湖北农业科学 ›› 2026, Vol. 65 ›› Issue (1): 131-136.doi: 10.14088/j.cnki.issn0439-8114.2026.01.022

• 动物科学 • 上一篇    下一篇

连翘水提物对副鸡禽杆菌抑菌机制研究

康鸿凯1,2, 郭云清2, 张腾飞2, 张文婷2, 胡巧2, 卢琴2, 张蓉蓉2, 翟新国1, 罗青平2,3   

  1. 1. 河北工程大学生命科学与食品工程学院,河北 邯郸 056038;
    2. 农业农村部畜禽细菌病防治制剂创制重点实验室/畜禽病原微生物学湖北省重点实验室/湖北省农业科学院畜牧兽医研究所,武汉 430064;
    3 湖北洪山实验室,武汉 430064
  • 收稿日期:2025-10-28 出版日期:2026-01-25 发布日期:2026-02-10
  • 通讯作者: 翟新国(1966-),男,副教授,硕士,主要从事重要动物传染病防控研究,(电子信箱)zhaixg1966@163.com。
  • 作者简介:康鸿凯(2000-),男,河北三河人,在读硕士研究生,研究方向为绿色抗生素替代品的研究,(电话)15532661741(电子信箱)3163207008@qq.com。罗青平(1971-),女,研究员,主要从事禽病防控研究,(电子信箱)qingping0523@163.com。
  • 基金资助:
    湖北省农业微生物产业发展重大专项(NYWSWZX2025-2027-0); 国家肉鸡产业技术体系项目(CARS-41); 湖北省禽蛋产业技术体系项目(2023HBSTX4-04)

Antibacterial mechanism of Forsythia suspensa aqueous extract against Avibacterium paragallinarum

KANG Hong-kai1,2, GUO Yun-qing2, ZHANG Teng-fei2, ZHANG Wen-ting2, HU Qiao2, LU Qin2, ZHANG Rong-rong2, ZHAI Xin-guo1, LUO Qing-ping2,3   

  1. 1. School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056038, Hebei, China;
    2. Key Laboratory of Livestock and Poultry Bacterial Disease Prevention Preparation, Ministry of Agriculture and Rural Affairs/Hubei Provincial Key Laboratory of Pathogenic Microbiology of Livestock and Poultry/Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Sciences, Wuhan 430064, China;
    3. Hubei Hongshan Laboratory, Wuhan 430064, China
  • Received:2025-10-28 Published:2026-01-25 Online:2026-02-10

摘要: 副鸡禽杆菌(Avibacterium paragallinarum)引起鸡的传染性鼻炎,导致蛋鸡产蛋量下降,肉鸡生长发育受阻,给养禽业带来巨大的经济损失。通过高效液相色谱法(High-performance liquid chromatography,HPLC)测定了连翘[Forsythia suspensa (Thunb.) Vahl]水提物内连翘苷(Phillyrin)的含量,并分析了连翘水提物对副鸡禽杆菌体外抑菌效果、生长特性、生物被膜形成能力、黏附与侵袭能力等生物学特性的影响,初步揭示了连翘水提物对副鸡禽杆菌的抑菌机制。结果表明,连翘水提物内连翘苷的含量为(1.67±0.03)%,对副鸡禽杆菌的最小抑菌浓度(The minimum inhibitory concentration,MIC)和最小杀菌浓度(Minimum bactericidal concentration,MBC)均为7.81 mg/mL,并可显著抑制副鸡禽杆菌的生长、生物被膜形成能力和黏附侵袭能力,且呈剂量依赖型。表明连翘水提物在体外对副鸡禽杆菌具有良好的抑制效应,可为副鸡禽杆菌的绿色防控制剂的开发提供思路。

关键词: 连翘[Forsythia suspensa (Thunb.) Vahl]水提物, 副鸡禽杆菌(Avibacterium paragallinarum), 连翘苷, 高效液相色谱法, 抑菌机制

Abstract: Avibacterium paragallinarum causes infectious coryza, which leads to decreased egg production in layers and growth retardation in broilers, resulting in significant economic losses to the poultry industry. With the emergence of multidrug resistance and the implementation of antibiotic-restriction policies, there is an urgent need to develop green and effective antibiotic alternatives. Forsythia suspensaF. suspensa)possesses anti-inflammatory and anti-infective properties. The content of forsythin in the aqueous extract of F. suspensa was determined using High-performance liquid chromatography (HPLC). The antibacterial effects of the extract against Apg were evaluated, including its impact on bacterial growth, biofilm formation, adhesion and invasion capabilities, thereby preliminarily elucidating its antibacterial mechanism. The results showed that the forsythin content in the aqueous extract was (1.67±0.03)%. The minimum inhibitory concentration (MIC) and Minimum bactericidal concentration (MBC) of the extract against Apg were both 7.81 mg/mL. The extract significantly inhibited bacterial growth, biofilm formation, and adhesion-invasion capabilities in a dose-dependent manner. These findings demonstrated that the aqueous extract of F. suspensa exhibited potent inhibitory effects against Apg in vitro, providing a potential strategy for developing eco-friendly agents to control Apg infections.

Key words: Forsythia suspensa aqueous extract, Avibacterium paragallinarum, forsythin, High-performance liquid chromatography, antibacterial mechanism

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