What does everyone like to feed their performing easy keepers? They are on alf/grass pasture and alf/grass hay 24/7 and both gain 100lbs just looking at food. Both are getting rode daily and competing 1-2x a week from here until this fall. 

As long as they don't loose too much weight, I wouldn't add anything to their diet. 

Mine get a pound of Purina Enrich ration balancer a day. 

My easy keepers get Purina Enrich Plus. It's a ration balancer and they get 1.5lbs a day.