[QUOTE=HealingHeart;7997061]
Locking of the joints is well known in the horse world, yet the world still uses & abuse the age factor anyway, all in the name of a $ and the fact their is another young horse that will take the place of that 7-8 yr racer, Reiner, cutter & so on when they break down & are shipped to slaughter. The horse industry has become a business 1st, & heart 2nd. Where there is money sitting in the field, there is no money being generated. People don’t give or allow the horse to mature, but rather force it. I have said it before, who in the horse world decided it was correct to start racing at 2. That means they are started at 14-16 mos? Those same people could have made a wiser choice to start the same race campaign at 4.
I guess that didn’t make sense, since someone has to feed & care for that $horse for those 4 years. Time is $$, $$ can not wait. It would be a surprise to see the horse’s Heath put 1st as we set these programs up.[/QUOTE]
Lets be sure we are on the same page here.
“Locking of the joints”?
What do you mean with that?
All horses at any age lock their joints when they fall asleep standing up, that is why they don’t fall down.
I think that maybe you mean how growth plates close, the same in all other organisms with a skeletal structure, dogs, humans and horses also.
How horse’s joints close, the lower ones is what most are talking about when starting colts, has been well studied.
When training race horses, many times you waited to do more than putz around with a colt until the knees closed, so a horse may not take a bad step and cause some “joint mice” in there, that may not reabsorb and cause problems later.
Some were started on full work before the knees closed without trouble, but since it is a possibility, most trainers would wait.
Other joints are not as sensitive to loads and other stresses as knees, so that extra care is not as necessary in other joints.
Knees in horses tend to “close” around 20 to 26 months of age.
See my story about the one feral horse that had rickets in his knees, probably from those knees closing while he was half starving in a drought.
I hope that explanation clears this a bit more.