The use of antimicrobials in feedlot cattle, as in all food animal species, has come under increased scrutiny because of concerns about the potential transfer of resistant zoonotic pathogens to people and also transfer of resistant genetic determinants to human pathogens. A pathogen of concern related to resistance in cattle is Salmonella spp. Transfer of Escherichia coli O157:H7 through the food chain, while a valid zoonotic disease concern, is not related to an issue of resistance. The American Association of Bovine Practitioners publishes Prudent Drug Usage Guidelines, which provides guidelines for antimicrobial usage in cattle feedlot operations.
OTHER TOPICS IN THIS CHAPTER
Health-Management Interaction: Beef Cattle
Beef Cattle Breeding Herds
Reproduction
Cull Cow Selection and Management
Nutritional Management
Health and Production Management Program
Vaccinations
Calf Management
Replacement Heifers
General Health Management Considerations
Beef Feedlots
Economic Impact of Disease
Implementing a Feedlot Medicine Program
Feedlot Records
Vaccination Protocols
Nutritional Advice
Disease Epidemics
Control and Prevention of Disease in Feedlot Cattle
Beef Quality Assurance and Beef Safety Programs
Development of Antimicrobial-resistant Bacteria in Feedlot Cattle