Antibiotic Use in Cattle: Welfare and Stewardship
Why Antibiotics Matter for Welfare
Antibiotics are essential welfare tools: without them, bacterial infections (pneumonia, mastitis, metritis, digital dermatitis) would cause far greater suffering and mortality. Maintaining antibiotic efficacy through responsible use is therefore a long-term welfare priority. Antimicrobial resistance (AMR) — the development of resistance in bacteria through antibiotic selection pressure — threatens the long-term effectiveness of these welfare tools.
Critically Important Antibiotics
Not all antibiotics are equivalent for stewardship purposes. Critically important antimicrobials (CIAs) — including fluoroquinolones, third/fourth-generation cephalosporins, and carbapenems — are designated as highest priority by the WHO because they are among the last-resort treatments for serious human infections. These should only be used in cattle when first-line antibiotics have been shown to be ineffective and sensitivity testing confirms CIA necessity. Responsible use protocols restrict their use.
The 'Metacam Approach' to Welfare
Good antibiotic stewardship does not mean withholding necessary treatment. The principle is: treat disease promptly with appropriate antibiotics when needed; minimise prophylactic and metaphylactic use; use narrow-spectrum antibiotics when effective; and always combine antibiotic treatment with NSAIDs for pain relief. NSAID use (meloxicam, flunixin) alongside antibiotics for painful conditions (mastitis, respiratory disease) significantly improves both welfare outcome and antibiotic efficacy.
Reducing Antibiotic Use Through Prevention
Reducing the need for antibiotics through disease prevention is the best approach to both welfare and stewardship. Vaccination, good nutrition, appropriate housing, and stress reduction all reduce disease incidence. Selective dry cow therapy (treating only cows with evidence of infection or high SCC at drying off) rather than blanket dry cow therapy reduces antibiotic use without compromising welfare or milk quality. Herd health plans must identify priority disease prevention actions.
Monitoring and Recording
UK legislation requires veterinary prescription for all antibiotics used in cattle. Medicine book records (mandatory) allow monitoring of antibiotic use trends. The RUMA (Responsible Use of Medicines in Agriculture) guidelines and Target 10 programme provide guidance. Comparison of farm antibiotic use against sector benchmarks identifies farms using more antibiotics than necessary, prompting investigation and targeted welfare and stewardship improvement.