Emissions of Escherichia coli Carrying Extended-Spectrum ?-Lactamase Resistance from Pig Farms to the Surrounding Environment

Lili Gao, Yeke Tan, Xiaodan Zhang, Jiaqing Hu, Zengmin Miao, Liangmeng Wei and Tongjie Chai
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Lili Gao: College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271000, Shandong, China
Yeke Tan: Tai'an City Central Hospital, Tai'an 271000, Shandong, China
Jiaqing Hu: College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271000, Shandong, China
Zengmin Miao: College of Life Sciences, Taishan Medical University, Tai'an 271000, China
Liangmeng Wei: College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271000, Shandong, China
Tongjie Chai: College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271000, Shandong, China

IJERPH, 2015, vol. 12, issue 4, 1-11

Abstract: The dissemination of extended-spectrum ?-lactamase (ESBL)-producing Escherichia coli ( E. coli ) from food-producing animals to the surrounding environment has attracted much attention. To determine the emissions of ESBL-producing E. coli from pig farms to the surrounding environment, fecal and environmental samples from six pig farms were collected. In total, 119 ESBL-producing E. coli were isolated from feces, air samples, water, sludge and soil samples. Antibiotic susceptibility testing showed that the ESBL-producing isolates were resistant to multiple antibiotics and isolates of different origin within the same farm showed similar resistance phenotypes. Both CTX-M and TEM ESBL-encoding genes were detected in these isolates. CTX-M-14 and CTX-M-15 were the predominant ESBL genes identified. ESBL producers from feces and environmental samples within the same farm carried similar CTX-M types. The results indicated that the ESBL-producing E. coli carrying multidrug resistance could readily disseminate to the surrounding environment.

Keywords: ESBL-producing E. coli; environment; emission; CTX-M (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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