斑节对虾幼虾期对饲料不饱和脂肪酸的营养需求

Nutrient Requirements of Juvenile of Penaem monodon for Unsaturated Fatty Acids

用正交设计法对斑节对虾幼虾期饲料油脂源中六种不饱和脂肪酸进行六因素二水平的设计，分成八组进行对比饲养试验。结果表明，Ｃ＿（１６：ｎ）、Ｃ＿（２２～２４）、Ｃ＿（１８：２ｎ）对对虾的增长率影响比较大，Ｃ＿（１６：ｎ）、Ｃ＿（２２～２４）、Ｃ＿（２０：１～５ｎ）和Ｃ＿（１８：ｎ）对对虾的存活率影响比较大。饲料中各不饱和脂肪酸Ｃ＿（１６：ｎ）、Ｃ＿（１８：ｎ）、Ｃ＿（１８：２ｎ）、Ｃ＿（１８：３ｎ）、Ｃ＿（２０：１～５ｎ）和Ｃ＿（２２～２４）最适含量分别为０．４１％、１．９２％、１．８０％、０．３１％、１．０５％、２．５８％。Ｃ＿（１８：２ｎ）、Ｃ＿（１８：３ｎ）的比值在５．８１～６．７０之间。

篢he dietary test of juvenice Penaeus monodon was designed by means of thegradient method for six kinds of unsatarated fatty acids．The gradient method consists ofsix facts and two levels．The compariedly feeding teed was dirided into eight groups.Theresult show that C16:n、C22～24 and C18：2n are more effective on the length gain rate.C16:n、C22～24、C20：1～5n and C18：n are mone effective on the Survival ratio. The appropriate contentof C16:n、C18:n、C18:2n、C18:3n、C20:1～5n and C22～24 are 0．41％、1．92％、1．80％0．31％、1． 05％ and 2．58％ respectively. The rate of C18:2n to C18:3n is between 5．81 and 6．70.