1.
Agriculture
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Agriculture is the cultivation and breeding of animals, plants and fungi for food, fiber, biofuel, medicinal plants and other products used to sustain and enhance human life. Agriculture was the key development in the rise of human civilization. The study of agriculture is known as agricultural science, the history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. Industrial agriculture based on large-scale monoculture farming has become the dominant agricultural methodology, genetically modified organisms are an increasing component of agriculture, although they are banned in several countries. Agricultural food production and water management are increasingly becoming global issues that are fostering debate on a number of fronts, the major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials. Specific foods include cereals, vegetables, fruits, oils, meats, fibers include cotton, wool, hemp, silk and flax. Raw materials include lumber and bamboo, other useful materials are also produced by plants, such as resins, dyes, drugs, perfumes, biofuels and ornamental products such as cut flowers and nursery plants. The word agriculture is a late Middle English adaptation of Latin agricultūra, from ager, field, Agriculture usually refers to human activities, although it is also observed in certain species of ant, termite and ambrosia beetle. To practice agriculture means to use resources to produce commodities which maintain life, including food, fiber, forest products, horticultural crops. This definition includes arable farming or agronomy, and horticulture, all terms for the growing of plants, even then, it is acknowledged that there is a large amount of knowledge transfer and overlap between silviculture and agriculture. In traditional farming, the two are often combined even on small landholdings, leading to the term agroforestry, Agriculture began independently in different parts of the globe, and included a diverse range of taxa. At least 11 separate regions of the Old and New World were involved as independent centers of origin, wild grains were collected and eaten from at least 105,000 years ago. Pigs were domesticated in Mesopotamia around 15,000 years ago, rice was domesticated in China between 13,500 and 8,200 years ago, followed by mung, soy and azuki beans. Sheep were domesticated in Mesopotamia between 13,000 and 11,000 years ago. From around 11,500 years ago, the eight Neolithic founder crops, emmer and einkorn wheat, hulled barley, peas, lentils, bitter vetch, chick peas and flax were cultivated in the Levant. Cattle were domesticated from the aurochs in the areas of modern Turkey. In the Andes of South America, the potato was domesticated between 10,000 and 7,000 years ago, along with beans, coca, llamas, alpacas, sugarcane and some root vegetables were domesticated in New Guinea around 9,000 years ago. Sorghum was domesticated in the Sahel region of Africa by 7,000 years ago, cotton was domesticated in Peru by 5,600 years ago, and was independently domesticated in Eurasia at an unknown time
2.
Animal husbandry
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Animal husbandry is the management and care of farm animals by human beings, in which genetic qualities and behavior, considered to be advantageous to humans, are further developed. The term can refer to the practice of breeding and raising livestock to promote desirable traits in animals for utility, sport, pleasure. Animal husbandry has been practiced for thousands of years since the first domestication of animals, selective breeding for desired traits was first established as a scientific practice by Robert Bakewell during the British Agricultural Revolution in the 18th century. One of his most important breeding programs was with sheep, using native stock, he was able to quickly select for large, yet fine-boned sheep, with long, lustrous wool. The Lincoln Longwool was improved by Bakewell and in turn the Lincoln was used to develop the subsequent breed, named the New Leicester and it was hornless and had a square, meaty body with straight top lines. These sheep were exported widely and have contributed to modern breeds. Under his influence, English farmers began to breed cattle for use primarily as beef for consumption -, long-horned heifers were crossed with the Westmoreland bull to eventually create the Dishley Longhorn. Over the following decades, farm animals increased dramatically in size, in 1700, the average weight of a bull sold for slaughter was 370 pounds. By 1786, that weight had more than doubled to 840 pounds, in more modern times herds are tended on horses, all-terrain vehicles, motorbikes, four-wheel drive vehicles, and helicopters, depending on the terrain and livestock concerned. Today, herd managers often oversee thousands of animals and many staff, farms, stations and ranches may employ breeders, herd health specialists, feeders, and milkers to help care for the animals. Techniques such as artificial insemination and embryo transfer are used today, not only as methods to guarantee that females breed regularly. This may be done by transplanting embryos from high-quality females into lower-quality surrogate mothers - freeing up the higher-quality mother to be reimpregnated and this practice vastly increases the number of offspring which may be produced by a small selection of the best quality parent animals. On one hand, this improves the ability of the animals to feed to meat, milk, or fiber more efficiently. On the other, it decreases genetic diversity, increasing the severity of disease outbreaks among other risks. The semi-natural, unfertilized pastures formed by traditional methods in Europe, were managed and maintained by the grazing and mowing of livestock. Animal agriculture is responsible for 20%-33% of all fresh water consumption in the world today, livestock or livestock feed occupies 1/3 of the earth’s ice-free land. Animal agriculture is the cause of species extinction, ocean dead zones, water pollution. Animal agriculture contributes to species extinction in many ways, the widespread use of pesticides, herbicides and chemical fertilizers used in the production of feed crops often interferes with the reproductive systems of animals and poison waterways
3.
