Prevalence and Antimicrobial Resistance Pattern of Salmonella Isolates from Apparently Healthy Slaughtered Cattle in Ethiopia |
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Authors: | Alemayehu D Molla B Muckle A |
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Institution: | (1) Department of Microbiology, Infectious Diseases and Veterinary Public Health, Faculty of Veterinary Medicine, Addis Ababa University, Debre Zeit, Ethiopia;(2) OIE Reference Laboratory for Salmonellosis, Health Canada Laboratory for Foodborne Zoonoses, Ontario, Canada |
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Abstract: | The prevalence and antimicrobial resistance pattern of Salmonella isolates was determined from apparently healthy slaughtered cattle at Debre Zeit (Ethiopia). A total of 323 cattle were examined
for the presence of Salmonella in faeces, mesenteric lymph nodes, abdominal and diaphragmatic muscles. Salmonellae were cultured from 23 (7.1%) of the animals.
Salmonellae were isolated from 2 (3.1%) and 3 (4.5%) of 65 pooled faecal and mesenteric lymph node samples, respectively.
Nine (2.8%) abdominal muscle and 10 (3.1%) diaphragmatic muscle samples (n = 323 of each) were contaminated by Salmonella. About 60% of the serovars identified in the abdominal and diaphragmatic muscles were also detected from faeces and mesenteric
lymph node samples. The five different serovars isolated were Salmonella mishmarhaemek (48%), S. typhimurium (20%), S. enteritidis (12%), S. guildford (12%) and S. dublin (48%). The antimicrobial resistance profiles of 25 of the Salmonella isolates with 17 antimicrobials showed that 52% (13/25) of them were resistant to three or more antimicrobials. Both strains
of Salmonella (S. mishmarhaemek and S. typhimurium) showed multiple resistance to ampicillin, sulfamethoxazole and ticarcillin.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | antibiotics cattle drug resistance epidemiology Salmonella serovars |
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