High calf prices tempt producers to increase antimicrobial use, but Beef Magazine reported this week that unsustainable applications function like five-star vacations charged to credit cards with heavy future penalties.
- Overusing antimicrobial drugs creates resistant pathogens that future treatments cannot kill.
- Minimizing exposure during the mutant selection window stops resistant strains from surviving.
- Closing physical system gates prevents disease better than treating infections after animals fall ill.
Sustainable livestock practices require a paradigm leap rather than a simple shift, according to Dr. Robin Falkner, beef technical consultant for Elanco Animal Health. Falkner spoke with a semiretired cattleman in his 90s who recalled when fly tags were new and required only one tag per six cows. That short-term approach failed long-term performance goals.
"He told me his heirs are making payments on debts he accumulated through short-term thinking," Falkner told Beef Magazine regarding the generational debt of poor parasite management.
For flies, stewardship means cutting tags out at the chute when they stop working. For antibiotics and parasiticides, stewardship requires minimizing exposure during the mutant selection window where sensitive organisms are suppressed but resistant mutants survive and reproduce.
Many cattle products provide single-dose convenience with molecules requiring multiple days of treatment. These products can extend time in the mutant selection window, and the resistance selection pressure that comes with it, for days or weeks.
The issue is no longer primarily the organism, but more critically our inability to control it."
| Management Practice | Short-Term Approach | Regenerative Strategy |
|---|---|---|
| Fly Control | Leaving worn-out tags in place | Cutting tags out at the chute when efficacy drops |
| Drug Selection | Relying on long-acting combination products | Deliberate, evidence-based, and rotated modes of action |
| Disease Prevention | Treating active infections with antimicrobials | Finding system gates and closing them before exposure |
Switching products does not always change the active ingredient or mode of action providing disease treatment, because antimicrobials are frequently marketed under multiple brand names. Changing treatments improperly can alter disease risks.
Preventing loss of product access starts with managing disease risks using strategies other than antimicrobials. Falkner said that antimicrobials and parasiticides are not the only tools in the box, emphasizing that the most overlooked ones exist between producers’ ears.
Falkner outlined three critical management strategies for a regenerative approach to herd health. Producers must develop better questions to answer, create a shared vision among producers and veterinarians, and devise worthy goals to chase.
- Beef Magazine. Investing in Future Treatment Success. Published November 2026.
- Elanco Animal Health. Herd-health management and antimicrobial stewardship guidelines. Elanco.com/us.
