they're not meant to eat. cattle are meant to eat grass, but all industrially raised cow are fed grain. it messes with their stomachs. this enables the presence of e. coli and salmonella in their stomachs and in other parts of the animal and the antibiotics help to keep this under control, not entirely successfully as we've seen from all the outbreaks of salmonella and e. coli. >> so it doesn't make a difference -- would it make a big difference if you just treated animals better? >> it would make a big difference if you treated animals better, but the fact is that in much of europe, they even do -- not that i'm a fan of this but they even do industrial agriculture without use of antibiotics, it can be done. it's not as easy and it's not as efficient. >> my understanding is denmark is the leading pork exporter in the world if i'm not mistaken and they do it -- or high up in pork exporting and they don't use antibiotics. >> they don't use it