华北农学报 ›› 2022, Vol. 37 ›› Issue (3): 231-238. doi: 10.7668/hbnxb.20192837

• 畜牧·水产·兽医 • 上一篇    

纳米硒对热应激虹鳟血清抗氧化指标和免疫指标的影响

卢军浩, 李兰兰, 权金强, 赵桂研, 孙军, 林桥荣, 刘哲   

  1. 甘肃农业大学 动物科学技术学院,甘肃 兰州 730070
  • 收稿日期:2022-03-12 出版日期:2022-06-30
  • 通讯作者: 刘哲
  • 作者简介:

    卢军浩(1997-),男,河南上蔡人,在读硕士,主要从事动物遗传理论与应用研究。

  • 基金资助:
    国家自然科学基金(31960727); 甘肃省农业农村厅专项(GARS-TSYZ-1); 2021年现代丝路寒旱农业科技支撑计划(GSLK-2021-16)

Effects of Nano-selenium on Serum Antioxidant and Immune Indexes of Oncorhynchus mykiss under Heat Stress

LU Junhao, LI Lanlan, QUAN Jinqiang, ZHAO Guiyan, SUN Jun, LIN Qiaorong, LIU Zhe   

  1. College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China
  • Received:2022-03-12 Published:2022-06-30
  • Contact: LIU Zhe

摘要:

为研究纳米硒对热应激下虹鳟血清抗氧化指标和免疫指标的影响,选取平均体质量约80 g的8月龄虹鳟600尾,随机分为3组,其中,对照组饲喂基础日粮,处理组分别饲喂添加了5,10 mg/kg纳米硒的日粮,在虹鳟适宜生长水温(18 ℃)条件下饲喂9 d在24 ℃ (虹鳟产生热应激)下热应激48 h;分别在热应激前(18 ℃,0,3,6,9 d)和热应激(24 ℃,4,8,12,24,48 h)每组随机取10尾鱼,采集血清,测定抗氧化和免疫指标。结果发现,相比对照组添加纳米硒显著提高了血清总蛋白(TP)、白蛋白(ALB)和球蛋白(GLB)含量;热应激下谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶(SOD)的含量降低,过氧化氢酶(CAT)和丙二醛(MDA)的含量升高,纳米硒提高了GSH-Px、SOD和CAT含量,降低了MDA含量;热应激使对照组血清肿瘤坏死因子-α(TNF-α)和白介素-1β(IL-1β)的含量逐渐升高,5 mg/kg纳米硒组在热应激4 h相比对照组TNF-α和IL-1β的含量显著提高,热应激12 h相比对照组IL-1β的含量显著降低;免疫球蛋白M(IgM)在热应激4 h含量下降,热应激12 h含量上升,补体3(Complement 3,C3)的含量在热应激下逐渐下降,纳米硒则显著提高了IgM和C3的含量。综上,饲粮中添加纳米硒可提高热应激下虹鳟血清抗氧化和免疫指标,且相比10 mg/kg添加量,添加5 mg/kg纳米硒对机体的保护能力更强。

关键词: 虹鳟, 纳米硒, 热应激, 抗氧化指标, 免疫指标

Abstract:

In order to study the effects of nano-selenium on serum antioxidant and immune indexes of rainbow trout under heat stress,600 8-month-old rainbow trout with an average body weight of 80 g were selected and randomly divided into 3 groups:the control group was fed with the basal diet,and the experimental groups were fed with 5,10 mg/kg nano-selenium diets.The rainbow trout was fed at the suitable growth water temperature(18 ℃)for 9 days,At 24 ℃ (heat stress for rainbow trout)for 48 h.10 fish were randomly selected from each group before heat stress(18 ℃,0,3,6,9 d)and after heat stress(24 ℃,4,8,12,24,48 h)and serum was collected to determine antioxidant and immune indexes.The results showed that compared with the control group,the experimental group significantly increased the contents of TP,ALB and GLB in serum(P<0.05);the activity of GSH-Px and SOD were significantly decreased,as well as CAT and MDA were significantly increased in heat stress,but the addition of nano-selenium significantly increased the activity of GSH-Px,SOD,CAT and decreased MDA activity;the contents of tumor necrosis factor-α(TNF-α) and interleukin-1β(IL-1β) in serum of the control group were gradually increased by heat stress. The contents of TNF-α and IL-1β in serum of the 5 mg/kg nano-selenium group were significantly increased at 4 h, and the contents of IL-1β were significantly decreased at 12 h compared with the control group.The content of IgM decreased at 4 h and increased at 12 h after heat stress,and nano-selenium supplementation significantly increased the activity of IgM;after heat stress,the content of C3 decreased gradually,but the addition of nano-selenium significantly increased the activity of C3.In conclusion,dietary nano-selenium supplementation can improve the antioxidant capacity and immune capacity of rainbow trout under heat stress.Compared with 10 mg/kg nano-selenium,the antioxidant effect and immune effect of 5 mg/kg nano-selenium are more stable.

Key words: Rainbow trout, Nano-selenium, Heat stress, Antioxidant index, Immune index

引用本文

卢军浩, 李兰兰, 权金强, 赵桂研, 孙军, 林桥荣, 刘哲. 纳米硒对热应激虹鳟血清抗氧化指标和免疫指标的影响[J]. 华北农学报, 2022, 37(3): 231-238. doi: 10.7668/hbnxb.20192837.

LU Junhao, LI Lanlan, QUAN Jinqiang, ZHAO Guiyan, SUN Jun, LIN Qiaorong, LIU Zhe. Effects of Nano-selenium on Serum Antioxidant and Immune Indexes of Oncorhynchus mykiss under Heat Stress[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(3): 231-238. doi: 10.7668/hbnxb.20192837.

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