Although a deadline is looming for significant changes in how livestock antibiotics are administered, farmers, veterinarians and feed mill owners still have plenty of questions.

That was the message last week during a session in Ames on the new Veterinary Feed Directive (VFD) rule issued by the Food and Drug Administration (FDA).

The VFD rule, which is a part of a plan to combat antimicrobial re­­sistance, requires a written statement issued ...