I was thinking for people in really hot areas who are looking for ways to cool their flock down, that maybe portioning up a day's worth of feed the night before and refrigerating it would be nice for the birds. That way the feed would be nicely fermented (before refrigeration), but cool when served. I gather the feed would stop fermenting further when it got too cold. From what I understand about people who ferment outdoors where they have low night-time temps, having a cold phase of each 24 hour day doesn't stop the fermentation process entirely, but fermentation pauses it when it is cooler.
Ok. Lol.... What I've been doing is after night feeding, I stick whatever is left over in freezer.... Then add fresh in morning..... It's usually not that much leftover.....but I will stop doing that....