Sheep Breeding Guide: Joining, Gestation to Lambing

1. Heat Cycle: Knowing When She Is Ready

Ewes are short-day breeders: they start cycling as days shorten in late summer and keep cycling through winter, about every 17 days. A ewe in heat is restless, seeks out the ram, and shows a slightly swollen vulva with clear mucus. Heat lasts 24 to 36 hours, and most ewes are settled within a day of first standing for the ram. From spring through midsummer most ewes do not cycle at all, which is why joining dates cluster in autumn.

2. Breeding: Joining the Flock

Turn sound rams in with ewes in autumn for a joining of 5 to 6 weeks: one mature ram covers 40 to 50 ewes, a ram lamb no more than 20 to 30. Flush ewes on rising feed for two to three weeks before turnout to lift ovulation and twinning. Write the joining date down the day it happens: every lambing date and management call flows from it.

Tools for this stage: sheep breeding calculator

3. Pregnancy: The 147 Days

Gestation averages 147 days with a normal range of 142 to 152. Ewes need little beyond good forage until the last six weeks, when grain is introduced slowly, especially for ewes carrying twins. Scanning at 60 to 90 days tells singles from twins so you can feed accordingly. Hold ewes at steady condition through mid pregnancy: big swings either way cost you at lambing.

Tools for this stage: sheep gestation calculator · how long sheep are pregnant · signs a sheep is pregnant

4. Lambing Prep: The Last Two Weeks

From about day 133, draft heavy ewes close to the barn and stage the kit: iodine for navels, towels, lubricant, gloves, a stomach tube, and colostrum replacer. Crutch or shear wool around the udder and tailhead so you can see what is happening at delivery. Set up individual lambing pens so new pairs bond without the flock crowding them. Post the vet number on the wall before the first ewe lambs, not during it.

Tools for this stage: sheep lambing calculator · printable lambing kit checklist

5. Lambing: Labor and When to Help

A mature ewe usually delivers within an hour of hard labor; ewe lambs take longer. A lamb presents front feet first with the nose resting on top of them. Glove up and check after 30 minutes of straining with nothing presented, and call the vet if there is still no progress within the hour. Dry each lamb, dip the navel, and have it sucking colostrum inside the first hour.

Tools for this stage: livestock due date calendar

6. Lamb Care and Weaning

Lambs need colostrum in the first hours and then gain fast on the ewe, so watch that each lamb gets its share on day one. Dock and castrate in the first two weeks per your vet's advice. Wean at 8 to 12 weeks once lambs are eating creep feed well and the ewe's milk is drying off. Ewes then rest until the next autumn joining: one lambing a year is the sustainable pace.

Tools for this stage: animal age calculator