飼料中裂殖壺藻不同添加量對(duì)凡納濱對(duì)蝦精莢再生的影響

打開文本圖片集

關(guān)鍵詞：凡納濱對(duì)蝦（Litopenaeus uannamei）；裂殖壺藻（Schizochytrium）；精英再生；精子中圖分類號(hào)：S963 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)： ;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

凡納濱對(duì)蝦（Litopenaeusvannamei）是目前我國(guó)養(yǎng)殖面積最大和產(chǎn)量最高的對(duì)蝦品種[1]。（剩余7792字）