Objectives: The aim of the study was to determine the grouping and microbial resistance in Salmonella isolates from pig herds, abattoirs and clinical cases. Methods: Direct culture of lesions was collected from clinical cases. Feces was collected from pig herds and abattoirs. Preenrichment (BPW) and selective enrichment (TT, RV) were processed then plated on selective agars. Isolates were grouped by sero-agglutination and 16 antimicrobial discs were selected for agar disc diffusion tests. Results: S. Cholerasuis was the dominant strain isolated from clinical salmonellosis cases. Grouping of the isolates found in pig herds and abattoirs included group B and others, but group C1 was only found in abattoirs. Microbial resistance of the clinical cases was 78.5%, and of the healthy pigs from abattoirs and pig herds, 39.4% and 39.2%, respectively. Conclusions: The isolated Salmonella from ill pigs has substantially different serotypes and drug resistance than from farmed and slaughtered healthy pigs. Therefore, healthy pigs slaughtered in well-processed slaughterhouses can reduce the risk of human Salmonella infection.

沙氏桿菌 ； 豬場 ； 屠宰場 ； 分離 ； 抗生素抗藥性

Salmonella, pig herd, slaughter house, isolation, antimicrobial resistance