Currently I feed:

1 pound of whole oats

1/2 pound renew gold

1/2 pound Trinergy -made by McCauley 's 

I feed this ration AM and PM to my 17 year old barrel mare. We dont have good pasture where I live. She gets alfalfa hay and grass hay. Also this winter i started mixing up a PM mash of molasses free beet pulp pellets and alfalfa pellets. Here is some background info on her:

She is 17 this year. She has hocks/stifles injected. Racey build. Frenchmans Guy granddaughter on top Dash Ta Fame granddaughter on bottom. She paws. She is ulcer prone. Usually flairs up in the winter. We run a lot of rodeos and she is hauled quite often. Runs 1/2d has a great resume. 

Here is the issue....I'm just not happy with her top line and she is showing symptoms again of ulcers, which I will treat. Someone suggested after treatment I put her on a senior feed and recommend Triple Crown Senior for her ulcer issues. Would you switch? I had thought about maybe just adding a little TC senior in to what I'm feeding and/or taking something out. What would you change? Please be kind.

This is the write up on the Trinergy supplement she is getting:

Features

• Specially designed for racing and performance horses.
• The stresses of training and competition (e.g., strenuous exercise, high exposure to airborne irritants and pathogens, shipping, confinement, etc.), require unique nutritional support.
• Supplies high levels of specific vitamins and minerals with normal functions that include:
  • Antioxidant activity
  • Maintaining the integrity of muscles and lung tissue
  • Production of connective tissue (maintains tendon strength and elasticity) and activation of the immune response
• Provides all additional minerals and vitamins required by horses
• Extremely palatable (the perfect solution for the "picky eater")
• High fat content (only vegetable oil added)
• Available in approximately 3/16-inch diameter pellets

I can't find an actual ingredient list for the McCauley product, so I can't say if that is something you want in an ulcer prone diet or not. I would typically take all the oats away from an ulcer prone horse. Increase the Renew Gold to 1 1/2 pounds total per day, increase the alfalfa fed (this is a benefit to both hind gut function and ulcer prevention). Check teeth, the most often missed issue in horses that fail to thrive on a sound diet. 

Win

From what I understand (at the moment) for topline concerns (lacking) horses need appropriate amounts of amino acids that they arent getting from forage or pastures. I always thought oats didnt provide much actual nutrition. I dont have proof so dont ask lol! Just from what I've read and heard. Plus they are super high in starch. I'd add in a complete feed or ration balancer to make sure the horse is getting enough vitamins and minerals with essential aminos....  just my .02  I add bluebonnet sr therapy to my horses beet pulp mix, just a little bit to make it palatable with his platinum mixed in. I was feeding the ex factor but decided to move him over to the sr because it mashes in better with the soaked BP  hes a chronic food dropper ... theres a good reason why my chickens hang around him when he eats... he doesn't drop a bit when hes fed soaked BP mix.. I think it's just easier on him when his feed is mushy 

I will tag a picture of the tag of the Trinergy. Should I feed the senior version of RG? 

I'll post a picture of the ingredients for the Trinergy. Should I feed the RG senior?

This. Get rid of oats & add more RG. Can't go wrong with extra alfalfa either. If she's that ulcer prone, you can put her on a daily preventative like MVP Gastro-Plex. I've also had really nice topline results lately adding some rice bran into the mix. I just use the Manna Pro meal one right now, about 3/4 cup a day, a full cup for my 27 year old. He has a nicer topline than anyone in the barn right now 

Bump

I've always understood that oats are not good for the ulcer prone horse.

I've always heard both ways.....I've been told they are fine for ulcer horses and also not fine. It is so hard to sift through!

There is no high NSC grain that is fine for ulcer prone horses. Of all the high starch grains oats are perhaps the safest due to the high fiber content. A low oat inclusion in the diet of the healthy horse may be tolerated, but I would never add them to a ulcer horse.