A horses lower limb is mainly tendon and bone and requires much less blood circulation than muscle and also avoids heat loss because of this. A horse is also able to shunt blood directly from the arteries into the veins in the foot to avoid the smaller capillaries when it gets really cold without damaging the foot.
Hi, I wouldn't have thought it would be bad for them as such, many horses cope perfectly well in sub zero temperatures for months at a time. I do think it might have some effect on some laminitic types though and snow/cold can trigger attacks, but presumably this is because their feet are already compromised with suffering from laminitis anyway. My laminitic is out in the snow with no problems luckily!
As an ex racerider, if I feel my horses feet and legs and they are cold then I can rest happy, no probs! If their bodies are warm then no worries for me
x
Oh yes, that makes a lot of sense thank you. I am glad I asked, I did wonder about it. Annies shod and her feet were a lot colder then the bare foot ones due to her shoes. But their bodies are just fine and warm.