The most outstanding feature of the Texel breed, however, is its remarkable muscle development and leanness. Research results from Clay Center and the University of Wisconsin indicate that Texel-sired lambs typically have a 6-10% advantage in loin-eye area when compared to American black-face-sired lambs. (In fact, many Texel breeders routinely scan loin-eyes as a selection tool and are finding 4+ square inches to be quite common with 5 square inch eyes appearing fairly often.) Texel-sired lambs also show an advantage of one full leg score in these comparisons and less total carcass fat-especially seam fat. This is significant in that seam fat is much harder to trim manually during fabrication than are subcutaneous and internal fat deposits. Curiously, even though Texel lambs in these trials grew slightly slower than the black-faced lambs, their feed efficiency was better. In a trial comparing Texel ram lambs to black-faced ram lambs, the Texels required about 15# less feed to produce 60# of gain.