This alpaca pregnancy calculator is designed to assist breeders in accurately tracking gestation periods and planning for cria births.
🦙 Alpaca Gestation Calculator
Enter Breeding Date: Select the date when your female alpaca (dam) was bred.
Select Alpaca Breed: Huacaya: The most common breed with fluffy, crimped fiber, Suri: Characterized by silky, dreadlock-like fiber, Hybrid: Cross between Huacaya and Suri.
Select Dam’s Age: Maiden: First-time mothers (typically have longer gestation), Young: 2-3 years old, Mature: 4-10 years old (optimal breeding age), Senior: Over 10 years old.
Select Breeding Season: Spring/Summer/Fall/Winter: Season can slightly affect gestation length.
Understanding the Results
The calculator provides detailed information to assist with breeding management. The Expected Cria Due Date Range includes the earliest possible due date, the most likely due date (prominently highlighted), and the latest possible due date. A visual progress bar displays the current pregnancy stage, along with the number of days remaining until the expected due date.
The Pregnancy Timeline section breaks down key milestones including the conclusion of the first trimester, the end of the second trimester, the beginning of the third trimester, and the birth window—a critical period when breeders should maintain heightened vigilance.
Under Pregnancy Information, you’ll find breed-specific details, the average gestation period for your alpaca, the current stage of pregnancy, and customized care recommendations appropriate for that particular stage.
How It Works
The calculator’s accuracy stems from established averages for alpaca gestation periods, which vary by breed.
Huacaya alpacas typically experience gestation lasting 335-350 days, with an average of 342 days.
Suri alpacas tend to have slightly longer gestation periods of 340-355 days, averaging 345 days.
Hybrid alpacas generally fall between these ranges at 335-352 days, with an average of 343 days.
For Other/Unknown breeds, the calculator uses a broader range of 335-355 days, with an average of 345 days.
The calculator makes adjustments based on:
- Dam’s age (maiden and young dams often have longer gestation periods)
- Breeding season (winter breedings may have slightly longer gestation)
- Individual breed characteristics
This calculator helps alpaca breeders plan more accurately for cria births, track pregnancy progress through all stages, and prepare appropriately for each stage of pregnancy.