where i work, the laminitic pony gets mollichaff hoofkind with alfa-beet and high fibre nuts soaked, twice a day. but three if she rides. Hope this helps.

How old is your horse??

I would personaly talk to the Veteran horse society,

If your horse has had lami i would just feed her Dengie Alfa A Lite as they say this is ok for horses who have had lami, i would only feed a small amount until the grass stops growing I would try and keep off the Build up nuts/mixes as this could start off her Lami again even in the winter. You could try a High Fibre Nut (like from Spillers) as again this is approved by the veteran horse society and has the hoof stamp on it which indecates its ok for horses who suffer from lami.

Also have a chat with fed companys like Dengie they be able to help as well