Percheron diet help!

Thanks Desert...I guess I maybe should go ahead and have the pasture and hay tested to see if it really is deficient too. The grass is good, by the looks of it anyway and the hay is quite nice visually. They will be more than happy to have the carrots!

Fresh green should, according to the article, provide enough in general.
Makes me think, we (Germany) used to pasture horses in summer and give loads of carrots in winter traditionally. I used to go through 2 sacks, 60lbs each, a week with three horses.
I think im going to run my "old" diet through feedxl, just out of curiosity .......

I thought green was enough too...but I can't answer what type of grass or quality it is in the pasture without having it tested. Aren't carrots high in sugar though?

They are.
Have you looked into Purina Ultium and the two Wellsolve feeds? Or just a low sugar/low calorie feed and add a vit/min supplement? Maybe add some alfalfa, that's low in sugar, and could replace some calories the healthier way?

How tall is she? To correctly measure her you go from the point of the shoulder to the point of the buttocks. That should take a few 100#s off your calculations. If she is in fact 2200#, that's way too much for a Percheron Mare (unless she's 19H) and with her comformational challenges, she needs to drop a fair amount. Do your diet analysis on where she should be (1700-2000#)

As far as the FeedXL analysis, how can the results hold any water if you don't have values for the hay? Low sodium is a non issue as she is getting that from her salt (loose preferably), B vitamins are synthesize in the hindgut so how could you possibly know if she's producing enough or not on a daily basis?

I don't want to add any type of grain since she is an obvious easy keeper. With the corrected measurements, she would be around 2200lbs. I plan on having her hay/pasture tested. However, that information would only be valuable for that particular cut/load of hay....eventually the hay will be a different cut or something. I'm just learning and trying to provide the best possible diet that I can for her, if that's possible without being a scientist.