Breed Origin & History

Breed Origin

The development of the breed began in the late 1950’s with the importation of a small number of haired sheep from the Caribbean by Michael Piel of Maine. The Piel Farm had several thousand sheep at the time and Piel felt that “progress in selection for traits important to the production of meat would be greatly enhanced by the elimination of wool as a major factor for selection.” His goal was to combine the hair coat, prolificacy, and hardiness of the Virgin Island sheep with the meat conformation and rate of growth of wool breeds. He began to experiment with crosses between the hair sheep and various British breeds, especially Suffolk. After almost 20 years of crossing the resulting hybrids “in every conceivable combination” and selecting the individuals with the desired combination of traits, Piel eventually collected a flock of ewes he called KATAHDINS, named after Mt. Katahdin in Maine. During the mid 1970’s the Wiltshire Horn, a shedding breed from England, was incorporated into the flock to add size and improve carcass quality.

From this original flock, new breeders have been able to expand the number of Katahdin sheep in North America and many other countries, and select carefully for hair coat, carcass quality, and reproductive efficiency. In 1986, a breeders organization, Katahdin Hair Sheep International (KHSI) was formed. Its purposes are to:

  • Register individual Katahdins and record performance
  • Assist in promotion and marketing
  • Encourage research and development related to the breed.

There are provisions for producers to follow an upgrading program to develop a purebred Katahdin flock by recording each cross with KHSI.

Katahdin sheep display many desirable economic traits. In order to scientifically document and test these traits, Katahdin breeders have been involved in several experimental trials.

Studies of internal parasite tolerance in Arkansas indicate that Katahdin sheep possess a significantly higher degree of parasite resistance than wool sheep that they were compared to. Heat tolerance trials demonstrated a similar relationship. Other traits being studied at research institutions include out-of-season breeding, prolificacy and fertility factors, carcass quality and meat flavor, and growth performance.

Breed History

Katahdin sheep are a breed of hair sheep developed in the United States, a small but growing element of the sheep industry in North America. There are 100 million hair sheep around the world—10% of the world’s sheep population—of which 90% are in Africa and 10% are in Latin America and the Caribbean.

The Katahdin breed originated at the Piel Farm in north central Maine where Michael Piel was an innovator and “amateur geneticist” who enjoyed raising livestock. His first intentions related to establishing a sheep enterprise were to use sheep to graze power lines instead of spraying or mowing the vegetation. He then developed other ideas on how to employ sheep for land management.

Barbara Piel wrote:

“From the time Michael was in high school and had a small flock of Suffolks, he was fascinated by sheep, their history and management. When he moved to Maine after World War II, he raised Corriedales and Columbias, but the market for wool set him thinking about a meat sheep that wouldn’t need shearing. If the grower wanted to concentrate on the lamb market, he had no choice but to grow wool as well; so he began research and correspondence to firm up his ideas on how to produce a meat sheep.”

In 1956 and 1957, Piel began making inquiries about hair sheep after seeing pictures in a National Geographic magazine of West African hair sheep. He eventually made contact with Richard Bond of the U.S. Agricultural Research Service in St. Croix, Virgin Islands who was working with hair sheep flocks on the island.

Piel imported “African Hair Sheep,” as they were called then, to Maine from St. Croix in November 1957. All were less than a year of age, born triplets, unrelated for many generations, and wool-less with wool-less siblings. One female was tan in color, the others were white. The ram lamb, “King Tut,” was used for breeding a handful of ewes in December 1957, including Tunis, Southdown, Hampshire, Suffolk, and the “African” ewe lambs. From this point on, crosses of many breed combinations (including Cheviots and other “Down” breeds), were made as Piel tried to determine what would create the type of ewe he was looking for. He was particularly selecting for hair coat, meat-type conformation, high fertility, and flocking instinct.

Excerpts from a Piel letter dated December 28, 1965:

“This season I kept about 120 part-African ewe lambs, so I now have at least 200 part-African ewes. I bred quite a few of them to my old, original African ram, “King Tut” in order to get a bunch of 3/4-breds. I bred another big bunch to another yearling ram which I had selected because of improved conformation as well as relative wool-less ness. This ram was part-African and part-Suffolk. The rest were bred to miscellaneous part-African ram lambs in hopes that the law of chance would shake up the genes a little bit. I noticed this fall that I now have three or four part-African ewes that are quite a lot better than average. One is almost pure hair, with just a patch of wool on top of the shoulders and a little bit on the gaskin area. Her conformation is really quite good, I think. It is my hope that I will soon get enough of such outstanding individuals to be able to start a “family” to select from. Then I can cull back the flock drastically and start from scratch.”

