Why would you give a horse that is fat and in good health grain???
That is not a snipe, it is aimed at all the people who say this, and is an honest question.
None of my broodmares are given any grain or feed or balancer....zilch, Nada.
The two stallions are fed well.
The stallions are the slimmest of the lot, the mares are fat and sleek and very well indeed!!
I do put out mineral/salt licks, but that is all.
Personally I hate muzzles of any kind, and I would lean towards using a hotwire to graze your paddock down..horses are discriminate eaters and this is the most economic use of grass.
I have five mares up on my barn yard at the moment, it is about half an acre and was in good grass, I have just extended it to include a bit more pasture as they have grazed it down all over to lawn level
It really looks nice now, and all for the cost of picking up the poo every day, suits me fine!
They get no grain/pellets/whatever at all and have come down from what I would consider "grossly fat" to "elegantly in shape" in about five weeks, which I think is about right.
And, just on a side note, Rabbit is 28" and middleweight as far as bone goes.
Last time he was weighed he was 90kgs = 198lbs........and he is not fat, he is in correct body.
Of course Rabbit gives a whole new meaning to the word "active".
Perhaps what your mare needs is a more active lifestyle, and not so much weight loss as weight conversion???