Selective breeding
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Domesticated animals are known as breeds, normally bred by a professional breeder, while domesticated plants are known as varieties, cultigens, or cultivars. Two purebred animals of different breeds produce a crossbreed, and crossbred plants are called hybrids, flowers, vegetables and fruit-trees may be bred by amateurs and commercial or non-commercial professionals, major crops are usually the provenance of the professionals. There are two approaches or types of selection, or selective breeding. The second is called controlled natural selection, which is natural selection in a controlled environment. In this, the breeder does not choose which individuals being tested survive or reproduce, there are also selection experiments, which is a third approach and these are conducted in order to determine the strength of natural selection in the wild. However, this is often an observational approach as opposed to an experimental approach. In animal breeding, techniques such as inbreeding, linebreeding, in plant breeding, similar methods are used. Charles Darwin discussed how selective breeding had been successful in producing change over time in his 1859 book and its first chapter discusses selective breeding and domestication of such animals as pigeons, cats, cattle, and dogs. Darwin used artificial selection as a springboard to introduce and support the theory of natural selection, the deliberate exploitation of selective breeding to produce desired results has become very common in agriculture and experimental biology. Selective breeding can be unintentional, e. g. resulting from the process of human cultivation, for example, in some grains, an increase in seed size may have resulted from certain ploughing practices rather than from the intentional selection of larger seeds. Most likely, there has been an interdependence between natural and artificial factors that have resulted in plant domestication, Selective breeding was practiced by the Romans. Treatises as much as 2,000 years old give advice on selecting animals for different purposes, the notion of selective breeding was later expressed by the Persian Muslim polymath Abu Rayhan Biruni in the 11th century. He noted the idea in his book titled India, which included various examples, the agriculturist selects his corn, letting grow as much as he requires, and tearing out the remainder. The forester leaves those branches which he perceives to be excellent, the bees kill those of their kind who only eat, but do not work in their beehive. Selective breeding was established as a practice by Robert Bakewell during the British Agricultural Revolution in the 18th century. Arguably, his most important breeding program was with sheep, using native stock, he was able to quickly select for large, yet fine-boned sheep, with long, lustrous wool. The Lincoln Longwool was improved by Bakewell, and in turn the Lincoln was used to develop the subsequent breed, named the New Leicester and it was hornless and had a square, meaty body with straight top lines. Bloodlines of these original New Leicesters survive today as the English Leicester, Bakewell was also the first to breed cattle to be used primarily for beef
4.
