Prevalence and antimicrobial resistance of Salmonella from pigs at slaughter in Taiwan
Date Issued
2006
Date
2006
Author(s)
Chih-Hsien, Lin
DOI
zh-TW
Abstract
Pork has been described as one of the sources of human salmonellosis in many countries. This clearly demonstrated the spread of Salmonella occurred during the slaughtering process via contaminated environment, via carrier pigs and subsequent cross-contamination. The objective of this survey was to estimate the prevalence and antimicrobial resistance of Salmonella from pigs at slaughter in Taiwan. A total of eighteen different commercial slaughterhouses （twenty slaughter lines） were sampled during forty six visits from Oct. 2003 to June 2005. Carcass surface swabs were taken to evaluate the handling and sanitary practices in different slaughterhouses. Colon contents and mesenteric lymph nodes were taken to reflect the carrier status antemortem. Salmonella was isolated from 8.3% (76 of 920 samples), 3.6% (33 of 920 samples), and 2.0% (18 of 920 samples) of the carcass samples, colon contents and mesenteric lymph nodes, respectively. Among 127 Salmonella strains, the most prevalent serotypes were S. Anatum（31.5%） and S. Derby（25.2%）. These two serotypes, S. Anatum and S. Derby, also were predominately isolated from carcass surface swabs, colon contents and mesenteric lymph nodes.
The rates of resistance to the following drugs were observed: tetracyclin(88.2%), gentamycin(82.7%), chloramphenicol(54.3%), amoxicillin(34.6%), nalidixic acid(30.7%), ampicillin(26.8%), kanamycin(18.1%), cephalothin(7.1%), nitrofurantoin(6.3%), ciprofloxacin(0.8%). Among 127 Salmonella strains, 119 strains（93.7%）were resistant to 2 or more antibiotics.
Subjects
沙門氏菌
盛行率
抗藥性
屠宰場
豬肉
Salmonella
Prevalence
Antimicrobial resistance
Slaughterhouse
Pork
Type
thesis
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