Cedrych Galin Grier
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$3,700
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Goat Gestation Calculator
Goat pregnancy averages 150 days. Enter a date to estimate kidding.
Goat gestation at a glance
| Average used by this calculator | 150 days (about 4.9 months) |
|---|---|
| Window shown by this calculator | 145 to 155 days after breeding |
| Due date formula | Breeding date + 150 days |
| Birth is called | Kidding |
| Early labor signs | Isolation and nesting |
| Young | Kids |
Gestation length by breed
| Breed | Type | Days used by this calculator | Versus 150 days |
|---|---|---|---|
| Nigerian Dwarf | Miniature | 145 | -5 |
| Pygmy | Miniature | 150 | Same |
| Mini Nubian | Miniature | 150 | Same |
| Mini LaMancha | Miniature | 150 | Same |
| Boer | Standard | 150 | Same |
Nigerian Dwarf follows the American Goat Society miniature preset (145 days; the Nigerian Dairy Goat Association gives 145 to 153). The Pygmy, Boer and miniature dairy registries use 150. Litter size and doe age shift kidding by a few days.
Merck describes 145 to 155 days for goats generally; selecting Nigerian Dwarf changes this calculator's planning window to 145 to 153 days. Neither display promises a birth day.
Signs kidding is near
Watch for changes in the doe rather than relying on one sign.
- Udder develops
- Doe isolates herself
- More vocalization
- Nesting
- Vulvar discharge
- Loss of appetite
- Soft short calls
- Pawing to make a nest
- Arching the back during contractions
- Repeated lying down and getting up
Goat pregnancy timeline
| From day 20 | Transrectal ultrasound can diagnose pregnancy. |
|---|---|
| From day 25 | A blood pregnancy test can reliably detect pregnancy. |
| From day 30 | Transabdominal ultrasound can detect pregnancy, but Merck says it is most accurate after day 45. |
| Days 55 to 70 | A skilled ultrasonographer may determine fetal sex. |
Frequently asked questions
How long is a goat pregnant?
The goat calculator uses 150 days after breeding and a 145 to 155 day planning window for goats generally; with Nigerian Dwarf selected it uses 145 days and shows 145 to 153 days.
How do I calculate a goat kidding date?
Enter the breeding date and the goat calculator adds 150 days for the estimated kidding date, or 145 days with Nigerian Dwarf selected, then displays the matching planning window.
What signs show kidding is near?
A doe may develop her udder, isolate herself, vocalize, nest or show vulvar discharge as kidding approaches.
When should I call a veterinarian during kidding?
Merck says a doe with 30 minutes of active labor and no progress is likely to need assistance; call a veterinarian for help.
Do Nigerian Dwarf goats have a shorter pregnancy?
The American Goat Society gives 145 days for miniature breeds versus 150 for standard breeds. The Nigerian Dwarf option uses that miniature-breed planning figure, not a measured Nigerian Dwarf breed mean. Choose your breed under Advanced to use its figure.
Sources
- Merck Veterinary Manual: Pregnancy in Goats
- Merck Veterinary Manual: Breeding and Parturition of Goats
- NC State Extension: Lambing and Kidding Cheat Sheet
- Merck Veterinary Manual: Pregnancy Determination in Goats
- Merck Veterinary Manual: Parturition in Goats
- American Goat Society: Gestation Calculator
- Nigerian Dairy Goat Association: Nigerian Dwarf Goats Brochure
- National Pygmy Goat Association: Gestation Calculator
- American Boer Goat Association: Gestation Calculator
- Miniature Dairy Goat Association: Gestation Calculator
Reviewed by Elliott Garber, DVM · Last reviewed
