[Aliantha]

It's very common for grass fed beef to be 'topped off' either in a feed lot or the holding yards for a couple of weeks before being sent to slaughter.

Antibiotics are used in Australia in exactly the way Nirvana suggests it's used at her farm. In the case of illness which is unable to be treated without drugs. There is a certain level of residue allowable in the beef that is sent to market but obviously, not every beast has been sick, so the actual proportion of beef with a residual drug level compared to that with none is negligable. In simple terms, it's likely that we've all eaten meat which has a residue however, it wouldn't constitute anywhere near being a part of every meal or even every meal eaten where beef is involved.