Swine Gestation Calculator
Calculate the expected gestation timeline and farrowing due date for pigs and sows.
Pregnancy Parameters
Enter the start date of gestation.
Estimated Farrowing Date
KEY MILESTONES
Expert Tip
Gestation in swine is traditionally calculated using the rule of thumb: 3 months, 3 weeks, and 3 days (114 days). Keep temperature in the farrowing house between 65-75°F (18-24°C).
Calculation Methodology & Details
Gestation Formula
Swine pregnancy calculation is based on the 114-day gestation standard (range: 111-117 days). Pregnancy starts at mating.
Clinical Considerations
Gestation durations can vary based on animal breed, age, litter size, and genetic factors. If you observe signs of distress or if delivery departs significantly from the calculated date, consult a veterinarian immediately.
How to Calculate Pig Due Date: Step-by-Step
Calculate the farrowing window with these steps:
Note breeding date
Note the exact day the sow was bred naturally or artificially inseminated.
Apply the Rule
Add 3 months, 3 weeks, and 3 days (114 days total) to find the due date.
Prepare crates
Transfer the sow to her farrowing crate at day 110.
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