您好，欢迎访问新疆农业科学院 机构知识库！
新疆农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Molecular characterisation and antimicrobial resistance of Streptococcus agalactiae isolates from dairy farms in China

文献类型： 外文期刊

作者： Ma, Xiaojiao 1 ; Chen, He 2 ; Wang, Fulan 2 ; Wang, Shuai 2 ; Wu, Yating 2 ; Ma, Xianlan 2 ; Wei, Yong 5 ; Shao, Wei 1 ; Zhao, Yankun 2 ;

作者机构： 1.Xinjiang Agr Univ, Coll Anim Sci, Urumqi 830052, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Urumqi 830091, Peoples R China

3.Minist Agr & Rural Affairs, Lab Qual & Safety Risk Assessment Agroprod, Urumqi 830091, Peoples R China

4.Key Lab Agroprod Qual & Safety Xinjiang, Urumqi 830091, Peoples R China

5.Xinjiang Tianao Anim Husb Co Ltd, Ili 835000, Peoples R China

关键词： Streptococcus agalactiae; serotype; molecular characterisation; antimicrobial resistance; drug resistance gene

期刊名称：JOURNAL OF VETERINARY RESEARCH （ 影响因子：1.8； 五年影响因子：2.2 ）

ISSN： 2450-7393

年卷期： 2023 年 67 卷 2 期

页码：

收录情况： SCI

摘要： Introduction: Streptococcus agalactiae (S. agalactiae) is a pathogen causing bovine mastitis that results in considerable economic losses in the livestock sector. To understand the distribution and drug resistance characteristics of S. agalactiae from dairy cow mastitis cases in China, multilocus sequence typing (MLST) was carried out and the serotypes and drug resistance characteristics of the bacteria in the region were analysed. Material and Methods: A total of 21 strains of bovine S. agalactiae were characterised based on MLST, molecular serotyping, antimicrobial susceptibility testing, and the presence of drug resistance genes. Results: The serotypes were mainly Ia and II, accounting for 47.6% and 42.9% of all serotypes, respectively. Five sequence types (STs) were identified through MLST. The ST103 and ST1878 strains were predominant, with rates of 52.4% and 28.6%, respectively. The latter is a novel, previously uncharacterised sequence type. More than 90% of S. agalactiae strains were susceptible to penicillin, oxacillin, cephalothin, ceftiofur, gentamicin, florfenicol and sulfamethoxazole. The bacteria showed high resistance to tetracycline (85.7%), clindamycin (52.1%) and erythromycin (47.6%). Resistant genes were detected by PCR, the result of which showed that 47.6%, 33.3% and 38.1% of isolates carried the tet(M), tet(O) and erm(B) genes, respectively. Conclusion: The results of this study indicate that S. agalactiae show a high level of antimicrobial resistance. It is necessary to monitor the pathogens of mastitis to prevent the transmission of these 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：新疆农业科学院

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