欢迎访问《草业学报》官方网站,今天是 分享到:

草业学报 ›› 2025, Vol. 34 ›› Issue (5): 202-211.DOI: 10.11686/cyxb2024266

• 研究论文 • 上一篇    

羔羊断奶前后血清生化指标、抗氧化和免疫性能的变化

占今舜1(), 江浩筠1, 王海波1,2, 贾浩滨1, 潘月1,3, 钟小军1, 霍俊宏1()   

  1. 1.江西省农业科学院畜牧兽医研究所,畜禽绿色健康养殖江西省重点实验室,江西 南昌 330200
    2.甘肃农业大学动物科学技术学院,甘肃 兰州 730070
    3.天津农学院动物科学与动物医学学院,天津 300384
  • 收稿日期:2024-07-09 修回日期:2024-09-12 出版日期:2025-05-20 发布日期:2025-03-20
  • 通讯作者: 霍俊宏
  • 作者简介:E-mail: hjh_0222@126.com
    占今舜(1985-),男,江西玉山人,博士。E-mail: zhanjinshun1985@163.com
  • 基金资助:
    国家自然科学基金项目(32360857);江西现代农业科研协同创新专项(JXXTCXQN202203);江西省农业科学院基础研究与人才培养专项(JXSNKYJCRC202407);江西省现代农业产业技术体系建设专项(JXARS-13-肉羊岗位)资助

The changes of serum biochemical indexes, oxidation resistance and immune property in pre- and post-weaning lambs

Jin-shun ZHAN1(), Hao-yun JIANG1, Hai-bo WANG1,2, Hao-bin JIA1, Yue PAN1,3, Xiao-jun ZHONG1, Jun-hong HUO1()   

  1. 1.Jiangxi Province Key Laboratory of Animal Green and Healthy Breeding,Institute of Animal Science and Veterinary Medicine,Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China
    2.College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China
    3.College of Animal Science and Animal Medicine,Tianjin Agricultural University,Tianjin 300384,China
  • Received:2024-07-09 Revised:2024-09-12 Online:2025-05-20 Published:2025-03-20
  • Contact: Jun-hong HUO

摘要:

本研究旨在探究断奶前后血清生化指标、抗氧化和免疫性能的变化,分析羔羊早期断奶应激发生规律,为营养调控羔羊断奶应激提供理论依据。选取12只出生时间相同,体重相近的健康湖羊羔羊于30日龄进行断奶,羔羊断奶前(断奶0 d)和断奶后3、6和15 d采集血清用于生化指标以及激素浓度、抗氧化和免疫性能等指标的测定。结果表明:1)与断奶0 d相比,断奶15 d羔羊血清谷丙转氨酶(ALT)活性显著降低(P<0.05),断奶6 d羔羊血清碱性磷酸酶(ALP)活性和总蛋白(TP)含量显著降低(P<0.05)。断奶6 d羔羊血清总胆固醇(TC)含量显著高于其他各组(P<0.05),血清尿素氮(BUN)含量随着断奶时间的延长而逐渐升高,而各组间葡萄糖(GLU)含量无显著差异(P>0.05)。2)与断奶3 d相比,断奶15 d羔羊血清三碘甲状腺原氨酸(T3)浓度和断奶6 d羔羊血清四碘甲状腺原氨酸(T4)浓度均显著升高(P<0.05)。 断奶6 d羔羊血清胰岛素样生长因子1(IGF-1)浓度显著低于断奶0和3 d (P<0.05),而各组间肾上腺素(EPI)浓度无显著差异(P>0.05)。3)与断奶0 d相比,断奶3 d羔羊血清总抗氧化能力(T-AOC)、谷胱甘肽过氧化物酶(GSH-Px)和过氧化氢酶(CAT)活性显著降低(P<0.05),而断奶15 d羔羊超氧化物歧化酶(SOD)和CAT活性则显著升高(P<0.05)。与断奶0 d相比,断奶3 d羔羊血清丙二醛(MDA)浓度显著升高(P<0.05),而断奶6和15 d核因子E2相关因子2(Nrf2)浓度则显著降低(P<0.05)。断奶0 d羔羊血清血红素加氧酶-1(HO-1)浓度显著低于其他各组(P<0.05)。4)与断奶3 d相比,断奶15 d羔羊免疫球蛋白A(IgA)浓度显著升高(P<0.05),断奶6和15 d羔羊血清免疫球蛋白G(IgG)浓度显著升高(P<0.05),而各组间免疫球蛋白M(IgM)浓度则无显著差异(P>0.05)。 断奶0 d血清CD 4+ T淋巴细胞(CD 4)浓度和CD 8+ T淋巴细胞(CD 8)浓度的比值显著低于其他各组(P<0.05),其中二者均在断奶6 d最高,而各组间CD 8浓度则无显著差异(P>0.05)。5)断奶3 d羔羊血清白细胞介素-1β(IL-1β)浓度显著高于其他各组(P<0.05),而干扰素-γ(IFN-γ)浓度则相反。与断奶3 d相比,断奶6和15 d羔羊血清白细胞介素-2(IL-2)、白细胞介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)浓度显著下降(P<0.05)。与断奶0 d相比,断奶3、6和15 d羔羊血清白细胞介素-8(IL-8)和白细胞介素-22(IL-22)浓度均显著升高(P<0.05),而血清核因子κB(NF-κB)浓度则相反。与断奶0 d相比,断奶6和15 d羔羊血清半胱氨酸蛋白酶3(Caspase3)浓度显著下降(P<0.05)。综上所述,羔羊早期断奶后会造成机体抗氧化能力和免疫力下降,增强炎症反应。随着断奶后时间的延长,羔羊抗氧化、抗炎能力和免疫力有所增强。

