history | sheep in America | classifying sheep breeds | comparative analysis of the breeds | major and minor breeds of sheep
Comparative Distinguishing Characteristics of Sheep and Goats:
CHARACTERISTIC | SHEEP | GOATS |
Chromosome number | 54 | 60 |
Domestication | Among first | Among first |
Gregarious nature | Strong to moderate | Weak to moderate |
Most adapted area | Arid temperature to tropical regions | Arid tropics |
World population | 1 billion | 400 million |
Physical characteristic: | ||
Tail length | Born long, generally docked | Short |
Tail carriage | Drooping | Erect |
Interdigital glands | Present | Absent |
Lacrimal pits | Present | Absent |
Beard | Absent | Present |
Protective coat | Wool or hair | Hair |
Fertility of matings: | ||
Buck goat x female | Sterile | Fertile |
Ram x female | Fertile | Fertile (embryo generally dies) |
History: For some 12,000 years sheep and goats were wild animals roaming the countryside. In some parts of the world, this continues today. Eventually, man and the sheep/goats developed a symbiotic relationship – man protected these animals from predators, while the animals provided man with food and clothing. The following list contains the history of the domestication of sheep:
Sheep in America: Sheep were first introduced into what is now the southwest United States in 1519 by Spanish troops under Cortez. The type of sheep that was introduced was called the "churra" or common type of mutton sheep. It was not until the middle of the 19th century that these early churra were mingled with the European/Asian sheep trailed from the east coast of the United States by western immigrants.
George Washington, always keenly interested in the growth of the industry, imported the first broadtail Persian sheep two years before his death. Unfortunately, there is no record of the results of his efforts.
In 1802, Robert R. Livingston, Minister of France, shipped to the United States a flock of Rambouillet sheep from the national farm at Versailles. In the same year, Colonel David Humphreys, retired Minister to Spain, imported a small flock of Merinos. He sold them to neighbors in Derby, Connecticut, where the first Merino breeding farm was established.
In 1808, President Thomas Jefferson urged Washington Irving, then Minister to Spain, to purchase Merino sheep for export to this country. As a result of this request, 4,000 sheep were obtained. In 1811 an additional 25,000 sheep were imported and distributed to sheep raisers throughout the country. This led to the widespread establishment of the Merino strain in the United States. Within a hundred and fifty years the United States became the second largest fine wool-growing area in the world, topped only by Australia.
Classifying Sheep Breeds in the United States and in the World:
Sheep Breed Classification in the United States: In the United States there are over 47 breeds and types of sheep. Various associations register nearly 100,000 ewes and rams annually. Since present importation laws greatly restrict the introduction of new breeds of sheep into the United States, these domestic breeds will continue to be the foundation of the American sheep industry.
Development and improvement of the industry depend upon the selection of the best producing sheep within these breeds, and the proper combining of these breeds in commercial enterprises to develop the most productive sheep and the most desirable lamb and wool products.
Comparative Analysis of the Breeds: Sheep breeds have been bred and developed to fit almost every ecosystem in the world. Generally, breeds can be broken down into four groups: fine wools, long wools, dual purpose (medium wools), and meat type (medium wools) breeds.
Fine Wool Breeds
Important economic traits:
Limitations:
Long Wool Breeds
Important economic traits:
Limitations:
Dual Purpose Breeds (medium wools)
Important economic traits:
Limitations:
Meat Type Breeds (medium wools)
Important economic traits:
Limitations:
Major and Minor Breeds of Sheep and Goats in the World:
SHEEP | GOATS | ||
Major | Minor | Major | Minor |
Corriedale - dual | Cotswold - wool | Angora - fiber | Alpine - dairy |
Dorset - meat | Delaine-Merino - wool | Boer - meat | LaMancha - dairy |
Suffolk - meat | Gulf Coast Native - dual | Cashmere - fiber | Nigerian Dwarf - dairy |
Hampshire - meat | Lincoln - dual | Nubian - dairy | Fainting Goat - meat |
Polypay - dual | Oxford - meat | Saanen - dairy | |
Rambouillet - wool | St Croix - hair/meat | Toggenburg - dairy | |
Merino - wool | Tunis - meat | Spanish - meat |
World Classification of Sheep Breeds:
Group | % of World | Breeds | Location | Function |
Finewool | 38-40 |
Merino Rambouillet |
Arid Regions | Wool and Meat |
Fat-Tail Carpet Wool |
25-30 |
Awassi Karakul Karamon Bakhtiari |
Arid Regions (Africa, Middle East and Asia) | Milk, Meat and Wool |
European Breeds Medium Wool |
14-15 |
Suffolk Hampshire Dorset Cheviot Texel Isle-de-France |
Temperate Regions (U.S. and Europe) | Meat Sire Breeds |
Long Wool | 13-15 |
Leicester Cotswold Romney Lincoln |
British Isles New Zealand |
Meat and Wool Sire Breeds |
Scientific Groupings of Sheep from Around the World:
Scientific Name | Common Name | Region | Diploid Chromosome No. (2n) |
Ovis nivicola | Siberian Snow sheep | Siberian | 52 |
Ovis aries | Domestic sheep | Worldwide | 54 |
Ovis canadensis | Rocky Mountain Bighorn sheep | North America | 54 |
Ovis dalli | Dall sheep | North America | 54 |
Ovis musimon | Europe Mouflon | Southern Europe | 54 |
Ovis orientalis | Asiatic Mouflon or "red sheep" | Southwestern Asia | 54 |
Ovis ammon | Arkkhar-Argali sheep | Central Asia, Mongollia, Tibet, Nepal | 56 |
Ovis vignei | Urial sheep | Southern Asia, Afghanistan, NE Iran | 58 |