饲料中裂殖壶藻不同添加量对凡纳滨对虾精荚再生的影响

打开文本图片集

关键词：凡纳滨对虾（Litopenaeus uannamei）；裂殖壶藻（Schizochytrium）；精英再生；精子中图分类号：S963 文献标志码：A 文章编号： ;1004-6755（2025）08-0069-06

Abstract：Schizochytrium is rich in docosahexaenoic aicd （DHA）.which exhibits a significant growth -promoting effect on the Litopenaeus vannamei. To investigate the effects of DHA on male development and spermatophore regeneration in Litopenaeus uannamei experimental diets were supplemented with 0% （Group A）， 3% （Group B）and 6% （Group C） Schizochytrium and fed to male shrimp with an initial body weight of （37，4±5，3）g .Results showed ： Compared with the control group with zero addition，the groups with 3% and 6% addition improved the quality of regenerated sperm pods，the percentage of live sperm and the total sperm count of male Litopenaeus vannaeus，among which the group with 3% addition was significantly higher than the control group （ .P<0.05 ）.With the extension of the breeding time，the quality of the regenerated sperm pods of the male shrimp in the control group on the lOth and 2Oth days of breeding was significantly lower than the initial value（ P<0.05： ， Compared with the initial values，the 3% addition group significantly improved the quality of regenerated sperm pods of male Litopenaeus vannamei at 1O days and 2O days （ P<0. 05 ），However，there was no significant difference between 10d and 20d ，The addition of the 6% group significantly improved the quality of the regenerated sperm pods of male Litopenaeus vannamei at 10 days （P<0.05） ， However，it decreased significantly after 2O days，showing no significant difference from the initial value. The study demonstrates that dietary supplementation with 3% Schizochytrium optimally supports gonadal development and spermatophore regeneration in male Litopenaeus uannamei ， providing a practical reference for its application in formulated broodstock feeds.

Key words：Litopenaeus vannamei ;Schizochytrium;spermatophore regeneration; sperm

凡纳滨对虾（Litopenaeusvannamei）是目前我国养殖面积最大和产量最高的对虾品种[1]。（剩余7792字）