Effects of dietary n-3 to n-6 fatty acid ratios on spawning performance and larval quality in tongue sole Cynoglossus semilaevis

文献类型： 外文期刊

第一作者： Liang, M. -Q.

作者： Liang, M. -Q.;Lu, Q. -K.;Zheng, K. -K.;Wang, X. -X.;Qian, C.

作者机构：

关键词： broodstock diet;Cynoglossus semilaevis;egg quality;essential fatty acids

期刊名称：AQUACULTURE NUTRITION （ 影响因子：3.497； 五年影响因子：3.78 ）

ISSN： 1353-5773

年卷期： 2014 年 20 卷 1 期

页码：

收录情况： SCI

摘要： This study investigated the effect of n-3 to n-6 fatty acid ratios in broodstock diets on reproduction performance, fatty acid composition of eggs and gonads of tongue sole Cynoglossus semilaevis. Broodstock were fed five isonitrogenous and isoenergetic diets for 60days. The supplemented lipids were prepared by a combination of fish oil and soybean oil inclusion FO (fish oil); FSO1 (fish oil: soybean oil=7:1); FSO2 (fish oil: soybean oil=2.2:1); FSO3 (fish oil: soybean oil=1:1); FSO4 (fish oil: soybean oil=1:4.3) as lipid sources with different n-3 to n-6 fatty acid ratios 10.40, 5.21, 2.81, 1.71 and 0.87. Results showed that relative fecundity, fertilization rate and survival rate of larvae at 7days posthatching were all higher in broodstock fed FSO1 and FSO2 diet and significantly (P<0.05) decreased in groups fed FSO3 and FSO4 diets. The best result in starvation tolerance test was obtained in FSO2 diet. The present study suggests that n-3 and n-6 PUFA ratio in broodstock diet has a considerable effect on spawning performance, egg and larval quality for C.semilaevis.

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