Livestock Breeding & Gestation Guides
Plain-language guides to gestation lengths, breed differences, and heat-watch dates. Each guide links to its sources and explains how to use the estimates in your farm records.
Cow Gestation Period
Breed averages, modern Angus data, and practical calving windows.
Open cow gestation periodGoat Gestation Period
Kidding dates, the late-pregnancy milestone, and heat-watch timing.
Open goat gestation periodHorse Gestation Period
Why mare due dates vary and how to read the foaling window.
Open horse gestation periodSheep Gestation Period
Breed differences, ram-in dates, and a useful lambing-season window.
Open sheep gestation periodPig Gestation Period
The farrowing estimate, the memory aid, and return-to-heat records.
Open pig gestation periodLivestock Heat Cycles
Species cycle lengths and what a missed return to heat can tell you.
Open livestock heat cycles