罗非鱼是我国工厂化养殖的主要对象,在北方不少地区利用电厂余热及温泉地热养殖罗非鱼己获成功。近年来,随着生产的发展,各种人工配合饵料及其添加剂应运而生,然而它们是否能满足鱼类的营养需要、以及如何评价其营养价值,这都是养殖工作者所关注的问题。国内外许多学者曾对鱼类的血液指标进行过研究,薛艳庄等(1963),林光华(1979),赵明蓟(1979)和日本尾崎元雄等(1982),曾报导鱼类(青鱼、草 Tilapia is the main target of industrialized breeding in China. In many areas in northern China, tilapia have been successfully used to make use of waste heat from power plants and hot spring geothermal breeding. In recent years, with the development of production, a variety of artificial food and its additives have come into being. However, whether they can meet the nutritional needs of fish and how to evaluate their nutritional value are the concerns of farmer. Many scholars at home and abroad have studied the blood indexes of fish, such as Xue Yanzhuang et al. (1963), Lin Guanghua (1979), Zhao Mingji (1979) and Japan Ozaki Yoshio (1982)