We feed in open air feeders, no problem with inhalation. Wyoming wind provides *plenty* of ventilation. Generally we don't have any mold anyway, and some animals are sensitive to it. Ruminants in general are much more tolerant of poorer quality roughage, up to and including light mold.
As I said, the best choice may be to resell to cattleman so that hay won't be a complete loss.
Moldy hay can also be used to make silage, the heat produced during fermentation will also kill mold, and the moisture in it prevents inhalation-which is the truly problematic part of mold. But you would be hard pressed to get a horse to eat silage, they know it's not what they are supposed to eat. Cows and goats, on the other hand, ferment their food and rechew it anyway, so they will eat it readily.
As I said, the best choice may be to resell to cattleman so that hay won't be a complete loss.
Moldy hay can also be used to make silage, the heat produced during fermentation will also kill mold, and the moisture in it prevents inhalation-which is the truly problematic part of mold. But you would be hard pressed to get a horse to eat silage, they know it's not what they are supposed to eat. Cows and goats, on the other hand, ferment their food and rechew it anyway, so they will eat it readily.