sorry I confused you with L2R on the by-product comment.
I went to college and had an applied science degree and was a paramedic for 5 years, so we had tons classes on health as you might guess. Personally i've been involved in my animals food labels after my dog came down with many allergies, one being wheat. I've spend lots of my time over the past 3 years researching dog foods and have spent over the past 5 years researching specific foods for horses. I also have like I said over 25 years of personal experience in feeding different feeds.
Then about 3.5 years ago my friend purchasd a horse that has multiple allergies, the biggest being corn, oats, beet pulp and wheat. Talk about reading tons and tons of literature.
I've also found that in dog food a major filler they use is beet pulp and that as i've stated above is a huge allergy causer in those that are sensative to it.
I also fed dynasty pro before I switched to the stradegy. I like both products but I had to feed more of the dynasty than I do the purina.
My horse is not the norm. I'll start of with he's perfectly healthy, his teeth are great, he's wormed very regularly. He is 17.1 hands tall and still growing. He is fed 3 large flakes of hay 2x a day, about 3.5 lb of strategy 2x a day, he gets either a large flake of alfalfa hay or a scoop of alfalfa pellets or cubes plus about a 1.5 lb of safe choice.
There is no way he'd get by on just hay or a ration balancer. I work him hard and show heavily and this is what I found works best for him.
Now I do have a super easy keeper, 1 flake of hay and 1/2 scoop of oats 2x a day. I'd much wrather just feed him.