Adjust Feeding Programs: As pasture quality or accessibility declines consider increasing hay and concentrates.
Help Horses Keep Warm: Horses kept outside need to eat more fodder. Horses produce a lot of heat during digestion. A generous supply of hay helps keep the horse’s internal furnace stoked.
Add Minerals: If your feeding program does not include a mineral supplement consider adding one.
Have Teeth Checked: Make sure your horse’s or pony’s teeth are looked after by an equine dentist. The inability to grind food properly will prevent a horse from getting all of the nutrients and energy it needs--especially if energy needs increase during colder weather.
Prevent Snowballs: If snow packs into your horse’s hooves try smearing the bottom with petroleum jelly.
If You Ride Frequently: Drying a horse out after a workout is difficult. Consider clipping a heavy hair coat. A clipped horse, without natural insulation, will require stabling and blanketing to keep warm.
Add Insulation: Consider blanketing during wet, very windy, or frigid weather. A wet coat looses its loft--like a wet down jacket, and won’t hold body heat. Windy weather pulls warmth away. Some horses are comfortable during very cold weather; some will be more comfortable in a warm winter blanket.
Provide Shelter: Even if your horses are stabled over night, provide them with a windbreak or shelter especially if you are away most of the day.
Banish Bots: Plan to deworm after the first heavy frost. Use a wormer that includes medication to kill bot larvae.
Continue Deworming: Continue a regular deworming program throughout the winter months.
Don't Let Hooves Get Overgrown: Keep you horse’s hooves clipped. Clipped hooves will chip less, hold less snow, and will provide a bit more grip on slippery ground