all of the stuff telling you what they NEED is in grams ... the NRC Nutrition Requirments for horses gives the numbers I posted that is where I pulled them from ...
The reason I linked that article is the it shows the difference in crude protiens and the actual amounts that get digested and used.
If you search for links by me at some point I posted the NRC requirements and anytime I post those it is on the no work or moderate work loads.
So the 500 to 720 is a NO WORK horse of approx 1100 lbs
I have been called the NSC Nazi more then once ... I hate traditional feed methods of loading our horses up on grains and junk food :)