Thank you.
I'll attempt to address your questions as best as possible.
It's not a simple question to stop using antibiotics inappropriately, because it's a very grey and complex area.
Dr. Hansen raised two key issues. One was the use of ceftiofur, and the second was the use of growth-promoting drugs. Those are two opposite spectrum issues. One is the use of a class I drug that's classified as critically important for human medicine. It is used in the chicken industry strategically for one particular issue, which is omphalophlebitis in young day-old chicks. The other is an issue of using drugs that are unimportant to human medicine, or class IV drugs, to prevent subclinical disease from becoming clinical.
So your question is very complex, because it deals with a myriad of issues to stop using antimicrobials in these instances.