it all depends on where you are located and hay testing is great BUT but BUT here ... you can test ten bales from ten acres and get ten different results.
For hay on a horse that can deal with it I LIKE alittle alfalfa 20 to 30% for the added lysine. Hill work and pole work is good for topline as well as backing but it all must be done properly working from the hindend to get the best results.
I perfer a ration balancer developed in the area you live.... Seminole for down South, Kent for the Midwest, LMF for the West Coast and Buckeye for the EAst coast...some local mills are now marketing them for that area as well.
Doess that make sense??
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 :)