Mollenkopf, D. F.; Mathys, D. A.; Dargatz, D. A.; Erdman, M. M.; Habing, G. G.; Daniels, J. B.; Wittum, T. E. (United States of America)
Preventive Veterinary Medicine (2017)
As part of the Naitonal Animal Health Monitoring System (NAHMS), large feedlots were identified in 12 US states as the source population for the study, with a subset participating in the Salmonella component. Feedlots in these 12 states accounted for 96.2% of cattle on feed and 86.1% of feedlots in the US. The target population of this study is the US beef herd.
As a component of the 2011 NAHMS beef feedlot study, from volunteering feed yards, 25 fresh individual fecal samples were collected form the floors of 3 pens of cattle- the shortest time on feed, longest time on feed, and a randomly selected pen- to screen for the presence of Salmonella based on established NAHMS sampling criteria as previously described.
AST Method: Broth Microdilution
Reference explicitly reports AST breakpoints: True
Reference reports using a MIC table: True
Is Excluded: False
| Country | Sub-Region | Sub-Region Detail |
|---|---|---|
| United States of America | None | None |
| ID | Note | Resolution |
|---|
| Title | Host | Host | Production Stage | Description | ROs |
|---|---|---|---|---|---|
| Chlortetracycline fed in diet | Cattle | Other | Farm | Chlortetracycline fed in diet | 1 |
| Tylosin fed in diet | Cattle | Other | Farm | Tylosin fed in diet | 1 |