Horses Tired in Winter
So, I live in WI. As I'm sure many of you know, this winter has been terrible: The snow, the cold, etc. My two mares live on my property in their paddock and have a shelter that is divided into a couple sections, so they can choose where they want to be and when.
Some quick background on the girls: Star is an 18 year old NSH, and has some arthritis and ulcers, but we have her on medication/supplements. Lucky is a 12 year old Paint. They don't get worked in the winter, as we do not have an indoor arena, and it is treacherous in the fields; they really don't like walking around the paddock all that much either.
They both seem tired almost all the time, and Star especially seems lethargic. We have her on daily supplements for the ulcer and arthritis, and we give her medication for these things as needed. I know that horses don't go into hibernation, but can they get some version of SAD (Seasonal Affective Disorder)?
I was just wondering if anyone else was experiencing this with their horses, or if this is something that I need to worry about.