Fish meal substitute as well as preparation method and application thereof

The invention provides a fish meal substitute as well as a preparation method and application thereof, and belongs to the technical field of aquatic product breeding feed. The fish meal substitute comprises chlorella powder and compound Chinese herbal medicines. The fish meal substitute provided by the invention can completely replace fish meal in traditional largemouth bass feed, improve the body color and meat color of largemouth bass, improve muscle nutritional ingredients, increase muscle pH, increase muscle texture parameters and muscle fiber density and reduce MSTN gene expression, so that the muscle quality of largemouth bass is improved. 本发明提供了一种鱼粉替代物及其制备方法和应用，属于水产品养殖饲料技术领域。本发明所述鱼粉替代物包括小球藻粉和复方中草药。本发明提供的鱼粉替代物能够完全替代传统大口黑鲈饲料中的鱼粉，改善大口黑鲈的体色和肉色，改善肌肉营养成分，提高肌肉pH，提高肌肉质构参数及肌纤维密度并下调MSTN基因表达，从而提高大口黑鲈的肌肉品质。