젖소 유방염에서 분리한 Streptococcus 종의 분포 및 항생제 내성 분석

Hye Jeong Kang; Serim Hong; Dasom Park; Ha-Young Kim; Jin-San Moon

doi:10.7853/kjvs.2022.45.3.181

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자료유형: 학술저널

저자정보: Hye Jeong Kang (Bacterial Disease Division Animal and Plant Quarantine Agency Gimcheon) Serim Hong (Bacterial Disease Division Animal and Plant Quarantine Agency Gimcheon) Dasom Park (Bacterial Disease Division Animal and Plant Quarantine Agency Gimcheon) Ha-Young Kim (Bacterial Disease Division Animal and Plant Quarantine Agency Gimcheon) Jin-San Moon (Bacterial Disease Division Animal and Plant Quarantine Agency Gimcheon)

저널정보: 한국동물위생학회(구 한국가축위생학회) 한국가축위생학회지 한국가축위생학회지 제45권 제3호

발행연도: 2022.9

수록면: 181 - 189 (9page)

DOI: 10.7853/kjvs.2022.45.3.181

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Streptococcus is one of the major pathogen groups inducing bovine mastitis. The aim of this study was to investigate the antimicrobial resistance patterns of Streptococcus species isolated from bovine mastitis milk samples in Korea from 2016 to 2021. In total, 181 (10.3%) Streptococcal isolates were collected from 1,761 quarter milk samples at 122 farms; S. uberis 39.2% (n=71), S. dysgalactiae 29.3% (n=53), S. equinus 9.9% (n=18), S. suis 6.1% (n=11), S. parauberis 4.4% (n=8), S. lutetiensis 3.9% (n=7), others 7.2% (n=13). However, S. agalactiae was not isolated. The isolates showed the highest resistance rate to tetracycline (55.2%) followed by erythromycin (45.3%) and pirlimycin (36.5%). In contrast, all isolates were susceptible to ceftiofur, cephalothin, penicillin/novobiocin, and only single S. equinus isolate was resistant to both ampicillin and penicillin. Of 181 isolates, 64 (35.4%) were multidrug resistance (MDR). The resistance to pirlimycin of S. uberis (73.2%) was much higher than that of other species (0∼36.4%). All S. suis isolates were resistance to tetracycline. S. dysgalactiae showed lower resistance to erythromycin, pirlimycin and tetracycline than S. uberis and S. suis . The rate of MDR was relatively higher among S. uberis (73.2%) than among S. suis (36.4%), S. dysgalac-tiae (15.1%), others (0%). In conclusion, antimicrobial resistance in Streptococcus spp. should be regularly examined for appropriate therapies because the resistance patterns were various among the individual species.

#Bovine mastitis #Streptococcus spp. #Prevalence #Antimicrobial resistance

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