畜牧兽医学报 ›› 2024, Vol. 55 ›› Issue (2): 649-659.doi: 10.11843/j.issn.0366-6964.2024.02.022

• 预防兽医 • 上一篇    下一篇

河北省廊坊市牛主要病毒性腹泻病原感染状况检测及牛冠状病毒演化分析

李思远1,2, 付新成5, 袁雪松2,3, 毛立2,3, 蔡旭航1,2, 孙心如2, 黄金2,3, 谢玲玲6, 王府6, 周华7, 张琪1*, 李基棕2,3,4*, 李彬2,3,4*   

  1. 1. 西北农林科技大学动物医学院, 杨凌 712100;
    2. 江苏省农业科学院兽医研究所, 农业农村部兽用生物制品工程技术重点实验室, 南京 210014;
    3. 南京农业大学动物医学院, 南京 210095;
    4. 江苏大学生命科学学院 食品与生物工程学院, 镇江 212013;
    5. 河北省廊坊市农业农村局, 廊坊 065000;
    6. 贵州省种畜禽种质测定中心, 贵阳 550018;
    7. 黔西市动物疫病预防控制中心, 黔西 551500
  • 收稿日期:2023-04-18 出版日期:2024-02-23 发布日期:2024-02-27
  • 通讯作者: 张琪,主要从事牛病学研究,E-mail:273010466@qq.com,李基棕,主要从事动物传染病防治和诊断技术研究,E-mail:lijizong22@sina.com;李彬,主要从事动物病毒学研究,E-mail:libinana@126.com
  • 作者简介:李思远(1999-)男,福建福州人,硕士生,主要从事牛腹泻病原研究,E-mail:lisy990102@163.com;付新成(1978-),男,河北唐山人,本科,高级兽医师,主要从事动物疫病防控研究,E-mail:670322997@qq.com
  • 基金资助:
    十四五国家重点研发计划(2021YFD1801101);陕西省重点研发计划一般项目(2022NY-098);贵州省种业发展项目(肉牛遗传改良与高效养殖技术研究);江苏省农业科技自主创新资金项目(CX(21)3137)

Detection of Bovine Viral Diarrhea Pathogens and Evolution Analysis of Bovine Coronavirus in Langfang, Hebei

LI Siyuan1,2, FU Xincheng5, YUAN Xuesong2,3, MAO Li2,3, CAI Xuhang1,2, SUN Xinru2, HUANG Jin2,3, XIE Lingling6, WANG Fu6, ZHOU Hua7, ZHANG Qi1*, LI Jizong2,3,4*, LI Bin2,3,4*   

  1. 1. College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China;
    2. Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China;
    3. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China;
    4. School of Food and Biological Engineering, School of Life Sciences, Jiangsu University, Zhenjiang 212013, China;
    5. Langfang Municipal Bureau of Agriculture and Rural Affairs, Langfang 065000, China;
    6. Guizhou Testing Center for Livestock and Poultry Germplasm, Guiyang 550018, China;
    7. Qianxi Animal Disease Control Center, Qianxi 551500, China
  • Received:2023-04-18 Online:2024-02-23 Published:2024-02-27

摘要: 牛病毒性腹泻病原严重危害畜牧业生产,BVDV、BoAstV、BCoV、MRV、BKoV、BoNeV、BNoV、BRV、BToV被认为是引起牛群腹泻的病原,不仅如此,BVDV、BCoV和BToV除了能引起消化道症状外还能引起呼吸道症状,BVDV不仅能引起消化道和呼吸道症状,还会导致母牛生殖功能异常,这些疾病对畜牧业造成巨大的经济损失。为了解牛主要病毒性腹泻病原流行情况,本次试验通过PCR检测方法对我国河北地区323份腹泻牛粪样品进行常见9种病毒性牛腹泻病原进行检测。结果显示,BVDV阳性检出率1.85% (6/323)、 BCoV阳性检出率14.24% (46/323)、BRV阳性检出率57.89% (187/323)、BoAstV阳性检出率0.31% (1/323)、BoNeV阳性检出率10.84% (35/323)、BNoV阳性检出率4.33%(14/323)、MRV阳性检出率2.48% (8/323)、BToV阳性检出率4.64% (15/323)、BKoV阳性检出率11.76% (38/323)。混合感染共有76份,占比23.53%(76/323)。HBLF2302株的全基因序列、S、HE、N、ME基因进行同源性和遗传进化分析发现,HBLF2302与BCoV/NMG1/2022基因同源性最高,为GIIb亚型。基于氨基酸序列比对和HBLF2302的S蛋白三级结构预测发现,在S蛋白中157号位突变为157T,854号位点突变为854I。318V为独特突变,改变了与侧链残基的作用力,与631C形成氢键连接。并发现中国株区别于其它地区的GⅡb亚型,位于ORF1a区域有三个独特位点。本研究丰富了牛腹泻病原的流行病学数据,为牛腹泻病的防控奠定基础。

关键词: 病毒性腹泻, 牛冠状病毒, 流行病学调查, 腹泻病原

Abstract: Cattle viral diarrhea pathogens have adverse effects on animal husbandry. BVDV, BoAstV, BCoV, MRV, BKoV, BoNeV, BNoV, BRV, BToV were well known as the cause of diarrhea. On the other hand, BVDV, BCoV and BToV also caused respiratory system symptoms. Among them, BVDV not only causes alimentary tract symptoms and respiratory symptoms, but also leads to abnormal reproductive function of cows causing great economic losses. In order to understand the prevalence of the main viral diarrhea pathogens in cattle, 323 fecal samples from diarrheal cow in Hebei province of China were detected by PCR to detect nine common viral diarrhea pathogens. Prevalence of 1.85% (6/323), 14.24% (46/323), 57.89% (187/323), 0.31 (1/323), 10.84% (35/323), 4.33% (14/323), 2.48% (8/323), 4.64% (15/323), 11.76% (38/323), was determined for BVDV, BCoV, BRV, BoAstV, BoNeV, BNoV, MRV, BToV, BKoV, respectively. There were 76 co-infection samples accounting for 23.53% (76/323). Homology and genetic evolution analysis of the complete genomic sequence, S, HE, N, M and E genes of HBLF2302 strain showed that HBLF2302 gene had high homology with BCoV/NMG1/2022 and was GIIb subtype. Based on the amino acid sequence alignment and the tertiary structure prediction of HBLF2302 S protein, it was found that the 157 site was mutated to 157T and the 854 site was mutated to 854I in the S protein. 318V is a unique mutation, which changes the force with the side chain residue and forms a hydrogen bond connection with 631C. It was found that the Chinese strain was different from the GⅡb subtype in other regions, and there were three unique sites in the ORF1a region. This study enriched the epidemiological data about bovine diarrhea pathogens for laying the foundation of bovine pathogens prevention and control.

Key words: viral diarrhea, bovine coronavirus, epidemiology investigation, diarrhea pathogens

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