7 and 304.9 g protein/kg diet at 22, 28 and 34 degrees C, respectively.
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