Cowboy
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A cowboy is an animal herder who tends cattle on ranches in North America, traditionally on horseback, and often performs a multitude of other ranch-related tasks. The historic American cowboy of the late 19th century arose from the traditions of northern Mexico and became a figure of special significance. A subtype, called a wrangler, specifically tends the horses used to work cattle, in addition to ranch work, some cowboys work for or participate in rodeos. There are also cattle handlers in many parts of the world, particularly South America and Australia. The cowboy has deep historic roots tracing back to Spain and the earliest European settlers of the Americas, over the centuries, differences in terrain, climate and the influence of cattle-handling traditions from multiple cultures created several distinct styles of equipment, clothing and animal handling. As the ever-practical cowboy adapted to the world, the cowboys equipment and techniques also adapted to some degree. The English word cowboy has an origin from several earlier terms that referred to both age and to cattle or cattle-tending work, the word cowboy appeared in the English language by 1725. It appears to be a direct English translation of vaquero, a Spanish word for an individual who managed cattle while mounted on horseback and it was derived from vaca, meaning cow, which came from the Latin word vacca. Another English word for a cowboy, buckaroo, is an anglicization of vaquero, originally, the term may have been intended literally—a boy who tends cows. By 1849 it had developed its sense as an adult cattle handler of the American West. Variations on the word cowboy appeared later, cowhand appeared in 1852, and cowpoke in 1881, originally restricted to the individuals who prodded cattle with long poles to load them onto railroad cars for shipping. Names for a cowboy in American English include buckaroo, cowpoke, cowhand, the word cowboy also had English language roots beyond simply being a translation from Spanish. Originally, the English word cowherd was used to describe a cattle herder, and often referred to a preadolescent or early adolescent boy and this word is very old in the English language, originating prior to the year 1000. In antiquity, herding of sheep, cattle and goats was often the job of minors, on western ranches today, the working cowboy is usually an adult. Responsibility for herding cattle or other livestock is no longer considered a job suitable for children or early adolescents. However, both boys and girls growing up in a ranch environment often learn to ride horses and perform basic ranch skills as soon as they are physically able, such youths, by their late teens, are often given responsibilities for cowboy work on the ranch. The term cowboy was used during the American Revolution to describe American fighters who opposed the movement for independence, in the same period, a number of guerilla bands operated in Westchester County, which marked the dividing line between the British and American forces. These groups were made up of local farmhands who would ambush convoys, there were two separate groups, the skinners fought for the pro-independence side, the cowboys supported the British
5.
Amusement park
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An amusement park or theme park is a group of entertainment attractions, rides, and other events in a location for the enjoyment of large numbers of people. Theme parks, a type of amusement park, are usually much more intricately themed to a certain subject or group of subjects than normal amusement parks. Amusement parks evolved from European fairs and pleasure gardens, which were created for peoples recreation, Worlds fairs and expositions were another influence on the development of the amusement park industry. In common language, the theme park and amusement park are often synonymous. However, a park can be regarded as a distinct style of amusement park. A theme park has landscaping, buildings, and attractions that are based on one or more specific themes or stories. The amusement park evolved from three earlier traditions, the oldest being the periodic fair of the Middle Ages - one of the earliest was the Bartholomew Fair in England, the worlds oldest amusement park appeared in the Continent. Bakken at Klampenborg, north of Copenhagen, Denmark, opened in 1583, a wave of innovation in the 1860s and 1870s created mechanical rides, such as the steam-powered carousel, and its derivatives. This inaugurated the era of the modern funfair ride, as the classes were increasingly able to spend their surplus wages on entertainment. The second influence was the pleasure garden, one of the earliest gardens was the Vauxhall Gardens, founded in 1661 in London. By the late 18th century, the site had a fee for its many attractions. It regularly drew crowds, with its paths being noted for romantic assignations, tightrope walkers, hot air balloon ascents, concerts. Although the gardens were designed for the elites, they soon became places of great social diversity. Public firework displays were put on at Marylebone Gardens, and Cremorne Gardens offered music, dancing, prater in Vienna, Austria, was opened in 1766. The concept of a park for amusement was further developed with the beginning of the worlds fairs. The first World fair began in 1851 with the construction of the landmark Crystal Palace in London, the purpose of the exposition was to celebrate the industrial achievement of the nations of the world and it was designed to educate and entertain the visitors. American cities and business saw the worlds fair as a way of demonstrating economic. The Worlds Columbian Exposition of 1893 in Chicago, Illinois was an precursor to the modern amusement park
6.
