I assume OP meant antibiotics for growth (not for infection). However, the FDA is already phasing it out: http://www.fda.gov/AnimalVeterinary/GuidanceComplianc

I assume OP meant antibiotics for growth (not for infection). However, the FDA is already phasing it out: http://www.fda.gov/AnimalVeterinary/GuidanceComplianceEnforcement/GuidanceforIndustry/ucm216939.htm#question9 http://www.fda.gov/AnimalVeterinary/GuidanceComplianceEnforc...