Why Slow Feeders Are Worth It (And What They're Actually Doing for Your Horse)

If you've ever watched your horse inhale a flake of hay in twenty minutes and then stand around looking bored and vaguely annoyed for the next few hours, you already understand the problem. Horses are designed to eat — slowly, constantly, and on the move. Slow feeders are one of the simplest ways to support that, and the benefits go further than most people realize.

Forage Is the Foundation

Before anything else: forage first, always. Nutritionists and vets are pretty consistent on this one. Horses need 1.5–2% of their body weight in forage every single day, even if they're an easy keeper carrying a little extra. Quality forage is the base of a healthy feeding routine, full stop.

A Horse's Stomach Doesn't Work the Way You Might Think

Here's the thing about a horse's digestive system — it's built for near-constant movement of food through it. The stomach only holds 8–12 litres, and food can pass through in as little as 15 minutes. When it empties out, stomach acid keeps producing anyway, because a horse's stomach produces acid around the clock with no protective lining in the upper portion to buffer it.

That's a problem. An empty, acidic stomach is uncomfortable for the horse, and over time it's one of the leading contributors to gastric ulcers — which affect at least 80% of horses at some point. More time eating means more saliva produced (horses can only produce saliva when there's something in their mouth), and saliva contains bicarbonate that helps neutralize that acid. Slow feeders extend eating time, which gives the stomach a better chance to stay buffered.

The Ripple Effect on the Rest of the Body

Keeping forage moving through the system consistently does more than just protect the stomach. Horses that go long stretches without eating see a rise in cortisol levels. As cortisol climbs, insulin follows — and that leads to fat storage. For easy keepers and horses prone to laminitis, this matters a lot. Keeping cortisol low and steady through consistent forage access is actually one of the tools in managing weight, not just a nice-to-have.

Hanging slow feeders in a few different spots around a paddock or stall also encourages movement, which supports hindgut health and helps reduce the risk of colic.

The Mental Health Side of Things

Forage restriction is stressful. It sounds simple, but it's worth sitting with — a horse that doesn't know when its next meal is coming is a stressed horse, and stress has real physical consequences. Horses are only sleeping for around 4 hours a day. The rest of the time, they want to be chewing. When they can't get to hay, they'll find something else — cribbing, pawing, chewing on wood, general stall behaviour that nobody wants to deal with. Giving them consistent access to forage is one of the most straightforward ways to reduce those vices.

Practical Benefits That Make Your Life Easier

Loose hay on the ground is expensive bedding — and the waste is more significant than most people realize. Research suggests up to 57% of loose hay can be lost to trampling and contamination, compared to as little as 6% with a hay net. That's a meaningful difference in your hay bill over a winter. A slow feeder keeps the hay together and off the ground, which means less waste and easier cleanup.

Placement and Hole Size: Small Decisions That Matter

Where you put the feeder and what size holes you choose both make a difference. Ground-level or low placement is ideal — it lets your horse eat in a natural head-down position, which is better for chewing, saliva production, and long-term neck and shoulder comfort. Elevated hay nets get the job done, but consistent use at an awkward height can add unnecessary strain over time.

For hole size, most horses do well with 1–1.5 inch openings long-term. Horses that tend to eat very quickly may do better starting with something smaller. It's not a bad idea to have a couple of different sizes on hand, since some horses carry weight differently across seasons and may need adjusting.

One more thing on setup: most horses need 4–5 feeding sessions to get comfortable with a slow feeder. If your horse seems frustrated at first, that's normal. Give them time to figure it out before deciding it's not working.

Is a Slow Feeder Right for Every Horse?

For most horses, yes — but it's worth knowing the exceptions. Underweight horses, seniors with dental issues, and horses with higher energy demands may struggle to get enough hay through a slow feeder. If that sounds like your horse, free-choice feeding is likely the better fit.

For everyone else — whether your horse self-regulates or treats every flake like it might be the last one they ever see — slow feeders work. For the self-regulators, the net just keeps hay tidy and accessible. For the horses who would eat themselves into a stupor given the chance, it slows things down to a pace their digestive system can actually handle.

Either way, the goal is the same: keep them eating slowly, keep the gut moving, and keep stress low. It's a pretty good deal for everyone.