饲料中氧化鱼油对真鲷幼鱼生长,存活及脂肪酸组成的影响

通过对饲料中添加氧化程度不同的鱼油，研究氧化鱼油对真鲷幼鱼生长、存活及肌肉和肝组织中脂肪酸组成的影响。结果表明，饲料中过氧化物比游离脂肪酸对真鲷幼鱼生长和存活的影响更显著。随着饲料中过氧化值的增高，真鲷幼鱼的增重率和存活率均下降，并且脂肪酸组成与饲料中脂类的氧化程度有关。实验得出了真鲷幼鱼增重率与饲料中脂类ＰＯＶ值的线性关系式。真鲷幼鱼摄取氧化鱼油后，其肝组织中过氧化物积累程度与饲料脂质氧化程度呈

EFFECTS OF OXIDIZED FISH OILS IN DIETS ON THE GROWTH, SURVIVAL AND FATTY ACID COMPOSITION OF JUVENILE RED SEABREAM PAGRUS MAJOR

The effects of oxidized fish oils in the growth, survival and fatty acid composition in fish muscle and liver of juvenile red seabream, pagrus major were studied by adding different oxidized levels fish oils into the experimental diets. The results showed as follows: the influence of dietary peroxide is more efficient than that of free fatty acid on the growth and survival of red seabream juvenile. The trial juvenile weight gain(% ) and survival ratio decrease when the dietary peroxide values increases. The faaty acid composition in fish muscles and livers are related with the oxidized levels oils in diets, where as the fat content in juvenile body varies a litte. The linear regression of the juvenlie weight gain rate and POV was detected. When the juvenile was fed the diet containg oxidixed fish oils, it would related to the accumulation of peroxide lipid in its livers.