[jtedward]

Your paragraphs 3 and 4 and excellent points I hadn't considered.

I think however it's not enough to conclude that consciously avoiding using antibiotics provides a net gain.

It, in my mind, becomes a bit of an economics question if you consider the trade-offs. Not dosing cattle could to food poisoning which could lead to higher human consumption of antibiotics.

I also have a fear of this becoming a panic, much like the anti-vaccine panic which leads people away from getting proper medical treatment.