In 1963, a pure African Hair ram lamb was provided to John Glenn at Louisiana State University to use in crossbreeding trials with “Louisiana Natives,” a local landrace type of wool sheep that was extremely hardy and adapted to the hot, humid climate. Dr. Glenn saw a great deal of potential in the crosses and offered a ¼-blood Native ram to Piel to reduce inbreeding pressure (though this did not materialize). However, the promising crossbreeding program was dropped abruptly in 1967 when Glenn left LSU, and his supervisor was more inclined to use Suffolks to improve carcass quality.

John Glenn wrote to Michael Piel January 17, 1966:

“We have never had any difficulty with low fertility from the African Hair rams or the crossbred ewes when breeding in April and May, or in fact, in any of the seasons. Almost all of our African Hair-cross ewes bred at the first period in April and produced lambs in September and October. I feel that this possibility of producing lambs throughout the year, as well as providing sheep that would not have to be sheared, which many of our producers consider a disadvantage since shearers are very difficult to obtain here, might encourage some of the local livestock men to obtain a flock of sheep along with their beef cattle operation. In fact, I often think that this is the only possibility of establishing a sheep industry in Louisiana within the near future at least.”

Michael Piel wrote back in January 22, 1966:

“It occurs to me that it would not be completely out of the question for an Agricultural College such as yours to obtain a financial grant from some such outfit as the DuPont people to pursue the development of a wool-less breed of sheep. After all, they are largely responsible for ruining the wool business, and it would only be to their advantage (for public relations) to demonstrate that sheep production could be profitable without wool production.”

In the early 1970s, Piel felt he had come close to his goal of a “meat sheep that did not require shearing.” He selected from his large flock approximately 120 of the best ewes and called them “Katahdin” sheep after Mt. Katahdin, the highest peak in the state of Maine.

In October 1975, Piel imported a handful of Wiltshire Horn sheep from Wales via Canada. He intended to improve size and bone by incorporating the Wiltshire into the Katahdins. The first crosses were born in 1976.

Paul and Margaret Jepson of Vermont had become acquainted with Piel while trying to locate Wiltshire Horn stock and decided the newly developed Katahdins would suit them better. They purchased some sheep from Piel in the mid-1970s and established the first satellite flock of Katahdins. The Jepson’s then experimented with incorporating St. Croix blood (another hair sheep breed akin to the original “African Hair” type) into their flock in the early 1980s.

Michael Piel died suddenly of a heart attack in December of 1976. The Wiltshire Horn influence in the Piel Farm flock increased in the late 1970s as scale and bone improved somewhat. However, the undesirable presence of horns, decreased prolificacy and flocking instinct, and a flightier disposition resulted from incorporating the Wiltshire Horn. During the early 1980s, under the leadership of Barbara Piel and farm manager Charles Brown, flock selection was against horns, thus diminishing the Wiltshire genetic influence on the Katahdin breed and strengthening maternal traits once again.

Heifer Project International, an international livestock development charity, took an interest in Piel’s work and his “improved” hair sheep. Piel accompanied an HPI-sponsored shipment of his sheep to Guatemala in February 1976 and was caught in a devastating earthquake there just after the plane landed—a very stressful experience for him! HPI realized that Katahdins were well-suited to the southern U.S. and built a sizeable flock at their center in Arkansas through the 1980s based on stock from Piel Farm and Jepson’s.

Katahdin Hair Sheep International was incorporated in 1985 as a breeders’ association and registry by Piel Farm, Heifer Project, and Donald Williams. The first inspection of animals for the original registry flock book was conducted in 1986 by Stan Musgrave, an animal scientist from Maine familiar with the Piel flock. The first KHSI members were accepted in 1987, and twenty-three breeders agreed to join KHSI and register their Katahdin stock.

Interest and enthusiasm for the breed has developed steadily since those early days. Over 35 years later, at the end of 2020, KHSI has registered and recorded nearly173,000 animals and has a current membership of 1500 paid members throughout North America. Since 2001, KHSI has been in the top 6 registries in the USA in terms of number of animals registered per year. Mandatory inspection of registered Katahdins continued through 1998, strengthening predictability of hair coat and standard of type. Commercial flocks of Katahdin and Katahdin cross ewes have become more popular for efficient, low input meat lamb production. Hundreds of Katahdins have been exported to Central and South America, the Caribbean, Southeast Asia and the United Kingdom. The Katahdin breed has proven to be adaptable, easy to manage and efficient—no wonder it is a “breed whose time has come.”

KHSI Honorary Members

These members were officially honored for their significant contribution to the founding of the Katahdin breed, by awarding them with lifetime membership status.

