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Drysdale (sheep)
The Drysdale is a New Zealand breed of sheep. It was developed from 1931 by Francis Dry, and derives from sheep of the New Zealand Romney breed in which a mutation caused the coat to be particularly hairy, and thus suitable for carpet-making. It is a specialised carpet wool breed, but also a useful meat breed. History Francis Dry in 1931 noticed a genetic freak, a Romney ram with a high percentage of very coarse wool. Crossing two Romneys and Cheviots resulted in a sheep with a lot of coarse fleece which is about with a 40 microns The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...Preparation of Australian Wool Clips, Code of Practice 2010-2012, Australian Wool Exchange (AWEX), 2010 fibre diameter''Sheep breed compendium'', Australian Wool Exchange (AWEX), 2010 and a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DAD-IS
DAD-IS is the acronym of the worldwide Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations, within the FAO's management of animal genetic resources programme.Domestic Animal Diversity Information System (DADIS)- About. Food and Agriculture Organization of the United Nations. It includes a searchable database of information about breeds, the Global Databank for Animal Genetic Resources; it also holds tools for management, and contacts for the National and Regional Coordinators for the programme. Data frothe Global Databankis used for reporting on the global status and trends of animal genetic resources. The fourth version of the DAD-IS was launched on 21 November 2017. Breeds in the Global Databank There were 11,116 mammalian national breed populations in DAD-IS as of February 2016, and 3,799 avian national breed populations.2016. FAO. Status of Animal Genetic Resources. http://www.fao.org/documents/card/en/c/c40d538b-476 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polled Livestock
Polled livestock are livestock without horns in species which are normally horned. The term refers to both breeds and strains that are naturally polled through selective breeding and also to naturally horned animals that have been disbudded. Natural polling occurs in cattle, yaks, water buffalo, and goats, and in these animals it affects both sexes equally; in sheep, by contrast, both sexes may be horned, both polled, or only the females polled. The history of breeding polled livestock starts about 6000 years BC. Terminology The archaic term or is sometimes used to refer to hornless livestock (especially cattle) in folk songs, folk tales, and poetry, and in the name of the polled Irish Moiled cattle breed. "Muley" derives from Irish and Scottish Gaelic ''maol'', and Welsh ''moel''. Genetics In cattle, the polled allele is genetically dominant to that for horns. The polled trait is far more common in beef breeds than in dairy breeds. CRISPR technology is being developed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Sheep Breeds
This is a list of breeds of domestic sheep. Domestic sheep (''Ovis aries'') are partially derived from mouflon (''Ovis gmelini'') stock, and have diverged sufficiently to be considered a different species. Domestic sheep breeds Sorted alphabetically. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Notes See also * List of cattle breeds * List of domestic pig breeds * List of goat breeds * Lists of domestic animal breeds References Sources * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * External links Breeds of Livestock - Sheep BreedsDepartment of Animal Science - Oklahoma State University {{Breed Sheep breeds, List of Lists of breeds, Sheep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domestic Sheep
Sheep or domestic sheep (''Ovis aries'') are domesticated, ruminant mammals typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus ''Ovis'', in everyday usage it almost always refers to domesticated sheep. Like all ruminants, sheep are members of the order (biology), order Artiodactyla, the even-toed ungulates. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female is referred to as a ''ewe'' (), an intact male as a ''ram'', occasionally a ''tup'', a castrated male as a ''wether'', and a young sheep as a ''lamb''. Sheep are most likely descended from the wild mouflon of Europe and Asia, with Iran being a geographic envelope of the domestication center. One of the earliest animals to be domesticated for agricultural purposes, sheep are raised for fleeces, meat (lamb, hogget or mutton) and sheep milk, milk. A sheep's wool is the most widely used animal fiber, and is usually harvest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Dry
Francis William Dry (23 October 1891 – 14 July 1979) was a New Zealand geneticist, biologist, university lecturer and wool researcher. He was born in Driffield, Yorkshire, England, on 23 October 1891. In the 1973 New Year Honours, Dry was appointed an Officer of the Order of the British Empire, for services to the wool industry. Biography Francis William Dry was born in Driffield, Yorkshire, in 1891 to Frank Dry and Mary Avis Corke. He received his schooling at Driffield Board School and Bridlington Grammar School before graduating BSc (1913) and MSc (1914) from the University of Leeds. After a stint in Kenya and the United States, where he got married, Dry returned to Leeds in 1921 and was awarded an Ackroyd Memorial Research Fellowship. This was a watershed moment in his career and laid the basis for his future research. For his PhD that followed, he made a study of the coat of the mouse. This research was published in 1926 and for many decades remained the definitive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Romney
