An antibiotic rule is­­sued last week by the U.S. Food and Drug Administration (FDA) will limit pig farmers’ ability to use some antibiotics to treat their animals. But industry leaders at last week’s World Pork Congress in Des Moines said they are prepared to work closely with farmers to smooth the rule’s implementation.

"If farmers continue to work with their veterinarians, talk with their feed suppliers, diligently keep records associated with VFDs (veterinary feed directives) and...