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Polypay (sheep)
The Polypay sheep breed is a white, medium-sized (65 kg), polled sheep which was developed in the 1960s at the U.S. Sheep Experiment Station in Dubois, Idaho. In general, Polypay sheep are noted for being a highly prolific maternal dual-purpose ( meat and wool) breed. It produces yearly about 4.2 kg of wool and is weaned at 120 days. History Dr. Clarence V. Hulet, at the U.S. Sheep Experiment Station in Dubois, Idaho, had five main goals when creating the new breed. *High lifetime prolificacy *Large lamb crop at one year of age *Ability to lamb more frequently than once per year *Rapid growth rate of lambs *Desirable carcass quality The original breeding stock were taken from the Finnsheep for their high prolificacy, early puberty and short gestation, Dorset for their superior mothering ability, carcass quality, early puberty and long breeding season, Targhee for their large body size, long breeding season and quality fleeces, and Rambouillet for their adaptability, har ... [...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 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 Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rate Of Return
In finance, return is a profit on an investment. It comprises any change in value of the investment, and/or cash flows (or securities, or other investments) which the investor receives from that investment, such as interest payments, coupons, cash dividends, stock dividends or the payoff from a derivative or structured product. It may be measured either in absolute terms (e.g., dollars) or as a percentage of the amount invested. The latter is also called the holding period return. A loss instead of a profit is described as a '' negative return'', assuming the amount invested is greater than zero. To compare returns over time periods of different lengths on an equal basis, it is useful to convert each return into a return over a period of time of a standard length. The result of the conversion is called the rate of return. Typically, the period of time is a year, in which case the rate of return is also called the annualized return, and the conversion process, described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Kemp may refer to: Places * Kemp, Illinois * Kemp, Ohio * Kemp, Oklahoma * Kemp, Texas * Kemp Land and Kemp Coast, Antarctica * Kemp Town, a 19th-century estate in East Sussex, En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheep Shearing
Sheep shearing is the process by which the woollen fleece of a sheep is cut off. The person who removes the sheep's wool is called a ''shearer''. Typically each adult sheep is shorn once each year (a sheep may be said to have been "shorn" or "sheared", depending upon dialect). The annual shearing most often occurs in a shearing shed, a facility especially designed to process often hundreds and sometimes more than 3,000 sheep per day. Sheep are shorn in all seasons, depending on the climate, management requirements and the availability of a woolclasser and shearers. Ewes are normally shorn prior to lambing in the warmer months, but consideration is typically made as to the welfare of the lambs by not shearing during cold climate winters. However, in high country regions, pre lamb shearing encourages ewes to seek shelter among the hillsides so that newborn lambs aren't completely exposed to the elements. Shorn sheep tolerate frosts well, but young sheep especially will suffer ... [...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 List of Sheep Sheep or domestic sheep (''Ovis aries'') are domesticated, ruminant mammals t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Vigor
Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents. These effects can be due to Mendelian or non-Mendelian inheritance. Definitions In proposing the term heterosis to replace the older term heterozygosis, G.H. Shull aimed to avoid limiting the term to the effects that can be explained by heterozygosity in Mendelian inheritance. Heterosis is often discussed as the opposite of inbreeding depression, although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic drift in small populations on these concepts. Inbreeding depression occurs when related parents have children with traits that negatively influence their fitness largely due to homozygosity. In such instances, outcrossing sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scur
