Lameness is expensive precisely because it's caught late. By the time a cow is obviously limping, she's already lost milk, body condition, and probably a fertility cycle, and the lesion is harder to cure. The skill that saves money is spotting the *early* signs — the subtle changes before the limp.
Mobility scoring — the early-warning tool Score how cows walk on a simple scale: - 0 — Sound: flat back, even, confident strides, weight evenly on all feet. - 1 — Imperfect: an uneven rhythm or slightly shortened stride; she may be favouring a foot. **This is the one to catch.** A cow at score 1 often fixes with one prompt trim. - 2 — Lame: an obvious limp, shortened stride, head bob, an arched back when walking. - 3 — Severely lame: reluctant to bear weight, very slow, may not keep up with the herd.
Score the herd as they walk a flat, non-slip surface — coming out of the parlour is ideal. Doing it every couple of weeks turns lameness from a crisis into a routine catch.
The subtle early signs (score 1) - An arched back while walking that flattens when she stands still — one of the earliest tells. - Shortened steps or an uneven, "off" rhythm. - Favouring one foot — a half-second less weight on it each stride. - Slower than her herdmates to and from the parlour, or hanging at the back of the group. - Standing on the edge of a cubicle or half-in, reluctant to put a foot down fully. - Reduced feeding-time at the bunk because standing hurts.
Behaviour changes that hint at sore feet - Lying down more than usual (or, paradoxically, less, if the cubicle is uncomfortable). - A quiet drop in milk or condition with no other explanation — always check feet. - Reluctance to turn sharply or walk on hard/wet ground.
Why early beats late, every time A score-1 cow caught and trimmed promptly is usually sound within days at minimal cost. The same cow left until she's score 3 may have a deep sole ulcer, take weeks to heal, lose a fertility cycle, and risk becoming a chronic, cull-worthy case. The entire economic argument for mobility scoring is "catch it at 1."
What to do when you spot it Examine and trim the foot (or have your trimmer do it), identify the lesion (sole ulcer, white-line, digital dermatitis, foot rot — each needs a different response), and record it. Then ask the herd question: if several cows are going lame, the cause is environmental (wet, abrasive, or uncomfortable), not bad luck.
Sources AHDB Dairy — Mobility Scoring & Healthy Feet. University of Nottingham — Dairy Herd Lameness. Zinpro — Locomotion Scoring.