Dietary folic acid (FA) requirement of a genetically improved Nile tilapia Oreochromis niloticus (Linnaeus, 1758)
文献类型： 外文期刊
作者： Wu, J. -P. 1 ; Wu, F. 1 ; Jiang, M. 1 ; Wen, H. 1 ; Wei, Q. -W. 1 ; Liu, W. 1 ; Tian, J. 1 ; Huang, F. 1 ; Yang, C. -G. 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr, Key Lab Freshwater Biodivers Conservat & Utilizat, Wuhan, Hubei, Peoples R China
期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）
ISSN： 0175-8659
年卷期： 2016 年 32 卷 6 期
页码：
收录情况： SCI
摘要： The present study was conducted to determine the dietary folic acid (FA) requirement of genetically improved Nile tilapia, Oreochromis niloticus. Experimental diets were supplemented with 0.04, 0.22, 0.48, 0.96, 2.25, or 4.07mg/kg FA, respectively, and fed to three replicate groups of 15 tilapia (mean initial weight=60.23 +/- 2.60g; mean +/- SD) for 12weeks. Results showed that the weight gain rate increased linearly with increasing dietary FA from 0.04 to 0.40mg/kg, then remained stable with higher supplementation. Similarly, hepatic FA concentration, red blood cell count (RBC), hemoglobin concentration (HB) and hematocrit (HCT) all markedly increased in fish fed with 4.07mg/kg FA compared to those fed a control diet (p<.05). Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities decreased with increasing dietary FA (p<.05). The FA requirement was estimated to be 0.4mg/kg based on weight gain rate, and 0.7mg/kg based on liver FA accumulation.
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