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Antimicrobial drugs are fed to hogs at sub-therapeutic levels to prevent disease and promote growth. However, there is concern that the presence of antimicrobial drugs in hog feed is a factor promoting the development of antimicrobial drug-resistant bacteria. This study describes the extent to which antibiotics are used in hog production and how this changed between 2004 and 2009. This study also uses a sample-selection model to examine the impact that use has on the productivity of U.S. hog operations. Using hog producer data from 2004, the analysis did not find a relationship between productivity and sub-therapeutic antibiotics fed during finishing, but productivity was significantly improved when fed to nursery pigs. These results are being evaluated using similar data from 2009.

Keywords: antibiotics ; hogs ; sample selection

Subject(s): Farm Management

Production Economics

Issue Date: Jul 24 2011

Publication Type: Conference Paper/ Presentation

PURL Identifier:

Total Pages: 32

Record appears in: Agricultural and Applied Economics Association (AAEA) > 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania

Autor: McBride, William D. ; Key, Nigel D. ; Mathews, Kenneth H., Jr.


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