Antimicrobial susceptibility, phylotypes, and virulence genes ofEscherichia colifrom clinical bovine mastitis in five provinces of China

文献类型： 外文期刊

第一作者： Lan, Tu

作者： Lan, Tu;Liu, Huimin;Meng, Lu;Xing, Mengru;Dong, Lei;Gu, Mei;Wang, Jiaqi;Zheng, Nan;Lan, Tu;Liu, Huimin;Meng, Lu;Xing, Mengru;Dong, Lei;Gu, Mei;Wang, Jiaqi;Zheng, Nan;Lan, Tu;Liu, Huimin;Meng, Lu;Xing, Mengru;Dong, Lei;Gu, Mei;Wang, Jiaqi;Zheng, Nan

作者机构：

关键词： Escherichia coli; bovine mastitis; antibiotic resistance; phylotype

期刊名称：FOOD AND AGRICULTURAL IMMUNOLOGY （ 影响因子：3.101； 五年影响因子：2.573 ）

ISSN： 0954-0105

年卷期： 2020 年 31 卷 1 期

页码：

收录情况： SCI

摘要： The objectives of this study were to determine the antimicrobial susceptibility, phylotype, and virulence genes ofEscherichia coli(E. coli) from cows with clinical mastitis. A total of 497 mastitis samples were collected and 92E. coliisolates were identified.E. coliisolates were highly resistance to ampicillin (41.3%), followed by piperacillin (36.9%) and tetracycline (34.7%). Five intimin types, namely mu R-iota 2, lambda, xi R/beta 2, nu R-epsilon 2, eta, were observed among 75 EPEC strains witheaegene, with all the intimins were first detected in bovine mastitis milk. And 65E. colistrains (70.7%) belonged to seven different O serotypes (O121, O91, O22, O26, O128, O111, and O113). For the phylogroup assignment, only 87E. coliisolates could be assigned into phylogroup B1, A, C, and E. This study suggested the prevailing among EPEC strains isolated from mastitis in five provinces was important to understand the etiology ofE. coli.

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