I don't use it & wouldn't generally feed something that high NSC. If your horse doesn't need to gain any weight, what's the rest of her diet & why are you feeding it? If for eg. it's only as a small treat, or handful to mix supplements in, I wouldn't stress about the high NSC so much. But I'd generally just go for a low dose, low GI 'ration balancer' to compliment the hay/grazing of an 'easy keeper', rather than a feed that's high in starch.
Right now she's getting hay, there are some mineral blocks in the paddock, safe choice maintenance, and I'm giving her some msm.
It's mainly for a treat, and also so that she gets a little extra for winter too since she's at the bottom of the herd.
What percentage is considered a lot for starch? I don't know a whole lot about nutrition (I'd love to learn, if you have any resources/websites, I'd love to read about it!)
Do you have any suggestions for a good feed? I want to give her the best I can. She's any easykeeper, I don't want something that will give her a lot of extra energy. I'm hopefully going to be riding her 4-5 times a week once the spring is here, but right now she isn't getting ridden a ton.
There's so many options of feed, it's overwhelming! I just know I don't want to give her sweetfeed :P