A scur is an incompletely developed horn growth. In cattle, scurs are not attached to the skull, whereas horns are attached and have blood vessels and nerves. Scurs may also occur in sheep. Genetic Inheritance The gene for scurs is inherited separately from the polled gene in cattle. Not all polled animals lack the scur gene. Since horned is recessive to polled, no horned cattle carry the polled allele, but they may also carry scurs. In cattle, genetic expression of the scur gene is different from that of the dominant polled gene, in that the scur gene's expression depends on the sex of the animal. The scur gene is dominant in males and recessive in females. See also * Horn (anatomy) A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent. In mammals, true horn ... * Polled livestock * Livestock dehornin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entropion
Entropion is a medical condition in which the eyelid (usually the lower lid) folds inward. It is very uncomfortable, as the eyelashes continuously rub against the cornea causing irritation. Entropion is usually caused by genetic factors. This is different from when an extra fold of skin on the lower eyelid causes lashes to turn in towards the eye (epiblepharon). In epiblepharons, the eyelid margin itself is in the correct position, but the extra fold of skin causes the lashes to be misdirected. Entropion can also create secondary pain of the eye (leading to self trauma, scarring of the eyelid, or nerve damage). The upper or lower eyelid can be involved, and one or both eyes may be affected. When entropion occurs in both eyes, this is known as "bilateral entropion". Repeated cases of trachoma infection may cause scarring of the inner eyelid, which may cause entropion. In human cases, this condition is most common to people over 60 years of age. Symptoms Symptoms of entropion includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 APSA Sale
Seventeen or 17 may refer to: *17 (number), the natural number following 16 and preceding 18 * one of the years 17 BC, AD 17, 1917, 2017 Literature Magazines * ''Seventeen'' (American magazine), an American magazine * ''Seventeen'' (Japanese magazine), a Japanese magazine Novels * ''Seventeen'' (Tarkington novel), a 1916 novel by Booth Tarkington *''Seventeen'' (''Sebuntiin''), a 1961 novel by Kenzaburō Ōe * ''Seventeen'' (Serafin novel), a 2004 novel by Shan Serafin Stage and screen Film * ''Seventeen'' (1916 film), an American silent comedy film *''Number Seventeen'', a 1932 film directed by Alfred Hitchcock * ''Seventeen'' (1940 film), an American comedy film *''Eric Soya's '17''' (Danish: ''Sytten''), a 1965 Danish comedy film * ''Seventeen'' (1985 film), a documentary film * ''17 Again'' (film), a 2009 film whose working title was ''17'' * ''Seventeen'' (2019 film), a Spanish drama film Television * ''Seventeen'' (TV drama), a 1994 UK dramatic short starring Christien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rambouillet (sheep)
The Rambouillet is a breed of sheep in the genus Ovis. It is also known as the Rambouillet Merino or the French Merino. The development of the Rambouillet breed started in 1786, when Louis XVI purchased over 300 Spanish Merinos (318 ewes, 41 rams, seven wethers) from his cousin Charles III of Spain. The flock was subsequently developed on an experimental royal farm, the ''Bergerie royale'' (now ''Bergerie nationale'') built during the reign of Louis XVI, at his request, on his domain of Rambouillet, 50 km southwest of Paris, which Louis XVI had purchased in December 1783 from his cousin Louis Jean Marie de Bourbon, Duke of Penthièvre. The flock was raised exclusively at the ''Bergerie'', with no sheep being sold for several years, well into the 19th century. Outcrossing with English long-wool breeds and selection produced a well-defined breed, differing in several important points from the original Spanish Merino. The size was greater, with full-grown ewes weighing up to 2 ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Targhee Sheep
The Targhee is a breed of domestic sheep developed in early 20th century by the USDA's Agricultural Research Service. Targhee sheep are a dual-purpose breed, with heavy, medium quality wool and good meat production characteristics. They are hardy, and are especially suited to the ranges of the West where they were developed. Targhee are especially popular in Montana, Wyoming and South Dakota, where their ¾ fine wool and ¼ long wool breeding is favored by western ranchers. This breed is raised primarily for wool. Characteristics Mature body weight in the rams is 200 lb (90 kg) to 300 lb (135 kg), with the ewes weighing slightly less at 125 lb (56 kg) to 200 lb (90 kg). Each ewe will average a 10 lb (4.5 kg) to 14 lb (6.3 kg) fleece; it has a fibre diameter of 21 to 25 micrometers and a spinning count of 64 to 58. The staple length of the fleece will be 3 inches (7.5 cm) to 5 inches (11 cm) wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
