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草业学报 ›› 2024, Vol. 33 ›› Issue (9): 199-213.DOI: 10.11686/cyxb2023398

• 研究论文 • 上一篇    

纳米硒对滩羊生长性能、血液生化及代谢组的影响

郭荣1,2(), 景海飞1,2, 杨仪2,3, 辛国省2,3,4(), 杨婷5   

  1. 1.宁夏大学动物科技学院,宁夏 银川 750021
    2.宁夏大学饲料工程技术研究中心,宁夏 银川 750021
    3.宁夏大学生命科学学院,宁夏 银川 750021
    4.宁夏大学西部特色生物资源保护与利用教育部重点实验室,宁夏 银川 750021
    5.宁夏昊标检测服务研究院,宁夏 银川 750021
  • 收稿日期:2023-10-19 修回日期:2023-12-15 出版日期:2024-09-20 发布日期:2024-06-20
  • 通讯作者: 辛国省
  • 作者简介:E-mail: gsxin@nxu.edu.cn
    郭荣(1998-),女,宁夏银川人,在读硕士。E-mail: rg18295583632@163.com
  • 基金资助:
    优质富硒羊肉生产及高值转化关键技术研究与集成示范项目(2021BFH03006)

Effects of nano selenium on growth performance, blood biochemistry and metabolome of Tan sheep

Rong GUO1,2(), Hai-fei JING1,2, Yi YANG2,3, Guo-sheng XIN2,3,4(), Ting YANG5   

  1. 1.College of Animal Science and Technology,Ningxia University,Yinchuan 750021,China
    2.Feed Engineering Technology Research Center of Ningxia University,Yinchuan 750021,China
    3.Life and Sciences College,Ningxia University,Yinchuan 750021,China
    4.Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China,Yinchuan 750021,China
    5.Ningxia Haobiao Analysis&Test Institute,Yinchuan 750021,China
  • Received:2023-10-19 Revised:2023-12-15 Online:2024-09-20 Published:2024-06-20
  • Contact: Guo-sheng XIN

摘要:

本试验旨在探究不同添加水平的纳米硒对滩羊生长性能、血液生化、抗氧化及代谢组的影响。选取3月龄健康育肥公滩羊60只,按体重相近原则随机分为4组,每组15只,每组3个重复,每个重复5只羊:CON组(含硒0.02 mg·kg-1 DM,对照组)饲喂基础日粮,Ⅰ、Ⅱ和Ⅲ组(试验组)滩羊在饲喂基础日粮基础上分别添加0.1、0.3和0.5 mg·kg-1纳米硒。预试期10 d,正试期90 d。结果表明:1)滩羊生长性能组间无显著差异(P>0.05)。2)Ⅰ组滩羊的经济效益(190.52元)高于其他组(187.85、174.92、131.01元)。3)试验组滩羊的血清丙氨酸氨基转移酶活性和尿素含量分别为13.75、13.25 U·L-1;8.26、8.11、7.52 mmol·L-1;显著低于CON组(23.00 U·L-1、10.19 mmol·L-1P<0.05)。4)Ⅲ组滩羊的血清碱性磷酸酶活性(494.75 U·L-1)显著高于其他组(262.75、228.00、250.50 U·L-1P<0.05)。5)Ⅱ组血清球蛋白含量、总抗氧化能力和谷胱甘肽过氧化物酶活性(42.48 g·L-1、9.91 U·mL-1、183.93 U·mL-1)显著高于对照组(34.13 g·L-1、4.93 U·mL-1、89.53 U·mL-1P<0.05)。6)通过血液代谢组学分析共筛选出21种差异显著代谢产物,主要富集的代谢通路有泛酸和辅酶A生物合成、碳水化合物消化和吸收、维生素消化和吸收等。综上所述,饲粮中添加纳米硒可改善滩羊的机体健康状况,提高抗氧化能力,这可能与代谢通路调控有关;本试验中,滩羊饲料纳米硒最适添加量为0.3 mg·kg-1

关键词: 硒, 宁夏滩羊, 血清, 抗氧化, 代谢组

Abstract:

This experiment was conducted to study the effects of different nano-selenium levels on growth rate, blood biochemistry and antioxidant function and metabolome of Tan sheep. Sixty 3-month-old healthy fattening Tan sheep with the similar body weight were randomly assigned to four groups with 15 sheep in each, and three replicates of five sheep per group. As a control (CON) sheep in one group were fed a basal diet (selenium content 0.02 mg·kg-1 DM, control group) while sheep in the other three ‘test’ groups (designated Ⅰ, Ⅱ and Ⅲ) were fed the basal diet with an additional 0.1, 0.3 and 0.5 mg·kg-1 of nano-selenium, respectively. A pre-trial adjustment period lasted for 10 days and the experimental period lasted for 90 days. It was found that: 1) There were no significant group differences in growth rates of the Tan sheep (P > 0.05). 2) The economic return from group Ⅰ (190.52 CNY) was higher than that in other groups (187.85, 174.92 and 131.01 CNY for Con, group Ⅱ and group Ⅲ, respectively). 3) The contents of serum alanine aminotransferase (ALT) in test groups Ⅱ and Ⅲ were 13.75 and 13.25 U·L-1 compared with 23.00 U·L-1 in Con (P<0.05), and an intermediate value of 18.50 U·L-1 in Group Ⅲ; contents of urea were 8.26, 8.11, 7.52 mmol·L-1, in groups Ⅰ, Ⅱ and Ⅲ, respectively; significantly lower than the CON group (10.19 mmol·L-1) (P<0.05). 4) The serum alkaline phosphatase (ALP) activity of Tan sheep in group Ⅲ (494.75 U·L-1) was significantly higher than that in other groups (262.75, 228.00, 250.50 U·L-1 for groups CON, Ⅰ and Ⅱ, respectively) (P<0.05). 5) Group Ⅱ serum globulin (GLOB), total antioxidant capacity (T-AOC) and glutathione peroxidase (GSH-Px) activity (42.48 g·L-1, 9.91 U·mL-1 and 183.93 U·mL-1, respectively) were significantly higher than those of the CON group where corresponding values were 34.13 g·L-1, 4.93 U·mL-1 and 89.53 U·mL-1P<0.05). 6) A total of 21 metabolites with significant differences were screened through blood metabolomics analysis, with enrichment detected mainly in the metabolic pathways of pantothenate and CoA biosynthesis, carbohydrate digestion and absorption and vitamin digestion and absorption, among others. In summary, dietary supplementation with nano-selenium improved the body health and antioxidant capacity, which was shown to be related to the regulation of metabolic pathways in Tan sheep. In this experiment, the optimal amount of added dietary nano-selenium for Tan sheep was 0.3 mg·kg-1.

Key words: selenium, Ningxia Tan sheep, blood serum, antioxidant, metabolome