Why do they need blanketing? If they have a good coat, in good health, and a place to get in out of inclement weather, they should be fine. I never blanket any of mine unless they are very old and shivering, or ill, etc. Healthy horses shouldn't need to be blanketed.
Well that's a generalized statement if I've ever heard one
I have a very healthy 5 year old mare here that, once the temps dip below -5 cesius or so, will start shivering. Some horses cannot tolerate cold, period. Here she is on a warmer day at the end of March (the first day I had her blanket off)...Looks pretty healthy, huh? (and she had a very strong, healthy, fat filly the previous summer, too
)
I will say that she hasn't needed one yet...I keep hoping that she'll toughen up since..when the blanket goes on it can't be removed (except to groom etc., of course), once the temps are consistently frigid
She just doesn't get the best winter coat. It's shiny, lustrous, but only "fluffy". I watch the temps and her etc. and then put one on her as needed. I kind of love it as I don't need to clip her and she loves being in her snug blanket when it's -15 or more celsius. My other filly is set for the winter and I know I won't have to worry about her.
It's a huge myth that any horse that needs a blanket is thin, unhealthy, wormy, etc. Yes, horses that are thin, unhealthy, and wormy need blanketing. But there are plenty of horses that do not do well in cold weather that are very healthy. Coming from a huge Thoroughbred background...well, all of them were blanketed (as were the warmbloods). I agree; if a horse grows a nice, thick coat and is fine (and you don't want to ride him/her) don't blanket. But some
need to be.
Here is her fat (too fat) weanling filly (that didn't need blanketing lol) in her new home (the day after I delivered her).