|
Poll Dorset
The Poll Dorset, a short-wool, meat-producing sheep, was developed in Australia between 1937 and 1954 with the aim of breeding a true Dorset type sheep without horns. The poll gene was introduced into Dorset Horn flocks from two other polled breeds and following a strict back-mating programme achieved close to 100% of Dorset Horn blood. Its main distinguishing features are its hornless appearance, long, lean square body set on short legs, pink skin and 'spongy' short-stapled wool. The Poll Dorset produces a fleece of white, dense downs type wool of 30 microns fibre diameter and it has a white wool-free face.Stephens, M (''et al.''), ''Handbook of Australian Livestock'', Australian Meat & Livestock Export Corporation, 2000 (4th ed), The breed was developed at a property called ''Valmore'' in Whitemore, Tasmania, a noted centre for pedigree livestock stud farms. The Poll Dorset resulted from the introduction of Corriedale and Ryeland blood into the Dorset Horn. Poll Dorset rams ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poll Dorset
The Poll Dorset, a short-wool, meat-producing sheep, was developed in Australia between 1937 and 1954 with the aim of breeding a true Dorset type sheep without horns. The poll gene was introduced into Dorset Horn flocks from two other polled breeds and following a strict back-mating programme achieved close to 100% of Dorset Horn blood. Its main distinguishing features are its hornless appearance, long, lean square body set on short legs, pink skin and 'spongy' short-stapled wool. The Poll Dorset produces a fleece of white, dense downs type wool of 30 microns fibre diameter and it has a white wool-free face.Stephens, M (''et al.''), ''Handbook of Australian Livestock'', Australian Meat & Livestock Export Corporation, 2000 (4th ed), The breed was developed at a property called ''Valmore'' in Whitemore, Tasmania, a noted centre for pedigree livestock stud farms. The Poll Dorset resulted from the introduction of Corriedale and Ryeland blood into the Dorset Horn. Poll Dorset rams ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Suffolk
White Suffolk is an Australian breed of meat sheep developed for Australian conditions. Work commenced on a breeding program in the mid-1970s with experimentation conducted by Professor E. Roberts (University of New South Wales). His aim was to produce a breed with the conformation, structure and growth of the Suffolk but with a white head, legs and body. Professor Roberts had observed that despite the Suffolk breed producing clearly the best lambs, it commanded only a small share of the Australian prime lamb market. The main reason for this reluctance was caused by the dark points and the reduced skin values, in which dropped prices dramatically. In the 1980s other breeders also took up the challenge to develop the breed with improved quality and numbers. It was then developed from breeding programs involving the Suffolk breed, initially, crossed with a white breed (mainly Poll Dorset The Poll Dorset, a short-wool, meat-producing sheep, was developed in Australia between 1937 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polled Dorset
The Polled Dorset is an American breed of domestic sheep. It is a polled (hornless) variant of the British Dorset Horn. It was developed at the North Carolina State University Small Ruminant Unit in the 1950s after a genetic mutation led to the birth of a polled ram. After some years of breeding work, a true-breeding polled strain was established. It is an all-white sheep of medium size, prolific and able to breed out of season. The carcass is muscular with good conformation, and the fleece is free from dark fiber. The number of Polled Dorsets registered in the United States has grown to exceed the number of Horned Dorsets. History In 1949, four hornless lambs were sired by a Horned Dorset on a farm at North Carolina State University in Raleigh. Over the next five years, as part of their normal breeding program, those four ewes and the other ewes on the farm were bred to a Horned Dorset ram. Eventually, a ewe gave birth to twin rams: one was normally horned, but the other, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetics
Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring over time. He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene. Trait inheritance and molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded to study the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be separated from Asia by the watershed of the Ural Mountains, the Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area of , about 30% of Earth's total land area and 8.7% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population. In general terms, Asia is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat arbitrary and has moved since its first conception in classical antiquity. The division of Eurasia into two continents reflects East–West cultural, linguistic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Afric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle East
The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabia (including the Arabian Peninsula and Bahrain), Asia Minor (Asian part of Turkey except Hatay Province), East Thrace (European part of Turkey), Egypt, Iran, the Levant (including Ash-Shām and Cyprus), Mesopotamia (modern-day Iraq), and the Socotra Archipelago (a part of Yemen). The term came into widespread usage as a replacement of the term Near East (as opposed to the Far East) beginning in the early 20th century. The term "Middle East" has led to some confusion over its changing definitions, and has been viewed by some to be discriminatory or too Eurocentric. The region includes the vast majority of the territories included in the closely associated definition of Western Asia (including Iran), but without the South Caucasus, and additionally includes all of Egypt (not just the Sinai Region) and all of Turkey (not just the part barring East Thrace). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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 Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stud Farm
A stud farm or stud in animal husbandry is an establishment for selective breeding of livestock. The word " stud" comes from the Old English ''stod'' meaning "herd of horses, place where horses are kept for breeding". Historically, documentation of the breedings that occur on a stud farm leads to the development of a stud book. Male animals made available for breeding to outside female animals are said to be "standing at stud", or at "stud service", referencing the relatively high probability that they are kept at a stud farm. The word stud is often restricted to larger domesticated (especially farm) animals, such as cattle and horses. A specialized vocabulary exists for the studs of other animals, such as kennel (dog), cattery (cat) and aviary (birds). Horse stud farms Monastic stud farms During the Middle Ages, stud farms were often managed as part of a monastery. At the time, few people apart from monks could read and write, and so they were charged with the responsibil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitemore, Tasmania
Whitemore is a rural locality and small town in the local government area of Meander Valley in the Launceston region of Tasmania. The locality is about south-east of the town of Westbury. The 2016 census has a population of 198 for the state suburb of Whitemore. The town's land and surrounding rural area was first granted to Richard Dry in the 1830s then sold for farming to William Hingston in 1854. Hingston constructed a Wesleyan Chapel, near which a few later buildings were added. Over time the town has had a blacksmith, post office, library, shops and petrol station; none of these remain in the 21st Century. Shaw Contracting, a large Civil engineering firm formed by James Alan Hope Shaw, has been the most significant business in the town's history. Whitemore's most prominent features are the 1864 brick church, adjacent original church building dating from 1857—now a community hall—and the large workshop and offices of Shaw contracting. From 1870 to sometime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Europe")
.svg "Click for more on -> Africa")
.svg "Click for more on -> Middle East")
