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....."What was/is the ESC + Starch in the hay you were/are feeding at the time when you experienced these crises?".....
These occurrences were last year when my mare was severely IR but not yet diagnosed PPID. This is the scenario I mentioned in another recent post/topic whereby I could not get any of my local vets to believe my mare was in fact early PPID (no clinical symptoms, borderline 36.6 ACTH, Cornell), etc until I found she was repeatedly hyperglycemic (in retrospect I believe commercial labs I was using were showing falsely lowered glucose results bc of the collection technique all during the time of mare's diet/exercise refractory IR (late summer '14). All last summer my mare was competing heavily (eventing) & was on soaked grass hay (roughly 8.0% *before* soak) and never more than 7.5% esc+starch bagged/chopped forage (and I weighed every serving down to the ounce!) yet she was still having severe insulin swings due to her as-yet-unknown PPID. Early on during the Summer of Hell as I now call it, my vet advised to add one of the 1-lb all-around 30% protein supps (I tried TC, Poulin's, and McCauley's) and each time had a terrible insulin spike. My mare is one of the cursed ones that cannot handle any fats, or a single bite of grass, any kind of grain product, etc and that is true still today, even with IR well-controlled on pergolide. Im way too gunshy to try one of the products now, and its a moot point anyway, because I would much rather acheive a tight vit/mineral balance with a custom supp blended to augment my hay, rather than blindly hoping im doing the right thing by using an 'all-purpose' supp for fatties like the 30% supps now availhi Kathy,
Hopefully that answers your question. Unfortunately Neo erased my painstakingly detailed CH on my mare and Ive yet to update & repost it.
Kerry in NY