Pig / Sow Farrowing Calculator
Plan sow management tasks, estimate due dates, and track timelines for commercial or small-scale farrowing operations.
Pregnancy Parameters
Enter the start date of gestation.
Estimated Farrowing Due Date
KEY MILESTONES
Expert Tip
A detailed farrowing timeline prevents piglet losses. Record heat check and movement dates precisely to maximize sow efficiency.
Calculation Methodology & Details
Gestation Formula
Farrowing calculations are based on the 114-day gestation standard (range: 111-117 days). Management milestones are offset from the breeding day.
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 Sow Farrowing: Step-by-Step
Calculate the farrowing window and scheduling dates with these steps:
Note breeding date
Note the exact day the sow was bred naturally or artificially inseminated.
Add Gestation Days
Add 114 days to find the expected delivery date.
Schedule management tasks
Plan return heat check at day 21, scan at day 30, and transfer to farrowing crates at day 110.