Hi, re your first question OP, beet pulp, rice bran, alfalfa, soy hulls & copra are some good low starch/NSC options to grain/ high GI feeds.
Originally Posted by Numaany
VERY bruised (multiple stone bruises) on the soles, and was bleeding in some spots
Obviously I haven't even seen the horse's feet & not a vet but that sounds alarming. Where was the blood coming from? Not the 'bruised' soles I hope?? Why is the horse so thin soled & bruising? Why do you need to soak his feet? Why are you getting shoes - particularly bar shoes - on him? What measures did the vet suggest to rehab his feet?
When we have cool nights and fairly warm/hot days and the growth begins that is when the sugars rise in the plant. Mornings are the highest time of sugars.
Saddle, agree with the rest of your post, and that frosty nights & warm days allow sugars to build, but it's photosynthesis(ie sunlight) that produces sugars in plants, so they tend to be (depends on weather) highest in the afternoon/early evening. Plants then use the sugars to grow over night, being lowest by the early morning - so long as it's not frosty or such, as then they shut down & retain their sugars.