No need to shout.
And yes, I understand what a hay conditioner does.
My logic is the dryer and more thoroughly cured the hay is, the less prone it is to mold, period, both while stored and while set out being fed.
I live in Central Virginia, an area that's damp and humid, and I have not had a problem with round bale spoilage with bales that stayed out more than a week.
So your "rule" about not leaving the bales out for more than a week may be a valid generalization in other parts of the world, but it hasn't been my experience.
I think we all can agree the longer you leave the bale exposed to weather, the more prone it will be to mold and spoilage. However, I would add that the amount of time it takes to mold or spoil depends on a variety of other factors.
And back to the OP, it is perfectly feasible to feed round bales safely to 2 - 4 horses.
Last edited by maura; 03-20-2010 at 10:57 AM.