In Africa we experienced that all animals like hen, pork, sheep, goat, cow and ox where walking around without any fencing. Only experience one fence in Zambia, keeping the cattle together and away from predators. There were nearly no tractors used, and only in some areas of Zambia they seemed to have large scale production of groceries.
In Japan we did not see one single cattle. Not a hen, nor a cow. We did see large areas with rise, but no tractors at all.