一、海水鱼类营养需要特点 蛋白质、糖和脂类是海水鱼类的主要营养来源，维生素、无机盐等在维持鱼类正常的新陈代谢中也有重要作用。海水经济鱼类多属杂食性或肉食性鱼类，其消化道的长度与体长之比，一般较陆生畜禽小得多，并有其独特的消化代谢特点，因而决定了其对营养需求 First, the characteristics of marine fish nutrition needs Protein, sugar and lipid are the main source of nutrients for marine fish, vitamins, inorganic salts, etc. in maintaining the normal metabolism of fish also has an important role. Seawater Fish are mostly omnivorous or carnivorous fish, the digestive tract length and body length ratio is generally much smaller than the land-based livestock and poultry, and has its unique digestive and metabolic characteristics, which determines its nutrition demand