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Alpaca Gestation Calculator

This alpaca calculator uses 345 days as its pregnancy average and shows a planning window after mating. Enter the mating date below.

Estimation Method

Alpaca gestation at a glance

Average used by this calculator345 days (about 11.3 months)
Window shown by this calculator335 to 350 days after breeding
Due date formulaBreeding date + 345 days
NewbornCria
TwinsLive twin births are extremely uncommon

Merck says camelids have few reliable signs of pending delivery, so use the date to plan observations rather than predict an exact birth time.

Alpaca pregnancy timeline

After matingMating triggers ovulation about 24 to 30 hours later.
After day 15Rejection of the male at reintroduction can indicate pregnancy.
After day 21A progesterone test may help confirm pregnancy.
Around day 28Transrectal ultrasound can diagnose pregnancy.

Frequently asked questions

How long is an alpaca pregnant?

The alpaca calculator uses 345 days after mating and displays a planning window, while the birth date can vary among camelids.

How do I calculate an alpaca cria due date?

Enter the mating date and the alpaca calculator adds 345 days to estimate the cria due date and its planning window.

Can signs predict an alpaca birth day?

Merck says camelids have few reliable indications of pending delivery, so body changes do not give an exact birth day.

When should I call a veterinarian during alpaca birth?

A camelid dystocia review in the AABP Proceedings says dystocia should be suspected if first-stage labor lasts more than six hours, or if there is no normal progress within 10 minutes after the amniotic sac ruptures; call your veterinarian.

Sources

Reviewed by Elliott Garber, DVM · Last reviewed