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一、引言 动物蛋白为畜禽水产饲料的必需组分。据测算,江苏省2000年需109.5万吨,而可供给能力仅为需要量的13.7％,开发饲用动物蛋白资源已成为养殖业发展中亟待解决的重大课题。1985～1989年对动物蛋白资源大瓶螺(福寿螺)的系统研究业已明确以下几点: 1.蛋白质含量和产量潜力很高。鲜基的出肉率为70％,干基(105℃)蛋白质含量55.2％,低于秘鲁鱼粉(63％),高于国产鱼粉(45％)。氨基酸种类齐全,比值高于秘鲁鱼粉。精养最高亩产达8012千克,一般亩产4000千克左右。
I. Introduction Animal protein is an essential component of animal feed for aquatic products. It is estimated that in Jiangsu Province in 2009, 1,059,000 tons will be needed, while the supply capacity is only 13.7% of the required amount. Developing the animal protein resources has become a major issue to be solved urgently in the development of aquaculture. From 1985 to 1989, the systematic study on the animal protein resource Magnaporthe grosvenorii had made the following clear points: 1. The protein content and the yield potential are very high. The rate of fresh meat was 70%, protein content of dry basis (105 ℃) was 55.2%, lower than Peruvian fish meal (63%) and domestic fish meal (45%). A wide range of amino acids, the ratio higher than the Peruvian fish meal. Intensive cultivation of up to 8012 kilograms per mu, generally about 4000 kilograms per mu.