Measured on real cows: +10% milk, and beyond. Floor first.
Ten years. Six commercial dairies. Matched test-and-control cows. The number we lead with is the conservative floor — the least it did — with real headroom above it. We show you the milk we measured, and we tell you plainly what we don't claim.
The milk we can prove — floor first, ceiling shown.
Only the test–control milk difference is claimed — led with the conservative +10% floor, the +16% ceiling shown above it.
Why we lead with the floor
Across ten years the uplift ranged up to +16%. We build the whole case on the +10% floor — the least it did — so the number you plan around is the conservative one, not the best day.We claim the milk. We show you the rest as what the biology predicts.
The milk difference above is measured directly — matched test and control cows, same farms, same rations, same operators. That is the one number we put our name to.
The wider gains — condition held, fewer cows tipped into disease, back in calf sooner, fewer early culls — follow the same biology laid out on the Biology and Cost pages. They are associated outcomes of higher intake, not separately measured in these trials. So we lead with the milk, and we let the biology speak for the rest — clearly labelled, never overstated.
Real barns, matched cows, ten years running.
Not a lab result. The milk difference was measured on working commercial dairies — the same cows split device and no-device — and repeated across a decade.
Stated plainly: this is a commercial-trial programme, not yet peer-reviewed. The next step is an independent UK farm trial — which is exactly what a free trial sets up.
The cow you cull never shows you what she had.
A hard transition doesn't only cost this lactation. For the cows that don't recover — or don't get back in calf — it ends a career before her genetics ever pay out. You bred her, reared her and waited two years for her; a rough three weeks can close the account before she opens it. Every fresh cow carried through the window is a cow that gets to express what you selected her for. The milk uplift is what we measure. The cows still in the herd to make it are the rest of the story.
See the floor hold on your own cows.
A zero-cost, on-farm trial for herds of 500+ with individual milk recording or AMS.