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젖소 유방염에서 분리한 Pseudomonas spp.의 분포 및 항생제 내성 비교

Comparison on prevalence and antimicrobial resistance of Pseudomonas spp. isolated from bovine mastitis milk in South Korea

  • 강혜정 (농림축산검역본부 세균질병과) ;
  • 김하영 (농림축산검역본부 세균질병과) ;
  • 홍세림 (농림축산검역본부 세균질병과) ;
  • 박다솜 (농림축산검역본부 세균질병과) ;
  • 윤순식 (농림축산검역본부 세균질병과) ;
  • 문진산 (농림축산검역본부 세균질병과)
  • Kang, Hye Jeong (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Kim, Ha-Young (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Hong, Serim (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Park, Dasom (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Yoon, Soon-Seek (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Moon, Jin-San (Bacterial Disease Division, Animal and Plant Quarantine Agency)
  • 투고 : 2021.08.24
  • 심사 : 2021.09.10
  • 발행 : 2021.09.30

초록

This study was aimed to investigate the prevalence and antimicrobial resistance of Pseudomonas spp. isolated from bovine mastitis milk samples. A total of 50 (4.9%) Pseudomonas spp. was isolated from 1,023 samples, those collected between 2018 and 2021, derived from 110 dairy farms. The prevalence of the identified species of Pseudomonas isolates was as follows; P. aeruginosa (70.0%), P. fluorescens (14.0%), P. putida (10.0%), P. fragi (4.0%), and P. chlororaphis (2.0%). Most of somatic cell counts in the quarter milk carrying Pseudomonas spp. were less than 3,000,000 cell/ml (90.0%). The isolates of Pseudomonas spp. showed high susceptibility to cefepime (98.0%), ciprofloxacin (98.0%), ceftazidime (96.0%), and colistin (96.0%). The rate of antibiotic resistance in the isolates was highest to ceftiofur (92.0%), followed by the resistance rate to chloramphenicol (86.0%) and trimethoprim/sulphamethoxazole (80.0%). In addition, there is a remarkable difference in antimicrobial resistance pattern among Pseudomonas species. P. aeruginosa and P. putida showed a similar resistance pattern, whereas P. fluorescens showed exceptionally lower resistance to trimethoprim/sulphamethoxazole and chloramphenicol than that of the other species. This study showed that prevalence of Pseudomonas spp. other than P. aeruginosa were 30.0% in bovine mastitis milk, and the occurrence rate of antibiotic resistance were similar or higher level, compared with the previous reports on the mastitisderived Pseudomonas spp. isolated in Korea.

키워드

과제정보

본 연구는 농림축산검역본부의 농림축산검역검사기술개발사업(과제명: 젖소 유방염 원인균 및 항생제 감수성 양상 조사, N-1543081-2017-36-01)의 연구비 지원에 의해 수행되었다.

참고문헌

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