A couple times now, I've seen leg of lamb for sale at the regular grocery store nearby that is labeled "Product of Australia." It is not labeled grass fed or organic.
My understanding is that cows and sheep are generally not fed grain in Australia, so even though it's not labeled grass fed, I'm thinking it probably is. Also, even if not certified organic, my assumption is that cows and sheep are generally raised properly in Australia.
Are these safe assumptions? Or, are there CAFOs, even in Australia?
Most of the lamb in Australia are grass fed, a significant proportion are grain finished and a very small minority are fed exclusively grains, also my source is dated, by 5 years or so, the comment that new zeland's meat is more likely grass fed is also accurate according to what I've read.
See detailed discussion in the comments:
Probably not grass fed. I would proceed w/ caution. You're much safer w/ New Zealand lamb, but you'll have to pay ($$).
CORN FED BEEF AND PALEO 9 Answers