09/02/2026
HE ISN'T BORED. HE IS CHEMICALLY IMBALANCED. 🐴🧂
You watch your horse in the paddock. He ignores the hay. He starts licking the mud. He gnaws on the wooden fence rail. You think: "He’s just being destructive/naughty." Stop. He is suffering from Pica (Geophagia). He is trying to mine minerals from the earth because his winter diet has failed him.
The Science of Salt Hunger: 1. The "Hay Trap" (The Na:K Inversion) 🌾 A horse cannot survive on grass/hay alone. UK forage is high in Potassium (K) but contains almost Zero Sodium (Na). The Math: A 500kg horse needs roughly 10-12g of Sodium per day just to keep his heart beating and nerves firing (Maintenance Level). To get that from UK hay, he would have to eat 50kg of it. He physically can't. Without supplementation, every horse on a hay diet is sodium deficient.
2. The Adrenal Panic (Aldosterone) 📉 When blood sodium drops, the horse's Adrenal Glands panic. They secrete a hormone called Aldosterone. This hormone tells the kidneys: "Stop peeing out salt. Save every molecule." It also triggers a primal neurological drive in the brain: "FIND SALT NOW." The horse starts licking objects that might contain salt: soil (minerals), wood (sap), or your sweaty hands. He isn't being rude; he is obeying a hormonal command to save his own life.
3. The "Smooth Tongue" Myth (Why Blocks Fail) 👅 You might say: "But he has a salt lick in his stable!" The Anatomy Issue: Cows have rough, sandpaper tongues. They can lick a rock-hard salt block and get plenty. Horses have smooth tongues. Licking a hard white block is frustrating and inefficient for them. They often give up before they satisfy the craving. If you see teeth marks on the salt block, he is desperate—he is trying to bite chunks off because licking isn't working.
The Verdict: DITCH THE BLOCK. FEED THE SPOON. A salt block is a toy. It is not a nutritional strategy. The Fix: Add 1 tablespoon of Table Salt (Sodium Chloride) or Lo-Salt to his feed bucket every day.
Why? It ensures he gets the full dose immediately.
Result: The mud licking often stops within 3 days. His hydration improves (salt triggers thirst), reducing the risk of winter Impaction Colic.
📌 Quick FAQ
Q: Can I overdose him on salt? A: Very unlikely. 🌊 As long as he has access to fresh Water, a horse is incredibly efficient at peeing out excess sodium. The risk of deficiency is huge; the risk of toxicity is tiny (unless water is withheld).
Q: Why does he chew wood then? A: Lignophagia. 🪵 Wood chewing can be boredom, but it is often linked to a lack of fiber or minerals. If he has plenty of hay but still eats the fence, fix the Salt first. If he stops, it was mineral hunger. If he continues, it's boredom.
Q: What about "Himalayan" salt vs. White salt? A: Marketing. 🏔️ Your horse needs Sodium Chloride (NaCl). Pink salt has "trace minerals" (iron/magnesium), but in such tiny amounts, they are nutritionally irrelevant. White table salt is pure NaCl and does the job perfectly. Don't overpay for the color pink.
