饲料中不饱和脂肪酸对斑节对虾幼虾存活、蜕皮和生长的影响

EFFECT OF DIETARY FATTY ACIDS ON SURVIVAL, MOLTING AND GROWTH OF JUVENILE TIGER SHRIMP,PENAEUS MONODON

在基础饲料中添加四种含不同脂肪酸的脂肪源组成四种试验饲料，对斑节对虾幼虾进行４５天的喂养试验。结果表明，饲料中含有高度不饱和脂肪酸（ＨＵＦＡ），能促进幼虾的生长和提高幼虾的成活率。幼虾摄食含有不同脂肪酸的饲料，虽然虾体内脂肪含量接近，但虾体脂肪酸含量差异显著。斑节对虾幼虾对１８碳以下的脂肪酸转化能力有限。在斑节对虾幼虾的养殖饲料中直接添加含有ＨＵＦＡ的脂肪源是必要的。

We have chosen four kinds of fat which contained different fatty acids and added each of them into basal diet to form four experimental diets. After 45 days feeding experiment on Juvenile of tiger shrimp, we have got the results as following: Feeding with the diet containing high unsaturated fatty acid, the juvenile of tiger shrimp can get more fast growth and higher survival ratio. Although the content of fat of the shrimp body is similar, the composition of fatty acids of the shrimp body is significantly different (F>F 0.05 ). The ability that the juvenile tiger shrimp transforms the fatty acids (less than 18 carbon) into HUFA is deficiency.