Senior feed

That is so great of you to reunite the old owner and horse. I hope you menat 5 lbs of cubes and not just 5 cubes. 10 lbs of cubes per feeding pluse teh sr feed should put weight on. Have you tried beet pulp? Sr horses are a pain at times, when they suddenly decide they don't like that feed any longer. I also feed alfalfa oat molasses /shredded forage and can soak that for the ancient one. Makes a slurpy messy meal !

That is nice I bet there were two really happy campers out there that day

I got my two out of a rather bad situation too. Snipper, 16 year old QH mare, was about 300lbs underweight, had to survive on two flakes of straw a day, shared with her buddy. He us the boss of the two so he ate most likely most of it.
I started them slowly slowly with adding alfalfa to the straw and a handful of Omolene. When I brought them home after about 10days(had to fence a paddock first), I had them on free choice oathay/alfalfa and Snipper got 3lbs of Nutrena Life Design Senior and Omega Horseshine.
I have pictures here in my album, before, and after exactly one month

When I had my old OTTB (he was 32 when we had to put him down - heart problems) I used to feed Nutrena Seniors feed (soaked) and soaked beet pulp plus second cut alfalfa hay and free choice grass hay. He had virtually no teeth so the mainstay of his nutrition came from the soaked feeds; the second cut alfalfa was nice and leafy so he could at least get that into him; the grass hay really just gave him something to do. For him, the Nutrena and beet pulp did an excellent job of keeping him in good weight. He was fed twice a day with the Nutrena, beet pulp; once a day with alfalfa; free choice hay available at all times, by the way.