Preventing Winter Impaction Colic in Horses

Cold fronts roll in, pastures turn brown, and chores take longer. That's also when many horses start drinking less water and eating more dry feed, making winter prime time for impaction colic in horses. The good news is you can lower the risk with a few simple adjustments to your feeding routine. 

This guide focuses on the three big factors that matter most in winter: hydration, access to hay, and stress free feeding. 

What Is Impaction Colic 

Impaction colic happens when a dry mass of hay or feed gets stuck in the intestine. The horse's gut makes tight turns and has narrow spots that make it very easy for dry material like hay and grain to completely plug up their system. 

Winter naturally decreases the amount of water in your horse's system. When summer grass dies and hay becomes the main source of feed, the risk of colic increases. Fresh grass is roughly 60-80% water. Hay contains less than half that much. That means horses need to drink more once grazing is no longer an option. 

In addition, winter often changes turnout time, exercise, and feeding schedules. Those small shifts can affect appetite, water intake, and gut movement.

Hydration Is Your Number One Winter Colic Tool

Water keeps feed moving through the gut. It also softens manure, which helps prevent blockage. On average, horses drink around 10 to 12 gallons of water per day. Winter management should focus on keeping water clean and accessible.

Practical ways to help your horse get more water

• Offer warm water when possible. The AAEP reports horses drink about 40% more when offered heated water during cold weather.

• Use a tank heater or heated bucket so water is always available and not icy.
  

• Put out plain salt blocks to encourage more drinking, especially if your horse is a picky drinker.

• Make a mash by mixing grain with water. 

Winter Feeding That Keeps the Gut Moving

Your horse's digestive system is built for constant forage intake. Chewing forage creates saliva which buffers stomach acid. When horses go hours without forage, movement in the gut can slow down, acid builds up, and some horses may panic eat at the next feeding, all of which increase the risk of impaction colic. 

Feeding tips:

• Keep forage in front of your horse at all times. Avoid rationing hay. Horses should not go without forage for more than 2-3 hours at a time. 

• Avoid sudden hay or feed changes and big schedule changes. Slowly introduce new feeding routines over the course of a week or 2.

• Feed grain only when needed and avoid large starchy meals. Never feed more than 4-5 pounds of grain at a time. 

• Use more than one feeding spot for groups.  That way lower ranking horses get a chance to eat without the dominant ones guarding the only food source.

• Spread hay feeders out around the barn or pasture to encourage walking. Regular exercise naturally helps keep feed moving through the gut.

If your horse struggles to hold weight, talk with your veterinarian about:

• Dental check ups. Seniors are especially prone to dental problems that reduce their ability to chew properly.

• Parasite control. Worms can deprive your horse of nutrients even if you are feeding them enough. 

• Hay testing and calorie planning. Horses need to eat 1.5-3% of their body weight in forage per day. 

How Slow Feed Hay Nets Help Prevent Colic in Horses

Slow feed hay nets help prevent colic in horses by keeping hay in front of them for longer periods of time. Additionally, slow feed nets help keep the digestive tract moving steadily instead of in stop and go cycles. Think about the difference between nibbling all day versus eating one big meal fast and then going empty for hours. 

Slow feeder nets can help reduce colic by:

• Stomach buffering. Hay lasts longer, so digestive system does not slow down.

• Less panic eating. Horses that think hay is scarce tend to over eat. Constant access to hay can help reduce overeating and the stress that comes with it.

• Consistent chewing. More chew time means more saliva production which supports the stomach and reduces acid build up that can cause colic and ulcers. 

• More consistent manure. When hydration and forage flow improve, manure often stays softer and more regular.

What are the Signs of Colic

Even with great management, colic can still happen. Call your vet right away if you notice

• Repeated pawing, flank watching, or belly kicking

• Rolling or trying to lie down again and again

• No manure or manure that is very small and dry

• Loss of appetite

• Sweating, rapid breathing, or unusual depression

Key Takeaways

• Slow feed hay nets help prevent colic in horses by supporting steady forage intake.

• Winter raises the risk due to lower water intake and drier forage.

• Clean,  warm water, constant access to forage, and consistent barn routines can naturally reduce risk. 

• Reducing meal time stress and regular exercise help keep horses calmer and the gut moving.

Our slow feeder nets can be especially handy in winter because they help you stretch hay and provide constant access to forage. They support a consistent feeding routine while eliminating hay waste in stalls, pens, and paddocks.