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Use our Swine Gestation Calculator to determine your sow’s farrowing date accurately. Plan ahead for a healthy litter with this easy-to-use pregnancy tracker.
Ever found yourself staring at a calendar, wondering, “When is my sow going to give birth?” If you’ve been in the pig farming world for a while, you know that timing is everything. One miscalculation and suddenly bam! you’re caught off guard with a surprise litter at 3 AM.
That’s why we built the Swine Gestation Calculator so you don’t have to do the math or second-guess when piglets are on the way. Just enter the breeding date, and voilà! You’ll get the expected farrowing date instantly. No more counting on your fingers. No more scrambling at the last minute.
Pigs follow a 114-day pregnancy cycle that’s 3 months, 3 weeks, and 3 days. Simple enough, right? Well, not always. Sows can give birth a few days earlier or later, which means you’ve got a small window of unpredictability.
Here’s how it usually plays out:
First 38 days: The sow’s body confirms pregnancy. Early signs? She’ll start eating more and might even get moodier (yeah, pig moms get cranky too).
Day 39-76: The piglets develop inside. You won’t see much, but inside, it’s serious business bones, muscles, and organs start forming.
Day 77-114: This is where things speed up. The sow’s belly gets big, her appetite goes wild, and around Day 107, you better start watching for labor signs.
So, knowing when she’s due isn’t just handy it’s crucial for a smooth delivery.
No complicated steps, no confusing numbers. Here’s how it works:
Not only that, but the calculator also shows pregnancy milestones, so you’ll always know what’s happening inside that growing belly.
We’re not reinventing the wheel here it’s simple math:
Farrowing Date = Breeding Date + 114 Days
Let’s say your sow was bred on January 1, 2024.
Of course, nature doesn’t run on exact dates, so keep an eye out a few days before and after just in case.
| Stage | Days from Breeding | Expected Date (Example: Jan 1, 2024) |
|---|---|---|
| First Trimester Ends | 38 Days | February 8, 2024 |
| Second Trimester Ends | 76 Days | March 17, 2024 |
| Start Watching for Labor | 107 Days | April 17, 2024 |
| Expected Farrowing Date | 114 Days | April 24, 2024 |
| Possible Farrowing Window | 111 - 117 Days | April 21 - April 27, 2024 |
Think of it like a pregnancy countdown, except instead of baby showers, you’re prepping heat lamps and fresh bedding.
Knowing when your sow will give birth isn’t just for convenience it’s a game-changer for farm management.
It’s all about staying ahead because when you’re ahead, you win.
Raising pigs can be unpredictable, but farrowing dates don’t have to be. The Swine Gestation Calculator takes the stress out of pig pregnancy, giving you the info you need in seconds.
Pretty accurate! But keep in mind, sows can farrow a few days early or late. Always be prepared.
Yep! Some sows deliver between 111 and 117 days, so always start watching around Day 107.
If she hasn’t farrowed by Day 118, get a vet involved something might be wrong.
Most sows give birth to 8-14 piglets, but some can have more.
Yes! The 114-day cycle applies to most pig breeds.