Fermented feed and probiotics offer welfare-positive alternatives to antibiotic use in farm animal production, improving gut health and reducing disease without the welfare costs of prophylactic treatment.
Fermented feed and probiotic interventions address farm animal welfare through a fundamentally different mechanism than antibiotics. Rather than treating infection after it occurs (causing welfare harm during the infection period), these approaches strengthen gut health to prevent infection. Healthier guts mean fewer disease episodes, less need for antibiotic treatment, reduced stress responses, and better behavioral welfare indicators. Denmark's experience after antibiotic growth promoter bans demonstrated that probiotic and fermentation approaches could maintain or improve productivity while dramatically reducing antibiotic use. This represents a genuine welfare improvement that simultaneously addresses antimicrobial resistance concerns.