Thanks all. More info:
My 29 year old QH mare with the limited chewing ability had been getting 6 lbs TCS, fed in 2 lb portions over 3 meals (breakfast, dinner, night check), with timothy/alfalfa cubes at dinner and night check. Out on grass 7am-6pm, free choice hay in her stall. As I’ve been experimenting with changes in the last two weeks since my vet was out, I’ve upped her to 9 lbs over those same 3 meals, in addition to more cubes. I feel like I’m already seeing some weight gain. She’s never been tested for IR. We have tested her for Cushing’s fairly recently and she came out on the equivocal band. Given some symptoms (struggles to heal, the weight loss, some inappropriate lactation), we just added half a Prascend tablet a day. She is fully retired.
My 22 year old Dutch warmblood gelding (4th level schoolmaster I have had since May) has been getting 6 lbs TCS fed in 3 lb portions over 2 meals (breakfast and dinner). Out on grass 7am-6pm, free choice hay in his stall. This is what he was fed before he came to me but I will admit that he was pretty lean – looked more like a TB than a WB. We’ve been working on building a better topline and it’s improving slowly, but he’s definitely put on more muscle than he had when he first arrived. He is admittedly in very light work - 3 days a week still mostly at the walk (but active, working walk) as we’re trying to get him to relax and work over his back more. Even before the vet was out and decreed him too lean going into the colder months, I had recently added SP’s muscle building supplement to see if that might help him put on more muscle. After a month of that, switched to a pure gamma orzanyol supplement and he’s been on that maybe 3 weeks. He basically refuses to eat any hay cubes. No IR or other concerns for him. He is a mild cribber.
I historically have fed my 29 year old ground flax when the grass dies so just bought a bag of that. And I was thinking I would do that for the 22 year old, as well. (My easy keeper is also super bug sensitive so I have her on the KER omega 3 oil, even though she certainly doesn’t need any extra fat.)
I also am open to feeding hay pellets to either of them. I guess my underlying concern was whether more than 6 lbs of the TCS was too much so I was looking for non-grain alternatives, hence the initial experiments with the hay cubes and SB.