随着国民经济的发展 ,人民生活水平迅速提高 ,人们已不满足于食用“四大家鱼”等传统的水产品。具有更高营养价值的名特优水产品 ,如甲壳类的对虾、沼虾、河蟹和诸如鳗鲡、鳜鱼等名贵鱼类的人工养殖 ,呈现出十分迅猛的发展势头。这就对水产饲料业提出了更高要求。由于特种水产 With the development of the national economy, people’s living standards have rapidly risen and people are no longer satisfied with traditional aquatic products such as the “four major domestic fish”. Top-quality aquatic products with higher nutritional value, such as crustacean shrimp, marsh shrimp, crabs and the cultivation of valuable fish such as eel and anchovy, have shown a very rapid development momentum. This puts forward higher requirements for the aquatic feed industry. Due to special aquaculture