The Polypay was developed at the Experimental Station in Dubois, Idaho beginning in the late 1960s. Researchers drew from four breeds: Finnsheep, Rambouillet, Targhee and Dorset, to produce a prolific sheep that would lamb out of season and produce a fast growing lamb and high-yielding carcass. The breed was fixed in 1975 and has since spread to farms across the U.S., Canada and Mexico.

Polypay lambs are good feeders and grow quickly and steadily to 36 kg. They are docile, easily managed and thrive in pasture, rotational grazing and confinement systems.

Body weight: Rams: 90 - 125 Kg Ewes: 60 - 90 Kg
Fleece: Fine, pronounced crimp