Join Date: Jul 2011
Location: Northern Michigan
I'm just on the forum quick at the moment - my first thought is, if the horse died from colic, it was simply that - an impaction. As far as poisonous leaves/plants for a horse, the cause of death is not an 'impaction' per say such as in colic, but rather the toxins causing the horse's respiration to 'shut down', and rather quickly in many cases. Specifically with the 2 most lethal - Red Maple leaves, and all Cherry leaves. Oak leaves have the pigment 'tanin', and I've yet to hear of tanin being lethal. Red Maple leaves and all Cherry leaves, however, contain Cyanide, (their pigment is called, anthocyanin). My guess is that horse did indeed die of colic from ingesting too many acorns as you suggest - that sounds probable. Hope that helps. So sorry, by the way, to hear of the loss of your lovely horse.