Agreed with above--NO MAYO, bc it's base is eggs and your horse is a herbavore. (Might be good for your old dog?!?)
UNfortunately, every horse over 30 yo wil NOT have any tooth growth. All the teeth left in his mouth are wearing down or falling out at this point. He might enjoy grabbing mouthfulls of grass but most of it is now falling out of his mouth, unmasticated, undigested. He needs ANY food that can be made into a mash and any food that won't wear his leftover teeth down ANY MORE. I prefer Purina Equine Senior--lots of good senior food-but that's bc it's been tasted on elderly horses (AT Southern Illinois University's Ag school) and they found that their elderly horses that had little or no teeth did indeed gain weight being fed that as a mash. EVERY horse can have different feeding specifications, so I'd check with your Vet about what to feed HIM. =D
(You're an angel caretaking an old horse!!)
He actually does pretty well with grass, even hay, although I now give him chopped hay which he loves. His senior is very well soaked to the point where it's almost soupy. I do not like purina senior at all, I put him on that last year on our vets recommendation and he just kept loosing weight on it, triple crowns ingredients are 100x better then purina's! Our vet does not know a whole lot about nutrition(most don't, as the 3hrs they get on it are given by the big feed company).
Agree with what others have said, except this bit. Wheat is not a good feed for horses & wheat bran is seriously high in phosphorus, which can lead to probs such as 'big head' & other skeletal issues, due to calcium deficiency. Low starch/sugar diets, high in fibre are best and a little oil can be good, but not much and it must be added very gradually starting with tiny amounts, for the horse to produce the enzymes to digest it.
Sounds like you're doing ok by your old guy Rachel... so long as you don't bother with the mayo
Thanks Loosie, I've nixed the mayo idea lol What type of oil would you suggest and how much to start and how much to work up to? I've heard mixed things about feeding oil so I've been hesitant to do so.