Well one of the reasons for me switching from alfalfa to grass is this...For years I lived in AZ. at a boarding stable I did all the feeding and lived right on the premises, well we got the Best alfalfa available to feed the boarding horses and had a contract to get the Dairy Hay delivered... Well anyway to make this somewhat short My pet pony Josh I fed so VERY little of that hay I could not even feel the weight of the flake in other words I would Pull a flake apart and what did we call that a Whiff instead of a flake I fed a whiff of hay...He Foundered in both front feet..When I came back home to Wisc..That next winter Josh was in so much pain He could not even stand up~!
I had him at that time at my friends farm Dave, Who just happens to be also my vet friend~!!! He gave him some Bute a very little now mind you then in the spring I made a pen from him at my house and took him home...But was on R & R the rest of his life.....And I did not have to give him anymore Bute either...But both cofin bones had already rotated~! Now that was from that very very rich alfalfa that is grown in AZ. Testing as high as 28% protein way to high for my little 40 inch Shetland pony~!! Josh was in a stall by himself and I was the only person that fed him He received NO grain other then maybe a handful once in awhile as a treat So that founder was directly responsible for that pet pony of mine foundering.....And was backed up with my vet also~!
So no more Alfalfa at all for ANY horse,,, mini,,, donkey,, or equine,, that I may get in the future~! Only alfalfa I get will be fed to a steer that I raise every 2 years~!