how do i determine if the hay is good quality for the goats?

[bj taylor]

the hay rolls have this type of wrapping, for lack of a better word. they sit outside. I have no barn that could possibly accommodate these big rolls. I do peel off the outer layers of a roll periodically to expose what has been kept in better condition - but they do not seem to care either way.
rain is a very rare thing here. we are pretty consistently hot and dry