not IMO... you'd be much much better off feeding a high oil diet. try outshine (baileys) or copra meal or full fat soya meal. All about 19-20% oil, can be fed in small qty for shine or in slightly larger qty for muscle and condition.
this is based on milk solids which are relatively indigestible by the adult horse, so IMO it's money down the drain.
i think it is quite good, its put the weight on my TB without the fizz! i know plenty pros that use it to give the hot ponies some fat to build muscle, but suppose what works for one not always for another.
