OT: No offense taken on my part...After giving some thought, I deleted my post; because I think it would add fuel to the fire. In essence this is what I said:
I agree that we shouldn't be drugging horses, or really other animals for that matter.
I do not think that we can blame all lameness on running horses as two year olds. I think horses have been raced as two's for a long time...but incidence of lameness, etc. have increased. That tells me that while age may have some piece in the problem, it's not the whole problem. I think it's additive...probably three or four other reasons too...
--Surface issues (it is proven turf horses don't have nearly the lameness or shin problems "dirt" horses do)
--Repetition--hock problems in ranch, arena, jumping, barrel, rope, etc horses is increasing in incidence annually. Heck human ergonomic ailments (carpal tunnel) are increasing at a huge rate too!
--I think one reason we see so many track horses fired is because of the high level of diagnostics in a track situation. Could it be that lots of ranch, etc horses have cannon problems but we don't catch them? My guess is yes. Our horse Cash did not even show any signs of lameness but had a ton of heat in his cannon bones. To our knowledge, he is only the second horse we've ever had fired, and both were cold fired. That is the reason the "polka dots" show up on him so well---just like a freeze brand. Both horses went to have fairly sucessful racing careers, and the other horse is as sound as could be, and he's well into his 20's.
--Structure and shoeing-I think we have bred horses to be so "long and flat" strided that we have inadvertantly ended up putting more pressure on the long bones and joints. Add to this, racers tend to be shod to make them even longer, and I think probably add more stress. I have no proof of this, just my observation. I'd say the opposite is true of lots of arena type horses...and thus their hock issues.
I do think that we need to think about how we encourage regulation in the horse world, as I have the sneeking suspicion that it will come back to haunt us in the "food animal" world. HSUS and other activist groups know once they win a "horse" fight, it's easy to take down the other species.