The Blackhead Persian is a fat-rumped hair breed from the arid lands of the Middle East. Some exotic diseases also cause skin irritation to sheep. Before treating for lice, confirm that they are present and ensure that other possible causes of rubbing have been ruled out. The Dorper originated in South Africa from crosses between the Dorset and the Blackhead Persian. I did not appreciate the stumpy 'lil legs on the second crosses. Uses. The Dorper and the Katahdin were derived from very different types of hair sheep. Many factors are driving the increase in hair sheep numbers, including lack of profitability in the wool sector, lack of sheep shearers, widespread development of anthelmintic-resistant worms, and the overall desire (need) for easy-care sheep. At Stoneheart Farms we specialize in Katahdin x Dorper crosses for exceptional market lambs and for replacement breeding stock. It is now farmed in other areas as well, and is the second most common sheep breed in South Africa. The cross breeding results in the best of both breeds but also in the benefits of heterosis, commonly known as hybrid vigor.C rossbred individuals tend to be more vigorous, more fertile and grow faster than purebreds. Dorper sheep originated in South Africa and were the result of crossing Dorset Horn with Blackheaded Persian sheep. Introducing the Dorper rams into a strong flock of ewes in a strict breeding program can yield even stronger offspring and better quality meat. I thought the black headed Dorpers had slightly better feet than the whites and that the White Dorpers had a little more leg and frame size. Breeders have introduced Dorper rams into other lines, such as Katahdin sheep and Texel, with good results. The breed was created through the efforts of the South African Department of Agriculture to breed a meat sheep suitable to the more arid regions of the country. Two varieties of Dorper Sheep were created: the black headed Dorper and an all white variety, the White Dorper sheep. Although the breed was created in the 1930s, it is still fairly new to the US. There are also a handful of heritage hair breeds still raised in various corners of the world – including some that look more like a wild mountain goat than a domesticated sheep – some of which are available to farmers in the U.S. Katahdin. We tried Dorper, White Dorper and Katahdin across our Coopworths to breed the wool off them. The characteristics of fast growth, nonseasonal breeding, and mild tasting meat are easily attained by adding the Dorper sheep to a flock. The chemicals registered for lice treatment on sheep can be used on fleece-shedding sheep. Body lice (Bovicola ovis) infestation can occur on fleece-shedding and haired sheep, causing irritation and rubbing. The Dorper and Katahdin hair breeds, both developed in modern times, are now among the most common sheep in America. The top two sheep breeds in terms of breed registrations and transfers are now hair sheep: Dorper and Katahdin. The Dorper is a South African breed of domestic sheep developed by crossing Dorset Horn and the Blackhead Persian sheep. A Katahdin ram.