We were told otherwise with Baytril. Maybe it's antibiotic specific? I just know that the CDFA told me this.I don't think this is correct. We had a duck last year with a fairly severe joint infection who was on antibiotics and antifungals for a few months. The vet was able to give us specific egg withdrawal times and said if we were really worried, there was a state lab we could send eggs to for testing. We don't sell eggs but have given them away without a thought.