The whole issue of how antibiotics get used in agriculture — as growth promoters, as prophylatic treatment to prevent spread of infection within a farm, or as true treatment — is intensely controversial. For a sense of how farmers feel embattled, read the comments to this entry at FairFoodFight on whether there is a distinction between "Big Ag" and "small ag." and consider that the PAMTA legislation I posted about in December, which would require veterinarian oversight of farm use of antibiotics, has been strongly opposed by agricultural interests every time it has been introduced. (Large-farm use of antibiotics, let me remind you, has been concluded to be the driver behind the emergence of "pig MRSA" ST398.)
But I recently ran across two pieces online that I want to draw your attention to, because they demonstrate that thinking in agriculture about antibiotic use is not monolithic, and may be changing. Both were posted on the same site, the Illinois-based Agri-News Online.
First, from James Pettigrew, a professor of animal sciences at University of Illinois, a pessimistic but realistic assessment of how changing public attitudes about antibiotic use will affect what farmers can do, "Broad restrictions on antibiotic use would reduce animal welfare and productivity":
Second, from a writer named Darryl Ray, who isn't otherwise identified, a plea for refraining from demonizing critics of antibiotic use, "Animal producers should take antibiotics criticism seriously":
I don't know that I agree entirely with either writer. But I'm tremendously encouraged that a publication that speaks entirely about farming, to farmers, can run thoughtful pieces looking at ag antibiotic use from several angles, as something to be evaluated, debated and potentially adjusted, and not as a practice that cannot be examined but must be maintained unchanged.