Prepare supplies
Use the preparation date to check bedding, lambing supplies, clean space and emergency contacts.
Lambing Date Calculator
Estimate lambing dates from breeding or exposure date.
Use this calculator to estimate expected lambing date, preparation timing and close-watch period. It is useful for planning lambing supplies, observation and records.
Calculate lambing date
Enter the breeding or exposure date. The default gestation length is 147 days.
Expected lambing
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Likely window
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Prepare supplies
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Start close watch
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This is a planning estimate. Actual lambing can vary by ewe, breed, nutrition, age and management conditions.
Planning use
Use the date to prepare, not just to predict
A lambing date estimate is most useful when it creates actions: supplies prepared, observation increased, ewe notes reviewed and lambing records ready.
Increase observation
Use the close-watch date to start watching condition, udder change, appetite and behavior more carefully.
Record the outcome
Expected date, actual lambing date, lamb count and notes should stay connected to the ewe record.
Connected records
Lambing plans are stronger when ewe history is visible.
The lambing date is only one part of the story. Ewe age, previous lambing notes, treatment history, body condition and nutrition all affect the risk and management plan.
HerdDeck keeps lambing dates connected to animal cards, health records, pedigree and reports.
- Review the ewe cardCheck previous lambing results, treatments and important notes.
- Prepare the recordHave lamb count, sex, tag and notes ready to record after lambing.
- Compare expected and actualActual lambing dates help improve future planning.
Next step
Move from date estimates to connected lambing records.
HerdDeck Shepherd connects breeding, lambing, animal cards, treatments, pedigree, feed, finance and reports so lambing events become part of the flock history.