The New Zealand Romney is a New Zealand list of sheep breeds, breed of domestic sheep, sheep. It derives from British Romney Marsh (sheep), Romney Marsh stock imported to New Zealand in the nineteenth century, and was established as a separate breed in 1904. It is the most numerous sheep breed in New Zealand. History The New Zealand Romney derives from British Romney Marsh (sheep), Romney Marsh stock imported to New Zealand in the nineteenth century. It was established as a separate breed in 1904 with the formation of the New Zealand Romney Marsh Sheep Breeders' Association, and the first flock-book was published in the following year. By 1915 it was the most numerous sheep breed in the country. In 2000 the Romney constituted almost 60% of the national herd, with some 26.3 million head. It has contributed to the development of a number of modern breeds, among them the Coopworth, the Drysdale (sheep), Drysdale, the Elliotdale (sheep), Elliotdale, the Perendale and the Tuk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutation
In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair (especially microhomology-mediated end joining), cause an error during other forms of repair, or cause an error during replication (translesion synthesis). Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements. Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity. Mutation is the ultimate source o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpet
A carpet is a textile floor covering typically consisting of an upper layer of pile attached to a backing. The pile was traditionally made from wool, but since the 20th century synthetic fibers such as polypropylene, nylon, or polyester have often been used, as these fibers are less expensive than wool. The pile usually consists of twisted tufts that are typically heat-treated to maintain their structure. The term ''carpet'' is often used in a similar context to the term ''rug'', but rugs are typically considered to be smaller than a room and not attached to the floor. Carpets are used for a variety of purposes, including insulating a person's feet from a cold tile or concrete floor, making a room more comfortable as a place to sit on the floor (e.g., when playing with children or as a prayer rug), reducing sound from walking (particularly in apartment buildings), and adding decoration or color to a room. Carpets can be made in any color by using differently dyed fibers. C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpet Wool
Wool is the textile fibre obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to inorganic materials, such as mineral wool and glass wool, that have properties similar to animal wool. As an animal fibre, wool consists of protein together with a small percentage of lipids. This makes it chemically quite distinct from cotton and other plant fibres, which are mainly cellulose. Characteristics Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber: kemp, medullated fibers, and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lack crimp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheviot Sheep
The Cheviot is a breed of white-faced sheep which gets its name from a range of hills in north Northumberland and the Scottish Borders. It is still common in this area of the United Kingdom, but also in northwest Scotland, Wales, Ireland and the southwest of England (especially Dartmoor and Exmoor Exmoor is loosely defined as an area of hilly open moorland in west Somerset and north Devon in South West England. It is named after the River Exe, the source of which is situated in the centre of the area, two miles north-west of Simonsbath ...), as well as more rarely in Australia, New Zealand, Norway (2%), and the United States. The Cheviot is a dual-purpose breed, being raised primarily for its wool and meat. See also * Border Cheviot * Brecknock Hill Cheviot * North Country Cheviot * Western Hilly Cheviot * Wicklow Cheviot References External linksCheviot description as a rare breed in Australia [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wool Measurement
A micron (micrometre) is the measurement used to express the diameter of wool fibre. Fine wool fibers have a low micron value. Fibre diameter is the most important characteristic of wool in determining its value. Every fleece comprises a very wide range of fibre diameters—for example a typical Merino fleece will contain fibres of as low as 10 microns in diameter, and there could be fibres with diameters exceeding 25 microns, depending on the age and health (or nutrition) of the sheep. What is usually referred to as wool's "micron" is the mean of the fibre diameters or average diameter. This may be measured in a number of different ways. Small samples can be taken from the side or fleece of a sheep and measured using a portable instrument such as an OFDA2000 (Optical Fibre Diameter Analyser); or a mobile instrument system called a Fleecescan. Both these systems have been studied extensively and if used correctly, they should give reasonably reliable results. Pre wool classing m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheep Breeds Originating In New Zealand
Sheep or domestic sheep (''Ovis aries'') are domesticated, ruminant mammals typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus ''Ovis'', in everyday usage it almost always refers to domesticated sheep. Like all ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female is referred to as a ''ewe'' (), an intact male as a ''ram'', occasionally a ''tup'', a castrated male as a ''wether'', and a young sheep as a ''lamb''. Sheep are most likely descended from the wild mouflon of Europe and Asia, with Iran being a geographic envelope of the domestication center. One of the earliest animals to be domesticated for agricultural purposes, sheep are raised for fleeces, meat (lamb, hogget or mutton) and milk. A sheep's wool is the most widely used animal fiber, and is usually harvested by shearing. In Commonwea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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