  • Charles Brown, Piel Farm, Abbot, ME
  • Dr. Charles Parker, Columbus, OH
  • Laura Fortmeyer, Jubilee Farm, Fairview, KS
  • Dr. James Morgan, Fayetteville, Arkansas
  • Teresa Maurer, Fayetteville, Arkansas
  • Dr. Jim Miller, Louisiana
  • Dr. Ann Zajac, Virginia
  • Dr. Dave Notter, Virginia
  • Mark Dennis, Louisiana

Breed Standards

KHSI Guide to Katahdin Hair Sheep 2020

The Katahdin breed is a wool-less, easy care, meat type sheep, naturally tolerant of climatic extremes and capable of high performance in a wide variety of environments. The purpose of the breed is to efficiently produce meat.

The covering of the Katahdin does not require shearing and is preferably completely free of permanent wooly fibers. The coat can be any color or pattern. Polled animals are preferred; horned and scurred individuals are recorded as such.

Katahdins are a heavy-muscled, medium-sized breed. They demonstrate adaptability by performing well in areas varying in geography, temperature, and humidity, feed and forage resources, and management systems. Ewes are easy lambers, and exhibit strong maternal instincts and good milking ability. They possess high potential for early puberty, fertility, and lamb survivability.

Lambs grow and mature rapidly to an acceptable market weight range and produce relatively lean and well muscled carcasses with a very mild flavor.

General Appearance: A medium-sized sheep with a hair coat and an alert appearance; head erect and legs squarely placed. Rams are distinctly masculine and well-muscled; ewes strong and feminine.

Head: Variety in facial characteristics is expected. Polled-ness is preferred, but horns and scurs are acceptable. Eyes are wide set, and ear carriage is horizontal. Lower teeth meet the dental pad evenly.

Neck: Strong, of medium length: extends straight into the shoulder. A ram’s neck may be covered by a mane of hair.

Shoulders: Blend smoothly into the neck and back; shoulder blades have good width between and are level with or slightly higher than the back. Well-developed upper arm muscle in rams.

Chest: Wide and deep enough to provide ample room for good heart and lung capacity. Slightly less width than hindquarters in females.

Back: Strong, smooth, and broad; loin long, wide, deep and well-fleshed.

Ribs: Well sprung, wide and deep.

Abdomen: Large capacity for consuming forage and carrying lambs (bottom or side line should not necessarily be straight).

Rump: Wide and well fleshed; rounded appearance; deep in twist.

Tail: Length is variable; preferably undocked, except for market lambs.

Legs: Medium length and bone in proportion to size. Sound leg structure: properly angled at hock, front legs straight, strong pasterns, straight feet free of defect. Muscles of the thigh are thick, with obvious muscularity on the inner and outer thigh, carried down to the shank.

Scrotum, Udder: Two large, well-developed and balanced testicles in rams. Two teats on well-developed, well-balanced udder with good attachment in ewes. Organs free of obvious functional defect or disease.

Hair Coat: No discrimination is made as to color on any part of the body. The coat shall preferably consist of hair rather than wooly fibers, though hair texture will vary. (Refer to the Animal Inspection section of the General Instructions for a description of coat types.)


  • Over-or undershot jaw
  • Very light bone structure
  • Weak shoulders or back
  • Cow- or sickle-hocked legs
  • Weak pasterns or splayed hoofs
  • Cryptorchidism or monorchidism
  • Extremely small testicles
  • Missing or malformed teats

Sheep Links


Premier1Supplies.com – sheep supplies

Zareba – sheep supplies

Gene Check – DNA testing

Ovine Progressive Pneumonia

OPP Concerned Sheep Breeders Association

USDA APHIS – Scrapie Certification Program

American Sheep Industry

National Sheep Improvement Program


Maryland Small Ruminants – Excellent Source of Information for Sheep Producers

National Center for Appropriate Technology – publications, information and resources for agricultural practices that promote sustainable & organic Agriculture and decrease dependence on chemicals

American Consortium for Small Ruminant Parasite Control – Internal parasite control in sheep and goats.  Use of FAMACHA

Sheep & Goat Marketing Information – University of Maryland & Cornell University.

Purdue University Sheep Links – sheep links of interests

Ohio State University Sheep Links – sheep links of interests


Maryland Small Ruminants – composting animals


The Stockman Grass Farmer


Michael Piel’s article from the 1966 “The Shepherd” Magazine

Over View of Research On Katahdins in 2001 – Article published in The Shepherd, August 2001. 46(8): 34-39.

Parasite Resistance Work at Virginia Polytechnic Institute and State University