Comparison and Analysis of Lipid Content of the Common Goldfish

Abstract

金鱼含有丰富的变异类型，是世界上最重要的观赏鱼之一。本实验比较分析了八个常见金鱼品种(草种为草金，蛋种为望天、虎头和水泡，文种为琉金、珍珠、狮头和鹤顶红)全鱼和不同组织的脂肪含量，发现金鱼不同品种在全鱼、腹肌、背肌、肝胰脏脂肪含量以及与脂肪代谢相关的血清生化指标上存在显著不同。这提示不同金鱼品种可能对饲料脂肪含量存在不同的需求，为金鱼不同品种专用饲料研究和开发提供了科学依据，同时也表明金鱼是研究鱼类脂肪代谢差异的良好模型。 Goldfish, one of the most important ornamental fish in the world, is extremely rich in morphologi-cal variations. The present study was conducted to analyze and compare the crude lipid content in whole fish, abdominal muscle, dorsal muscles, hepatopancreas and biochemical index of serum among eight goldfish breeds. Here, we report that both crude lipid content and distribution are varied between different goldfish breeds. This suggests that dietary lipid requirement might be different from breed to breed. Our results not only provide scientific basis for the research and development of special feed for different varieties of goldfish, but also indicate that goldfish is an excellent model for lipid metabolism research.