三种脂肪源和两种降脂因子对鲈生长、体营养成分组和血清生化指标的影响

在人工配合饲料中加入3种脂肪源(鱼油、鱼油+玉米油1.34∶1、鱼油+豆油1.34∶1)和两种降脂因子(胆碱10g·kg-1、肉碱350mg·kg-1)饲喂鲈,并用冰鲜杂鱼饵料作为配合饲料的对照。经过8周的饲养,对鲈的生长情况、体营养成分组成和血清生化指标进行测定和分析。结果表明,鲈对脂肪肝的耐受性较差,长期大量投喂冰鲜杂鱼易诱发病变,肝脏对病变的敏感性高于肌肉;在满足必需脂肪酸需要量的情况下,不同脂肪源对鲈生长差异影响不大,但对体脂沉积有一定影响;胆碱和肉碱具有一定的降体脂作用。

The effects of three oil sources and two ant-i fat liver factors on the growth, nutrient composition and serum biochemistry indexes of Lateolabrax japonicus

Japanese sea bass ( Lateolabrax japonicus ) were fed by six diets for 8 weeks to study the effects of different diets on the growth, nutrient composition, fatty acids composition and serum biochemistry indexes of f ishes. Five formulated diets all contained about 9. 79% lipid content with different lipid sources: fish oil, mixture of f ish oil and corn oil ( 1. 34..1) , mixture of fish oil and soybean oil ( 1. 34..1) , the rest two formulated diets contained fish oil and more choline ( 100g..kg - 1 ) and carnitine ( 350mg..kg - 1 ) added respect ively. .. Iced trash fish.. ( Saurida tumbil ) were used as control diet . The results showed the tolerance to fat liver of Japanese sea bass was weak and the detrimental effects would be seen if f ishes were fed by a large quantity of .. iced trash f ish.. for long time. Different lipid sources made no significant difference on the growth of Japanese sea bass when its EFA requirements were met, but they could take some effects on the lipid deposit in f ishes. Choline and carnitine had some effects to reduce the lipid of the fish.