关键词: 羔羊, 早期断奶, 抗氧化, 血液生化指标, 免疫性能

Abstract:

This study investigated the changes in serum biochemical indexes, and antioxidant and immune properties in pre- and post-weaning lambs, analyzed the incidence of early weaning stress in lambs, with the aim providing a theoretical basis for nutritional regulation of weaning stress in lambs. Twelve healthy Hu lambs with the same birth date and similar body weight were chosen and weaned at 30 days of age. The serum of lambs was collected prior to weaning (Day 0) and at 3, 6 and 15 days post-weaning for measurement of biochemical parameters, hormone concentrations, and antioxidant and immune properties. The following results were obtained: 1) Compared with Day 0, serum alanine aminotransferase activity of lambs at Day 15 after weaning was significantly decreased (P<0.05) and serum alkaline phosphatase (ALP) activity and total protein content of lambs at Day 6 were significantly decreased (P<0.05). Serum total cholesterol content of lambs at Day 6 was significantly higher than that of other groups (P<0.05). Serum urea nitrogen content increased gradually with post-weaning time, but blood glucose did not differ among groups (P>0.05). 2) Compared with Day 3 post-weaning, serum triiodothyronine of lambs at Day 15 was significantly increased (P<0.05). Similarly, Day 15 tetraiodothyronine concentration of lambs was increased relative to Day 6. Serum insulin-like growth factor-1 was significantly lower at Day 6 than at Days 0 or 3 (P<0.05), but epinephrine concentration did not differ among groups (P>0.05). 3) Compared with Day 0, serum total antioxidant capacity, glutathione peroxidase and catalase (CAT) activities of lambs at Day 3 was significantly decreased (P<0.05), but superoxide dismutase and CAT activities of lambs at Day 15 was significantly increased (P<0.05). Compared with Day 0, serum malondialdehyde concentration of lambs at Day 3 was significantly increased (P<0.05), but nuclear factor-erythroid 2-related factor-2 concentration at Days 6 and 15 was significantly decreased (P<0.05). Serum heme oxygenase-1 concentration of lambs at Day 0 was significantly lower than that of other groups (P<0.05). 4) Compared with Day 3, serum immunoglobulin A concentration of lambs at Day 15 was significantly increased (P<0.05), and immunoglobulin G concentrations of lambs at Days 6 and 15 were also significantly increased (P<0.05), while immunoglobulin M did not differ between groups (P>0.05). The immune cell CD 4+ T-lymphocyte concentration and CD 4+ T-lymphocyte∶CD 8+ at Day 0 were significantly lower (P<0.05) than those at other times, with the highest values observed at Day 6. The CD 8+ T-lymphocyte concentration did not differ among groups (P>0.05). 5) Serum interleukin-1β concentration of lambs at Day 3 was significantly higher than at other times, but interferon gamma concentration was lowest at Day 3. Compared with Day 3, the concentrations of interleukin-2, interleukin-6 and tumor necrosis factor-α at Days 6 and 15 were significantly decreased (P<0.05). Compared with Day 0, the concentrations of interleukin-8 and interleukin-22 at Days 3, 6 and 15 were significantly increased (P<0.05), but the serum nuclear factor kappa-B concentrations were decreased. Compared with Day 0, the concentration of cysteinyl aspartate specific proteinase 3 at Days 6 and 15 was significantly decreased (P<0.05). In summary, early weaning decreased the body antioxidant and immune capacities and enhanced the inflammatory responses of lambs. The antioxidant, anti-inflammatory and immune capacities of the lambs were recovered with the passage of time after weaning.

Key words: lambs, early weaning, oxidation resistance, blood biochemical indexes, immune property