Antimicrobial resistance and virulence traits of Enterococcus faecium isolated from clinical bovine mastitis in Ningxia, China

被引：0
作者：
Li, Yuqiong [1 ]
Gao, Haihui [1 ]
Yu, Yang [1 ]
Zhao, Zhengwei [1 ]
Guo, Yanan [1 ]
机构：
[1] Ningxia Acad Agr & Forestry Sci, Inst Anim Sci, Yinchuan 750002, Ningxia, Peoples R China
来源：
VETERINARSKI ARHIV | 2022年 / 92卷 / 02期
关键词：
bovine mastitis; Enterococcus faecium; antimicrobial resistance; virulence genes; ANTIBIOTIC-RESISTANCE; FAECIUM STRAINS; GENES; FAECALIS; SPP; DAIRY; SUSCEPTIBILITY; STREPTOCOCCI; POULTRY; PIGS;
D O I：
10.24099/vet.arhiv.1439
中图分类号：
S85 [动物医学（兽医学）];
学科分类号：
0906 ;
摘要：
This study was conducted to determine the antimicrobial resistance and virulence traits of 32 Enterococcus faecium isolates from clinical bovine mastitis cases in Ningxia Province, China. In total, 32 E. faecium isolates were taken from subclinical bovine mastitis on the basis of morphological characterization and biochemical testing, and screened for antimicrobial susceptibility. The virulence genes of the isolates were studied using polymerase chain reaction (PCR). The disc diffusion assay revealed a high occurrence of resistance against tetracycline (78.1%) and erythromycin (68.8%) in the E. faecium isolates. However, all tested E. faecium were susceptible to linezolid and vancomycin. Moreover, all E. faecium isolates harbored the erythromycin-resistant genes ermA, ermB and ermC, as well as the tetracycline-resistant genes tetK, tetL and tetM. Furthermore, all E. faecium isolates carried more than 3 of the tested virulence genes. The presence of agg (100%), cpd (100%), efaA (100%), gelE (93.4%), and esp (75.0%) was found most frequently in all the tested isolates. These findings are useful for making appropriate antimicrobial choices and developing antivirulence therapies for subclinical bovine mastitis caused by E. faecium in Ningxia Province, China.
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页码：137 / 143
页数：7
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