 An estimated 50% of the sheep on the US western ranges are of Rambouillet blood.Rambouillet stud has also had an enormous influence on the development of the Australian Merino industry though "Emperor" and the Peppin Merino stud.The fleece was valuable in the manufacture of cloth, at times being woven in a mixed fabric of cotton warp and wool weft, known as Delaine Merino.