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Highland Cattle Gestation Calculator
Scottish Highland cattle pregnancy uses 280 days in this calculator. Enter the breeding date to estimate the calving date and window.
Highland Cattle gestation at a glance
| Average used by this calculator | 280 days (about 9.2 months) |
|---|---|
| Window shown by this calculator | 275 to 285 days after breeding |
| Due date formula | Breeding date + 280 days |
| Birth is called | Calving |
| Young | Calf |
| Breed note | Society guide: 280 days plus or minus five; first-calf heifers may go over 280 |
Gestation length by breed
| Breed | Type | Days used by this calculator | Versus 280 days |
|---|---|---|---|
| Angus | Beef | 279 | -1 |
| Hereford | Beef | 285 | +5 |
| Charolais | Beef | 286 | +6 |
| Limousin | Beef | 288 | +8 |
| Simmental | Dual-purpose | 284 | +4 |
| Holstein | Dairy | 279 | -1 |
| Jersey | Dairy | 280 | Same |
| Brahman | Beef | 292 | +12 |
| Highland | Beef | 280 | Same |
Breed figures draw on US studies, ICBF, the Highland Cattle Society, and Coffey et al. for Limousin; herd factors can shift timing.
The Highland Cattle Society gives five days either side of 280 as a general guide. It says a first-calf heifer may go over 280 days by as much as a week or a few days more, and advises calling the vet immediately if she goes too long or shows distress or ill health.
Highland cattle pregnancy timeline
| Breeding date | The calculator starts with the entered breeding date. |
|---|---|
| From day 28 after last possible breeding, general cattle | Ultrasound or a blood test may diagnose pregnancy. |
| Around day 40, general cattle | Transrectal palpation can usually diagnose pregnancy. |
| Near calving, general cattle | Udder filling and vulvar swelling may become visible. |
Frequently asked questions
How long are Highland cattle pregnant?
The Highland calculator uses 280 days after breeding. The Society gives five days either side as a general guide and says a first-calf heifer may go over 280 days by as much as a week or a few days more; call your veterinarian immediately if she goes too long or shows distress or ill health.
How do I calculate a Highland cow calving date?
Enter the breeding date and the Highland calculator adds 280 days and displays a 275 to 285 day planning window, which is not a clinical limit.
What signs show a Highland cow is near calving?
As in cattle generally, udder filling and relaxation or swelling of the vulva may signal that calving is approaching.
When should I call a veterinarian during Highland calving?
University of Minnesota general cattle guidance says intervene if a mature cow makes no clear progress for 30 minutes in stage two, a heifer makes no clear progress for 60 minutes in stage two, or stage one exceeds six hours without progress. Call your veterinarian for help.
Sources
- Highland Cattle Society: Handbook of Highland Cattle
- Nebraska Extension: How Long Are Cows Pregnant?
- NDSU Extension: Pregnancy Diagnosis in Beef Cattle
- Nebraska Extension: Signs of Impending Calving
- Minnesota Extension: When to Help a Cow or Heifer Calving
Reviewed by Elliott Garber, DVM · Last reviewed
