No we feed by the basic rules of feeding grain, foxhunter. I am just always evaluating every horses weight, the kind of grain, the amount of grain and their social groups. Making sure no one is being pushed of hay or grain or water.
As for why we feed grain, its based on the individual horses we have. Some mares that are easy keepers and live well on hay and limited pasture. We also have horses that need grain to keep a healthy weight. We tried having them all off grain. Some started to get thin so we decided that horses on grain were better then thin horses.
The good news is that the owner looked at him and said this is the best he has ever looked. He is worried that if we don't cut down the grain he might get fat. So a scoop of each it is for him, twice a day.
I was so worried, this horse and I just had a horrible morning. He hates ring work, I hate ring work, we had to do ring work. Then he really pushed my buttons by not loading on the trailer. Which is one of my pet peeves. All the horses here load on the trailer with just one person, no excuses. This morning he would not load. It was so frustrating all I wanted was for him to just get on the trailer, stand for a few seconds and get off. So, this afternoon I had help we loaded him and he stood nicely. So, my partner in loading agreed we would do this every day until this horse does not throw a fit around the trailer.
So I was thinking about everything that has changed and trying to figure out what has changed and what might be causing this bad behavior. The grain was the only real change. That and the increased focus on ring work.