Blanketing Horses in Cold Climates

A popular question always comes up when the temperature drops – should I blanket my horse in cold climates? The horse’s hair coat is an excellent insulator and works by trapping and warming air. A healthy horse with a thick, dry and clean hair coat can retain enough heat and be comfortable outside in cold climates.

A horse will continue to develop a natural winter coat until December 22 (Winter Solstice), as the days become shorter and temperatures become colder. Horses begin to lose their winter coat (and start forming their summer coat) as the days become longer (starting December 23) and temperatures start to warm (slowly). Blanketing before December 22 will decrease a horse’s natural winter coat.

Horses can acclimate to cold temperatures and often prefer the outdoors. However, blanketing a horse is necessary to reduce the effects of cold or inclement weather when:

  1. No shelter is available during turnout periods and the temperatures or wind chill drop below 5 F
  2. There is a chance the horse will become wet (e.g. rain, ice, and/or freezing rain, usually not a problem with snow)
  3. The horse has had its winter coat clipped
  4. The horse is very young or very old
  5. The horse isn’t acclimated to the cold
  6. The horse has a body condition score of 3 or less.

If a horse is blanketed, it is critical that the blanket fits properly. Poorly fitted blankets can cause sores and rub marks, especially along the straps. Remove the blanket daily, inspect it for damage, the horse for rub marks, and re-position it. Make sure the blanket stays dry and never put a blanket on a wet horse, wait until the horse is dry before blanketing.

Written by Krishona Martinson, PhD, Christie Ward, DVM and Marcia Hathaway, PhD, University of Minnesota. This and other horse nutrition articles can be found at http://www.extension.umn.edu/agriculture/horse/nutrition/.

When to Blanket a Horse: Ask the Expert

horse in snow wearing a red blanket representing When to Blanket a Horse

As the winter season approaches, the decision to blanket a horse can be a topic of confusion and debate. While some horses can thrive without blankets, understanding when it is necessary to provide extra protection and warmth is crucial. In this article, we address common questions and provide expert advice on when to blanket your horse during the winter months.

Question and Answer: Understanding Winter Blanketing

The Confusion and Personal Preferences

Question: “I’m confused about blanketing my horse during winter. Growing up, our horses were happily housed outside without blankets, as they had access to shelter. However, now that I’m boarding my horse, everyone at the barn blankets their horses and thinks I’m crazy not to. Can you provide some advice on blanketing during the winter?”

Answer: Blanketing practices vary based on individual circumstances, including show schedules and personal preferences of horse owners. While some horses may not require blankets, there are situations when blanketing becomes necessary to minimize the effects of cold or inclement weather.

When to Blanket: Key Considerations

To determine if blanketing is necessary, consider the following factors:

1. Lack of Shelter and Extreme Cold

Blanketing is recommended when there is no available shelter during turnout periods, and temperatures drop below 5°F, or the wind chill is below 5°F. The blanket provides additional insulation and protection against severe weather conditions.

2. Wet Weather Conditions

Blankets are beneficial if there is a chance the horse will become wet due to rain, ice, or freezing rain during cold weather. Wet hair reduces the horse’s ability to retain body heat, increasing the risk of hypothermia.

3. Clipped Horses

Horses that have had their winter coat clipped for specific purposes, such as showing or intense exercise, may require blankets to compensate for the lack of natural insulation provided by their coat.

4. Young or Elderly Horses

Very young or elderly horses have a harder time regulating their body temperature and may benefit from blankets to stay comfortable and prevent temperature-related health issues.

5. Horses Recently Relocated from Different Climates

If a horse has been recently moved from a southern climate to an area with colder winters, they may not have had time to acclimate to the lower temperatures. Blanketing can provide them with additional warmth until they adjust.

6. Poor Body Condition

Horses with a body condition score of 3 or less (on a scale of 1-9) may struggle to maintain their body heat and may benefit from the added insulation provided by blankets.

Understanding Winter Coat Development

Natural Winter Coat Growth and Shedding

Horses naturally develop a winter coat until the Winter Solstice (around December 22), as days become shorter. Afterward, they start shedding their winter coat and forming their summer coat as the days gradually lengthen. Blanketing before December 22 may decrease a horse’s natural winter coat growth.

Properly assessing when to blanket a horse during winter requires considering factors such as shelter availability, weather conditions, coat condition, age, and body condition score. While some horses can withstand the cold without blankets, others benefit from the added warmth and protection. Observing your horse’s behavior, consulting with professionals, and considering individual circumstances will help you make informed decisions regarding winter blanketing.

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Around the Barn: Winter Preparations

Even though this is a horse nutrition blog, nutrition is only one piece of the puzzle when it comes to keeping your horses happy and healthy.  As we head in to cold winter months, I thought I’d share some of my favorite tips for prepping your horse and some of the gear that goes with him!

  • Blanketing:  In general, horses adapt well to decreasing temperatures by growing an insulating hair coat.  As long as they have shelter to get out of wind and precipitation, and are able to meet their increased energy (calorie) requirement, they do quite well and can tolerate sub-zero temperatures. 
    • Keep in mind, the insulating value of the hair coat is compromised if it gets wet.  As temperatures drop below the critical temperature which is around 50°F on average, horses require more energy to stay warm, which is best provided by increasing the forage in their diet, not grain. 
    • Blanketing may be a good option if:
      • There is no shelter during turn out
      • The horse’s hair coat is clipped
      • You have a very young or very old horse that might not be efficient at maintaining body temperature
      • The horse is under-conditioned or under weight
    • Finding a blanket that fits well, is waterproof, breathable, and the proper weight (light, medium, heavy fill) based on the conditions are important considerations. 
    • If you already own blankets, dig them out before you need them and check to ensure they are clean, in good repair, and still fit your horse properly. 
    • Never blanket a wet horse, or put a wet or damp blanket on a horse.
  • Don’t forget to periodically remove the blanket and assess body condition, and check for any rub marks that the blanket may be causing.
  • Winterizing the barn and trailer: Fall is a good time to prepare your barn and trailer for colder weather.  Cleaning, installing or checking insulation, replacing screens with windows, ensuring ventilation is adequate, insulating water sources, cleaning and safety-checking heaters and electrical systems, are recommended.  
    • In the barn:
      • Check the roof for structural integrity and leaks
      • Clean gutters and install snow slides if needed
      • Plan for snow removal and de-icing walkways, if applicable.
    • In the trailer
      • Check the floor, lights, brakes, and tires and replace or provide maintenance as needed. 
      • Put together an emergency kit for you and your horse in the event of a break-down in winter weather. 
      • If you are on the road frequently, consider road-side-service for equestrians in the event of an emergency. 

Good luck, stay safe, and take a moment to enjoy the site of your horse playing in the snow if you are lucky enough to see some!

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