title: Antibiotic resistance of fecal coliforms after long-term withdrawal of therapeutic and subtherapeutic antibiotic use in a swine herd.
abstract: Tetracycline resistance of fecal coliforms isolated from swine decreased from 82 to 42%, a decrease of less than 50%, after the use of all forms of antimicrobial agents were discontinued in the herd for 126 months.
mesh_terms: D000821:Animal Feed; D000818:Animals; D004352:Drug Resistance, Microbial; D004755:Enterobacteriaceae / Q000187:drug effects*; D005243:Feces / Q000382:microbiology; D013552:Swine / Q000382:microbiology*; D013752:Tetracycline / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D013752:Tetracycline