您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Risk factors of bovine clinical mastitis and antimicrobial resistance of mastitis-causing Escherichia coli in Shandong, China

文献类型： 外文期刊

作者： Liu, Peng 1 ; Hu, Dongfang 2 ; Zuo, Jinjiao 3 ; Wu, Caihong 1 ; Lu, Hui 1 ; Cheng, Zilong 4 ; Liu, Mengda 5 ;

作者机构： 1.Jiangsu Agri Anim Husb Vocat Coll, Coll Vet Med, Taizhou 225300, Jiangsu, Peoples R China

2.Henan Inst Sci & Technol, Coll Anim Sci & Technol, Xinxiang 453003, Henan, Peoples R China

3.Jiangsu Agri Anim Husb Vocat Coll, Pet Vet Med, Taizhou 225300, Jiangsu, Peoples R China

4.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

5.China Anim Hlth & Epidemiol Ctr, Lab Zoonoses, Qingdao 266032, Peoples R China

关键词： antimicrobial resistance; bovine mastitis; China; cow culling; risk factors

期刊名称：THAI JOURNAL OF VETERINARY MEDICINE （ 影响因子：0.3； 五年影响因子：0.4 ）

ISSN： 0125-6491

年卷期： 2024 年 54 卷 2 期

页码：

收录情况： SCI

摘要： The culling of dairy cattle is closely related to the economic benefits of the farm. Many reasons can lead to the culling of cows. Among these, mastitis is the main reason for the serious economic loss of the dairy industry, and also the harm to global public health. However, little is known about cow culling situations, antimicrobial resistance, and virulence factors of mastitis-causing Escherichia coli in Shandong, China. A cross-sectional study was conducted in 16 randomly selected dairy herds to identify the reasons for cow culling, to assess the risk factors, and to isolate the major etiological agent of clinical mastitis (CM). The overall culling rate of dairy cows was 25.24%. And 81.66% of the culled cows occurred before their fourth parity. The most common reasons for culling were mastitis (32.91%) and reproductive failure (28.38%). The investigated herds had CM rates ranging from 4.17 to 10.64%. The filler material in cow beds, management of milking parlors, cleaning of quarters before milking, disinfection of teat cups every time, hygiene of breast and leg, and the nipple score were identified as risk factors associated with CM. From the 101 milk samples analyzed by cultured, 92 bacteria were yielded. The predominant bacteria were Escherichia coli (31.52%), Streptococcus species (27.17%), and Staphylococcus aureus (15.22%). The majority of the E.coli isolates, which belonged to phylogeny group A, were defined as commensal strains. Virulence genes iucD was detected in 91.67% of the E.coli isolated, followed by iss (83.33%). All of the 29 E.coli isolates were resistant to at least one antimicrobial tested. Resistance to ciprofloxacin or levofloxacin was most common (100%), which might be due to mutations (Ser83Leu/Asp87Asn) in the gyrA gene. Prevalence of multi-drug resistance (resistance to >3 antimicrobials) was 62.07% (18/29). This study emphasizes the need for prevention and control of mastitis to lower the culling hazard in Shandong. Moreover, it is necessary to strengthen the rational use of antimicrobials and infection control measures in dairy farms in order to reduce the emergence of drug-resistant bacteria.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台