Characteristics and isolation of Listeria spp from poultry meat, products and environmental specimens in chicken slaughterhouse II. Serotype and antimicrobial susceptibilities of L monocytogenes isolates

Son, Won-geun; Kang, Ho-jo

Korean Journal of Veterinary Research 1991;31(3):279-284.

Won-geun Son, Ho-jo Kang

College of Veterinary Medicine, Gyeongsang National University

도계장 유래 닭고기와 부산물 및 환경재료에서 Listeria spp의 분리 및 분리균의 특성 II. 분리한 L monocytogenes의 혈청형과 항균제에 대한 감수성

손원근, 강호조

경상대학교 수의과대학

Abstract

To investigate the epidemiological aspects of listeriosis, serotypes of L monocytogenes and antimicrobial susceptibilities of Listeria spp isolated from chicken carcases and chicken slaughter house environmental specimens were determined. Of 28 L monocytogenes strains, 12 strains(42.9%) were serotype 4, and the remaining 16 strains were untypable. Peak distributions of minimum inhibitory concentration$({mu}g/ml)$ of the isolates were $0.78{mu}g/ml$ for ampicillin, $0.39{mu}g/ml$ for erythromycin and penicillin G, $1.56{mu}g/ml$ for tetracycline and $6.25{mu}g/ml$ or $12.5{mu}g/ml$ for chloramphenicol, and $3.13{mu}g/ml$ to > $100{mu}g/ml$ for kanamycin and neomycin. Most of 214 isolates were sensitive to ampicillin and erythromycin, but 20. 1~78. 0% of the strains were resistant to tetracycline, kanamycin, penicillin-G and neomycin. Single or double drug resistance were observed in 75.8% of the resistant strains. The most common resistance patterns were Nm P-G(37.4%) in double pattern and P-G(23.7%) in single pattern.

Key Words: Chicken, L monocytogenes, serotype, antimicrobial susceptibilities