The Home Almanac

Vol. I, MMXXVIThe Canadian home, in season655 stations, every province and territory

Livestock Gestation Calculator

Pick the species and breeding date to estimate the due date and the early-to-late watch window.

Planning estimate only. Individual animals vary by breed, age, twins, and health. Consult a veterinarian for breeding management.

Species
Adjust gestation length

How the date is calculated

The expected due date is the breeding date plus the species default gestation length. The watch window uses the source range for that species, so cattle use 279 to 290 days, goats use 147 to 153 days, and rabbits use 28 to 35 days.

Sources

Gestation defaults and ranges: Merck Veterinary Manual, NMSU Extension livestock record guidance, OMAFRA Publication 61, and Penn State Extension rabbit production.

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