CategoryPre-Harvest Pork Safety
Date Full Report Received05/17/2010
Date Abstract Report Received05/17/2010
InvestigationInstitution: Iowa State University
Primary Investigator: Locke Karriker
Co-Investigators: Mike Apley DVM, PhD, DACVCP, Hans Coetzee
Funded ByNational Pork Board
For the plasma concentration study, 15 plasma samples were taken over 24 hours from 8 pigs in each of the two treatment groups. In the tissue residue study, samples of kidney, liver, fat, muscle, and injection site were collected at 2, 4, 6, and 8 days post-injection. In swine tissues, the accepted tolerance is no detectable concentration in the United States and 50 PPB in many of the export markets. There were no statistically significant differences in the injection sites by microscopic examination. Gross evaluation of muscle, fat, kidney and liver did not reveal significant differences in the frequency or severity of lesions. When tissues were evaluated microscopically, there were no statistically significant differences in the frequency or type of lesion.