Of the 400+ sheep here, we let just less than half into another field on our 60 acres for the daylight hours. The majority however cannot only live on hay, grass and supplements like energy blocks.
Being a sanctuary, most of our sheep are old, lesser-abled, or came to us because of some deficiency or health issue. To feed all of these guys takes around 2-3 hours.
Those who are a bit more hardy are fed in an area with troughs, but many can’t deal with the bustle of this, so are given their own bowl in one of the barns, We use almost 100 bowls, and always need new ones from the Amazon wish list, as they’re not very hoof-proof!
Some of the sheep, if they are very old or blind, are put into their own pen so that they can take their time to eat un-disturbed (it takes a long time to eat with only one or two teeth left!).