The intensive use of antibiotics in animal agriculture contributes to antimicrobial resistance, creating welfare and public health consequences for both humans and animals.
Antibiotic resistance in animal agriculture represents a welfare failure at two levels: the chronic disease and crowding conditions that necessitate antibiotic prophylaxis cause ongoing animal suffering, and the resulting resistant bacteria harm humans who need antibiotics to treat serious infections. Reducing antibiotic use requires improving animal welfare conditions that create disease pressure in the first place.