re: Burger Kings new ad is tasty

Would be difficult to piece together if not familiar with the industry.

Common feed additives would be monensin, tylosin, and ractopamine. There are also vitamins, DFM's, and MGA for heifers.

The only one of those that is considered an antibiotic that needs a VFD is tylosin which is on borrowed time likely. It's fed to decrease liver abscesses. You can google all those and find what they claim to do, their efficacy, and the FDA approvals would deal with residues.

Drugs that have residual amounts in an animal have FDA regulated withdrawal times. Tylosin doesn't have one. I'm not being an industry shill when I say that antibiotic residues in fed cattle are not an issue. You might run into issues here and there at plants that kill cows, but those aren't coming from a feedlot and I still would say the potential health effects on humans are pretty much nil.

Use of feed additives in cattle is tightly regulated. A vet can write an off script deal for an injectable drug. There is no off label use allowed in feed additives. Additionally, in the vast majority of feedlots today those additives are weighed out by an automated machine where there isn't room for human error.