At home I have one mini pony and 9 dwarf goats. Last year I switched to round bales since it was less expensive and way easier on my back. I have no indoor storage for hay on the property except for 5-6 square bales which wasn’t working. I roll the round bale off the back of my truck onto a pallet right behind my field. I then covered it with a tarp and pulled hay off it to feed. Unfortunately I didn’t realize that the tarp got a hole in it so this brand new last round bale got wet on half of the top. The old tarp was smaller and didn’t go all the way down the sides so I bought a much larger tarp. I am hoping that it’s because the hay got wet in the first place but with the new tarp it’s condensating on the inside at the top and making the entire top of the roundbale wet. At this point I’m leaving it uncovered, feeding the good interior stuff and pulling off and burning anything that might be moldy. Luckily the goats are a pretty good indicator they won’t eat anything but perfect hay. My question is will this be a problem with a brand new dry round bale?
Is it better to have a smaller tarp with air flow around the bottom or the large tarp that covers the entire thing? Is there a difference between having the black side up or the silver side up? Should I invest in a little temporary shed, though that would make it a lot harder to pull hay off. Is this just a summer heat issue?