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鱼类要不断地从外界获得营养物质用于满足生长、繁殖和生理活动的需要。能满足其需要而又无毒,鱼喜食的物质即为饲料。鱼摄食饲料之后,通过消化和吸收作用,将饲料中的营养物质转化为鱼体蛋白质、脂肪、糖等,为人们提供更多营养丰富的鱼产品。据分析和预测今后发展鱼类、虾、蟹类等养殖业最大的制约因素是饲料来源长期匮乏。饲料是发展养殖生产的物质基础,占养鱼生产成本的60%、养虾生产成本的70%左右。因此,有效解决饲料和合理利用
Fish must continually receive nutrients from outside to meet the needs of growth, reproduction and physical activity. To meet their needs but non-toxic, the fish eat the material is the feed. Fish feed on the digestion and absorption through the role of nutrients in the feed into fish protein, fat, sugar, etc., to provide people with more nutritious fish products. According to the analysis and prediction of the future development of fish, shrimp, crabs and other aquaculture industry, the biggest constraint is the long-term lack of sources of feed. Feed is the material basis for the development of aquaculture production, accounting for 60% of the cost of fish farming and about 70% of the cost of shrimp farming. Therefore, the effective solution to feed and rational use