The fingerling grass carp fed a diet without choline supplement had a poorer growth, lower feed efficiency, fatty liver and a decreasing of plasma total lipid (PTL), triacylglycerol (PTG),cholesterol (PTC) and phospholipid (PPL).

• 用不含胆碱的饲料饲养草鱼鱼种，草鱼鱼种生长减慢，饲料效率降低，肝脏脂肪浸润、血浆总脂、甘油三脂、胆固醇和磷脂含量降低。