Expected weight corridor (±10%) for this herd's own baseline, with normal cows tracking inside it and four flagged animals shown against it — 2026-09-05
Feather, Chalky, and River (controls) track the expected corridor normally. Fresian sits below it throughout this window, ~9-11% under expected.
Suspected cause: the gap has been consistent since early in life rather than a recent onset, which points more toward a chronic issue — internal parasites (worm burden) or persistent competition for feed within the herd — rather than a sudden illness. Not confirmed; worth a faecal egg count and a look at her position in the feeding order.
Feather, Chalky, and River (controls) track the expected corridor normally. Tulip is currently 315kg at 27.1 months, ~11% below expected — a genuine concern worth a vet/condition check.
Suspected cause: unlike Fresian, Tulip's shortfall follows a peak and decline rather than a lifelong gap — pointing more toward something that started recently, at around two years old. Dental discomfort during permanent-tooth eruption (common at this age) or a developing parasite burden are the likelier explanations over a chronic issue. Not confirmed; worth a mouth check alongside a worm count.
Chalky (19.1 months) tracks the expected corridor normally at 260kg. Spots (18.7 months, nearly the same age) tracked only modestly above Chalky through month 17 (286kg), then jumped +63kg in a single month to 349kg — far outside her own decelerating growth pattern. Reads as a sensor or recording error more than a real growth spurt.
Suspected data-entry error: extrapolating Spots' own decelerating trend puts her true current weight closer to ~304.9kg — plausibly mis-keyed as 349kg (a dropped tens-place digit). Treat 349kg as unconfirmed until re-weighed.
Twilight sits comfortably inside the mature plateau (~415kg ±10%). Bug held steady there too until peaking at 413kg in Aug 2025, then declined 53kg to 360kg — well below the corridor floor.
Suspected cause: at 8+ years old with a clean peak-then-decline shape, this is the classic profile for dental wear — an older cow losing the ability to graze and chew effectively, rather than sudden illness. Age-related organ decline or a chronic condition are also possible. Not confirmed; worth a dental/mouth exam before assuming it's diet or parasites.
| Animal | Age | Actual | Expected (corridor mean) | Deviation | Read |
|---|---|---|---|---|---|
| Feather | 23.3mo | 360kg | ~331kg | +8.8% | Normal — upper edge of corridor |
| Chalky | 19.1mo | 260kg | ~276kg | −5.6% | Normal |
| River | 36.0mo | 357kg | ~382kg | −6.5% | Normal |
| Twilight | 101.3mo | 434kg | ~415kg | +4.6% | Normal, mature plateau |
| Fresian | 22.9mo | 295kg | ~326kg | −9.5% | Light for age, watch |
| Tulip | 27.1mo | 315kg | ~353kg | −10.8% | Underweight for age — flag for vet check |
| Bug | 99.1mo | 360kg | ~415kg | −13.3% | Was stable, now declining |
| Spots | 18.7mo | 349kg | ~270kg | +29% | Anomalous jump — check sensor |