Hi Lisa,
I find that when I soak my hay, my horses drink much less water than they do otherwise.  Her ACTH is a little higher than where we like to see it maintained (mid teens to low twenties) so you might want to keep an eye on that.  A TRH stim test, where they measure ACTH before and after hormone stimulation, would pick up early PPID.which could lead to elevated insulin, especially during the rise.  If that’s the case, some horses get pergolide only during the rise.
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