This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Sato, K.
Right arrow Articles by Downes, F. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sato, K.
Right arrow Articles by Downes, F. P.
Agricola
Right arrow Articles by Sato, K.
Right arrow Articles by Downes, F. P.

 Previous Article  |  Next Article 

Applied and Environmental Microbiology, March 2004, p. 1442-1447, Vol. 70, No. 3
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.3.1442-1447.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Comparison of Prevalence and Antimicrobial Susceptibilities of Campylobacter spp. Isolates from Organic and Conventional Dairy Herds in Wisconsin

K. Sato,1* P. C. Bartlett,1 J. B. Kaneene,1 and F. P. Downes2

Population Medicine Center, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan 48824-1314,1 Michigan Department of Community Health, Lansing, Michigan 489092

Received 27 May 2003/ Accepted 2 December 2003

The prevalence and antimicrobial susceptibilities of Campylobacter spp. isolates from bovine feces were compared between organic and conventional dairy herds. Thirty organic dairy herds, where antimicrobials are rarely used for calves and never used for cows, were compared with 30 neighboring conventional dairy farms, where antimicrobials were routinely used for animals for all ages. Fecal specimens from 10 cows and 10 calves on 120 farm visits yielded 332 Campylobacter isolates. The prevalence of Campylobacter spp. in organic and conventional farms was 26.7 and 29.1%, and the prevalence was not statistically different between the two types of farms. Campylobacter prevalence was significantly higher in March than in September, higher in calves than in cows, and higher in smaller farms than in large farms. The rates of retained placenta, pneumonia, mastitis, and abortion were associated with the proportion of Campylobacter isolation from fecal samples. The gradient disk diffusion MIC method (Etest) was used for testing susceptibility to four antimicrobial agents: ciprofloxacin, gentamicin, erythromycin, and tetracycline. Two isolates were resistant to ciprofloxacin, and none of isolates was resistant to gentamicin or erythromycin. Resistance to tetracycline was 45% (148 of 332 isolates). Tetracycline resistance was found more frequently in calves than in cows (P = 0.042), but no difference was observed between organic and conventional farms. When we used Campylobacter spp. as indicator bacteria, we saw no evidence that restriction of antimicrobial use on dairy farms was associated with prevalence of resistance to ciprofloxacin, gentamicin, erythromycin, and tetracycline.

* Corresponding author. Mailing address: Population Medicine Center, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824-1314. Phone: (517) 355-1745. Fax: (517) 432-0976. E-mail: satokenj{at}cvm.msu.edu.

Applied and Environmental Microbiology, March 2004, p. 1442-1447, Vol. 70, No. 3
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.3.1442-1447.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Kaneene, J. B., Warnick, L. D., Bolin, C. A., Erskine, R. J., May, K., Miller, R. (2008). Changes in Tetracycline Susceptibility of Enteric Bacteria following Switching to Nonmedicated Milk Replacer for Dairy Calves. J. Clin. Microbiol. 46: 1968-1977 [Abstract] [Full Text]  
  • Inglis, G. D., Morck, D. W., McAllister, T. A., Entz, T., Olson, M. E., Yanke, L. J., Read, R. R. (2006). Temporal Prevalence of Antimicrobial Resistance in Campylobacter spp. from Beef Cattle in Alberta Feedlots.. Appl. Environ. Microbiol. 72: 4088-4095 [Abstract] [Full Text]  
  • Luangtongkum, T., Morishita, T. Y., Ison, A. J., Huang, S., McDermott, P. F., Zhang, Q. (2006). Effect of Conventional and Organic Production Practices on the Prevalence and Antimicrobial Resistance of Campylobacter spp. in Poultry.. Appl. Environ. Microbiol. 72: 3600-3607 [Abstract] [Full Text]  
  • Inglis, G. D., McAllister, T. A., Busz, H. W., Yanke, L. J., Morck, D. W., Olson, M. E., Read, R. R. (2005). Effects of Subtherapeutic Administration of Antimicrobial Agents to Beef Cattle on the Prevalence of Antimicrobial Resistance in Campylobacter jejuni and Campylobacter hyointestinalis. Appl. Environ. Microbiol. 71: 3872-3881 [Abstract] [Full Text]  
  • Cui, S., Ge, B., Zheng, J., Meng, J. (2005). Prevalence and Antimicrobial Resistance of Campylobacter spp. and Salmonella Serovars in Organic Chickens from Maryland Retail Stores. Appl. Environ. Microbiol. 71: 4108-4111 [Abstract] [Full Text]  
  • Bae, W., Kaya, K. N., Hancock, D. D., Call, D. R., Park, Y. H., Besser, T. E. (2005). Prevalence and Antimicrobial Resistance of Thermophilic Campylobacter spp. from Cattle Farms in Washington State. Appl. Environ. Microbiol. 71: 169-174 [Abstract] [Full Text]  


Copyright © 2009 by the American Society for Microbiology.   For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»