My rescue 19 year old belgian draft has slowly been putting on weight all summer. Now that the colder weather has arrived, the weight gain has stalled out. We opted to switch to Nutrena ProForce Fiber, mixed with ProForce Senior and a hay extender. We feed him 10qts per day and over the past few weeks we have seen an improvement in his topline. We also use vitamins daily. Once he is in better condition, we are going to step him down to 7-8qts per day to see if he holds steady once spring is upon us. If he doesn't, we can try going down to 6qts per day (which is what he was originally getting from the rescue in TC Senior) to see if he will maintain there as well. For me, I don't mind the extra cost of the grain as long as he is healthy and happy. If he needs 10qts for the rest of his life, so be it 
