Dietary folic acid (FA) requirement of a genetically improved Nile tilapiaOreochromis niloticus(Linnaeus, 1758)

• DOI: 10.1111/jai.13151
• Publication Date: 2016-10-13T15:17:25Z
• Authors: J.-P. Wu; F. Wu; M. Jiang; H. Wen; Q.-W. Wei; W. Liu; J. Tian; F. Huang; C.-G. Yang
• Keywords: Nile tilapia

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 4.07 mg/kg FA, respectively, and fed three replicate groups 15 tilapia (mean initial weight = 60.23 ± 2.60 g; mean SD) for 12 weeks. Results showed that gain rate increased linearly increasing FA from 0.04 0.40 mg/kg, then remained stable higher supplementation. Similarly, hepatic concentration, red blood cell count (RBC), hemoglobin concentration (HB) hematocrit (HCT) all markedly in fish compared those a control diet (p < .05). Serum aspartate aminotransferase (AST) alanine (ALT) activities decreased estimated be 0.4 based on rate, 0.7 liver accumulation.