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Effects of dietary chlorogenic acid on growth performance, antioxidant capacity of white shrimp Litopenaeus vannamei under normal condition and combined stress of low-salinity and nitrite

立陶宛 小虾 生物 肝胰腺 谷胱甘肽过氧化物酶 饲料转化率 超氧化物歧化酶 动物科学 亚硝酸盐 抗氧化剂 食品科学 体重增加 过氧化氢酶 丙二醛 生物化学 内分泌学 渔业 生态学 体重 硝酸盐
作者
Yun Wang,Zheng Li,Jian Li,Yafei Duan,Jin Niu,Jun Wang,Zhong Huang,Heizhao Lin
出处
期刊:Fish & Shellfish Immunology [Elsevier]
卷期号:43 (2): 337-345 被引量:78
标识
DOI:10.1016/j.fsi.2015.01.008
摘要

An eight-week feeding trial followed by an acute combined stress test of low-salinity and nitrite were performed to evaluate effects of chlorogenic acid (CGA) on growth performance and antioxidant capacity of white shrimp Litopenaeus vannamei. Shrimp were randomly allocated in 12 tanks (30 shrimp per tank) and triplicate tanks were fed with a control diet or diets containing different levels of CGA (100, 200 and 400 mg kg−1 feed) as treatment groups. Growth performance including weight gain (WG), biomass gain (BG), feed conversion ratio (FCR), and feed intake were determined after feeding for 56 days. Antioxidant capacity were evaluated by determining the activity of total antioxidant status (TAS), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT) as well as the gene expression of GSH-Px and CAT in the hepatopancreas of shrimp at the end of feeding trial and again at the end of the combined stress test. The results indicated that supplemention of CGA had no significant effects on the growth performance and the activities of TAS, SOD, GSH-Px and CAT in hepatopancreas of shrimp cultured under normal conditions for 56 days. However, compared with the control group, CGA (200, 400 mg kg−1 feed) significantly improved the resistance of L. vannamei against the combined stress of low-salinity and nitrite, as indicated by the significant (P < 0.05) higher survival, higher activities of TAS, GSH-Px and CAT, as well as higher transcript levels of GPx and CAT gene in shrimp treated with CGA in the combined tress test. Our findings suggested that CGA possessed dual-modulatory effects on antioxidant capacity of L. vannamei and could be a potential feed additive that can enhance shrimp resistance against environmental stresses. The recommended application dosage is 200 mg kg−1 and further studies are needed to clarify the action model of CGA efficiency.
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