Food Animal Drug Regulations
Exercise 4 Identifying withholding times
Exercises
Level A. Use the withdrawal recommendation look up http://www.farad.org/wdilookup/ to find the withholding on lidocaine used for a local block in a dairy cow.
Exercises
Level A. What about xylazine? Is it FDA approved? Can you find withholding information?
CAUTION
Obviously we often use drugs that are not FDA-approved but that does mean we have to carefully follow AMDUCA guidelines (and are not uniformly good at doing so). While we tend to consider FARAD calculated withholding times as “approved” this does not equate to FDA approved drugs and label withholding.
Resources
If the drug is approved, the label should have the recommended withholding information (or a google search for the drug label should work).
Default withholding periods in New Zealand
