(and my goats aren’t using their heatED cubical much yet...)
We were warned to only clean out the barn once a year in the spring. That allowed lots of hay and poo to build up and help keep the barn warm in the winter. Michigan has bad winters and as you know goat poo is just little pellets break up easily as the goats walk around...
It made the best fertilizer for the garden in the spring when the barn was cleaned out...Our barn was ancient and the old post and beam construction. It wasn't as high as modern barns. The beams for the ceiling was old trees than still had the bark on. It had a hay loft over the barn so that also contributed to warmth...
We still had to water once a day and knock out the ice from the large buckets, they would really suck up the water when we refilled the buckets before it froze again.. Merry Christmas and Happy New Year........