Transboundary breed Transboundary breed A transboundary breed is a breed which is present in several countries. Transboundary species of the five significant livestock types (cattle, sheep, goats, pigs and chickens), have been developed for a hundred years or more in intensive manufacturing systems, which has led to global availability. A relatively small number of worldwide transboundary breeds compose the ever-increasing share of total global animal products. However, only in North America and the Southwest Pacific do the number of transboundary breeds surpass that of local breeds. There can be both regional and international types of transboundary breeds. Regional breeds are breeds that
Norfolk Horn but dry environments. The breed is long-legged with black faces and legs. Both sexes have horns, although these are larger in the males. At maturity, an ewe weighs about . The breed is described as "flighty" and is likened to goats in their ability to jump over obstacles such as fencing. It was a popular breed in Norfolk until the middle 19th century, when "improved" breeds such as the Leicester and Southdown appeared. Norfolk Horn ewes were mated to Southdown rams to produce high quality meat-producing lambs, and this cross became established as a separate breed, the Suffolk. The Norfolk