Purpose
Fine wool, range production, and crossbreeding for lamb
Sheep breed ยท France
Rambouillet Sheep
The Rambouillet is a large, fine-wool sheep developed in France from Spanish Merino stock and widely used on Western US range. It is a dual-purpose breed valued for fine fleece, range adaptability, and use in commercial lamb crossbreeding.
Mature size/weight
Rams: about 250 to 300 pounds; ewes: about 150 to 200 pounds
Origin
Rambouillet, France, from Spanish Merino foundation stock
Temperament
Strongly flocking and range-adapted
Rambouillet Sheep characteristics
| Purpose | Fine wool, range production, and crossbreeding for lamb |
|---|---|
| Mature size/weight | Rams: about 250 to 300 pounds; ewes: about 150 to 200 pounds |
| Origin | Rambouillet, France, from Spanish Merino foundation stock |
| Temperament | Strongly flocking and range-adapted |
| Color/appearance | Usually white-faced and white-wooled; rams may be horned or polled, while ewes are generally polled |
| Defining trait | Large-framed fine-wool sheep with dense fleece |
| Fleece | Fine wool, commonly about 18.5 to 24.5 microns, with a 2- to 4-inch staple |
What Rambouillet sheep are raised for
Rambouillets are especially well suited to extensive pasture and range systems, including variable forage and long travel to feed. Their flocking instinct is useful where sheep must move as a group across larger acreage.
For homesteads, they offer meaningful fine-wool production and can provide a foundation for lamb production, but their size and annual wool clip require infrastructure for shearing, handling, and marketing or using the fleece. Select stock adapted to your local climate and production system.
Why the Rambouillet stands out
The Rambouillet is the principal fine-wool range breed in the United States. Its large frame, fine fleece, and ability to work in diverse forage conditions explain its enduring role in Western sheep production.
Raising Rambouillet sheep
Plan annual shearing well before hot weather and maintain a handling system that works safely for a 250- to 300-pound ram. Use predator protection, sound perimeter fencing, and grazing plans that prevent pasture damage; for local nutrition, parasite, and flock-health decisions, work with a licensed veterinarian or Extension educator.
Rambouillet Sheep frequently asked questions
Is Rambouillet wool fine?
Yes. Rambouillet is a fine-wool breed; mature fleece is commonly reported at about 18.5 to 24.5 microns.
Are Rambouillets suited to range conditions?
Yes. They are widely used in Western US range systems and are known for flocking and travel across varied forage conditions.
Do Rambouillet rams have horns?
Rams may be horned or polled. Ewes are generally polled.
Breed characteristics are general guidance and vary by bloodline, region, and management. For animal health, vaccination, and disease questions, consult a licensed veterinarian or your local Cooperative Extension office. Page updated Aug 4, 2026.