20/03/2026
LAMINITIS DOESN'T CARE HOW FIT YOUR HORSE IS
This pony is part Welsh, part Hackney. She's worked regularly and came through winter fit and lean. Two weeks ago there was nothing in her presentation that would have raised a flag. She looked exactly like what she is — a fit, well-managed pony with an attentive owner.
Then spring arrived. And then pottery.
The owner recognised it immediately. Not obvious lameness. The subtle kind — that slight reluctance, that careful placing of feet that most people would write off as a stiff morning. She didn't write it off. She called it.
That decision is probably the reason this pony isn't in serious trouble right now.
Here's what makes this case instructive rather than just unlucky. Welsh ponies carry a documented genetic variant — HMGA2 — associated with metabolic traits including higher basal insulin concentrations and increased predisposition to insulin dysregulation. Research across multiple pony breeds has confirmed this variant’s association with metabolic traits linked to increased laminitis risk. The Hackney contributes similar traits of metabolic efficiency — a breed developed for endurance and economy of output, which in the modern management context translates to a system that responds strongly to carbohydrate load.
Genetics set the threshold. Environment pulls the trigger.
Being fit and lean doesn't switch that off. It manages the risk. It doesn't eliminate it.
Spring grass, actively growing and accumulating non-structural carbohydrates (NSCs — the sugars and starches the plant stores as energy), can drive sustained hyperinsulinaemia sufficient to initiate lamellar pathology in a genetically predisposed animal regardless of how well everything else has been managed.
This is not a story about management failure. This owner did everything right. This is a story about biology and probability — and about what happens when an owner knows their horse well enough to catch the moment before it becomes a crisis.
Movement and diet remain the most important levers in managing laminitis risk. They work. They matter. They just don't provide immunity, and it's worth being clear-eyed about that distinction — particularly in spring, and particularly if your horse carries the genetic profile that makes this kind of response more likely.
If you have a native breed, a native cross, or any pony with that classic thrifty build, this is the time of year to be watching. Not for dramatic lameness. For pottery. For reluctance on a circle. For a horse that just seems quieter about moving than usual.
That's the window. It opens and closes fast.
KEY TAKEAWAYS
– Fit, lean, well-managed horses are not immune. Genetic predisposition runs underneath management.
– Welsh ponies carry a documented genetic variant associated with metabolic traits including higher basal insulin. Native and thrifty builds share similar metabolic efficiency profiles.
– Genetics set the threshold. Environment pulls the trigger.
– Diet and movement are the most effective management tools available — but they reduce risk, they don't eliminate it.
– Early recognition changes outcomes. Pottery and reluctance to move are the signals. Don't wait for obvious lameness.
