Zhu Wanjia, Yi Yi, Liu Liwei, Zou Zhiwei, Chen Jianming, Su Jianmei
Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China.
College of Fisheries, Chinese Perch Research Center, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan 430070, China.
Animals (Basel). 2025 Jun 30;15(13):1926. doi: 10.3390/ani15131926.
An 8-week trial was conducted to investigate the effects of choline on the growth of Chinese perch (85.57 ± 0.54 g) with dietary choline supplementation at 0 (P0), 400 (P1), 800 (P2), 1600 (P3), 3200 (P4), and 6400 mg/kg (P5). Protein efficiency ratio and protein retention value (PRV) were higher in the P1-P4 groups than in the P0 group ( < 0.05). Compared to the P0 group, weight gain rate and specific growth rate (SGR) increased in the P2 and P3 groups ( < 0.05). The orexigenic gene expression level rose in the P2-P4 groups ( < 0.05). The expression level of the lipolysis-related gene or was elevated in the P2 and P4 groups ( < 0.05). Proteolysis-related gene (, , and ) expressions decreased in the P1-P4 groups, while and gene expressions increased in the P2 and P3 groups ( < 0.05). Broken-line analysis indicated that the optimal choline supplementation level for Chinese perch is 788.38 mg/kg based on SGR and 851.04 mg/kg based on PRV. The results demonstrate that moderate dietary choline supplementation enhances growth performance by promoting glucose and lipid catabolism and inhibiting protein catabolism in Chinese perch.
进行了一项为期8周的试验，以研究胆碱对体重85.57±0.54克的鳜鱼生长的影响，饲料中胆碱添加量分别为0（P0）、400（P1）、800（P2）、1600（P3）、3200（P4）和6400毫克/千克（P5）。P1 - P4组的蛋白质效率比和蛋白质保留值（PRV）高于P0组（P < 0.05）。与P0组相比，P2和P3组的增重率和特定生长率（SGR）升高（P < 0.05）。促食欲基因表达水平在P2 - P4组升高（P < 0.05）。脂肪分解相关基因或的表达水平在P2和P4组升高（P < 0.05）。蛋白水解相关基因（、和）的表达在P1 - P4组降低，而和基因表达在P2和P3组升高（P < 0.05）。折线分析表明，基于SGR，鳜鱼的最佳胆碱添加水平为788.38毫克/千克，基于PRV为851.04毫克/千克。结果表明，适度的饲料胆碱添加通过促进鳜鱼的葡萄糖和脂质分解代谢以及抑制蛋白质分解代谢来提高生长性能。
