Antimicrobial usage in the US pig industry


Pig Progress

Jan 9, 2021    


Tetracyclines were the largest class of antibiotics found in an analysis of their use on selected farms in the United States in 2016 and 2017.


That was the result of an analysis, made by scientists of the University of Minnesota, St Paul, MN, United States. The study was published recently in the scientific journalZoonoses and Public Health. The authors aimed to advance the understanding of antimicrobial use in the pig industry and to support antimicrobial stewardship initiatives.


The team used data on antimicrobial use, which were collected for the 2 years from swine producers in the United States. 9 large systems, collectively producing over 20 million market pigs annually, voluntarily provided data.


Scope of the study: Growing pigs


The scope of the study was limited to growing pigs, and the granularity of data varied across the systems. Data were summarised both qualitatively and quantitatively by antimicrobial class, active ingredient and route of administration (injection, water and feed). Data on the purpose of administration, doses and durations of administration were not available, but some information was provided by the responsible veterinarians.


Aggregate data were similar both qualitatively and quantitatively in 2016 and 2017, although marked changes between years were evident within systems for some antimicrobials.


Majority of antimicrobials used are tetracyclines ...


Also antimicrobial initiatives in beef cattle, dairy, turkey and chicken ...


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