Lancashire
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Lancashire is a non-metropolitan ceremonial county in north west England. The county town is Lancaster although the administrative centre is Preston. The county has a population of 1,449,300, people from Lancashire are known as Lancastrians. The history of Lancashire begins with its founding in the 12th century, in the Domesday Book of 1086, some of its lands were treated as part of Yorkshire. The land that lay between the Ribble and Mersey, Inter Ripam et Mersam, was included in the returns for Cheshire, when its boundaries were established, it bordered Cumberland, Westmorland, Yorkshire, and Cheshire. Lancashire emerged as a commercial and industrial region during the Industrial Revolution. Liverpool and Manchester grew into its largest cities, dominating global trade, the county contained several mill towns and the collieries of the Lancashire Coalfield. By the 1830s, approximately 85% of all cotton manufactured worldwide was processed in Lancashire, Accrington, Blackburn, Bolton, Burnley, Bury, Chorley, Colne, Darwen, Manchester, Nelson, Oldham, Preston, Rochdale and Wigan were major cotton mill towns during this time. Blackpool was a centre for tourism for the inhabitants of Lancashires mill towns, the detached northern part of Lancashire in the Lake District, including the Furness Peninsula and Cartmel, was merged with Cumberland and Westmorland to form Cumbria. Lancashire lost 709 square miles of land to other counties, about two fifths of its area, although it did gain some land from the West Riding of Yorkshire. Today the county borders Cumbria to the north, Greater Manchester and Merseyside to the south and North and West Yorkshire to the east, with a coastline on the Irish Sea to the west. The county palatine boundaries remain the same with the Duke of Lancaster exercising sovereignty rights, including the appointment of lords lieutenant in Greater Manchester, the county was established in 1182, later than many other counties. During Roman times the area was part of the Brigantes tribal area in the zone of Roman Britain. The towns of Manchester, Lancaster, Ribchester, Burrow, Elslack, in the centuries after the Roman withdrawal in 410AD the northern parts of the county probably formed part of the Brythonic kingdom of Rheged, a successor entity to the Brigantes tribe. During the mid-8th century, the area was incorporated into the Anglo-Saxon Kingdom of Northumbria, in the Domesday Book, land between the Ribble and Mersey were known as Inter Ripam et Mersam and included in the returns for Cheshire. Although some historians consider this to mean south Lancashire was then part of Cheshire and it is also claimed that the territory to the north formed part of the West Riding of Yorkshire. It bordered on Cumberland, Westmorland, Yorkshire, and Cheshire, the county was divided into hundreds, Amounderness, Blackburn, Leyland, Lonsdale, Salford and West Derby. Lonsdale was further partitioned into Lonsdale North, the part north of the sands of Morecambe Bay including Furness and Cartmel
7.
Show jumping
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Show jumping, also known as stadium jumping, open jumping, or simply jumping, is a part of a group of English riding equestrian events that also includes dressage, eventing, hunters, and equitation. Jumping classes are seen at horse shows throughout the world. International competitions are governed by the rules of the International Federation for Equestrian Sports, Show jumping events have hunter classes, jumper classes and hunt seat equitation classes. Hunters are judged subjectively on the degree to which they meet a standard of manners, style. Jumper courses tend to be more complex and technical than hunter courses because riders. Courses often are colorful and at times, quite creatively designed, hunters have meticulous turnout and tend toward very quiet, conservative horse tack and rider attire. Hunter bits, bridles, crops, spurs, and martingales are tightly regulated, formal turnout always is preferred, a neat rider gives a good impression at shows. In addition to hunters and jumpers, there are classes, sometimes called hunt seat equitation. The equipment, clothing, and fence styles used in more closely resemble hunter classes. Jumper classes are held over a course of show jumping obstacles, including verticals, spreads, the intent is to jump cleanly over a set course within an allotted time. Time faults are assessed for exceeding the time allowance, Jumping faults are incurred for knockdowns and blatant disobedience, such as refusals. Horses are allowed a number of refusals before being disqualified. A refusal may lead to a rider exceeding the time allowed on course, placings are based on the lowest number of points or faults accumulated. A horse and rider who have not accumulated any jumping faults or penalty points are said to have scored a clear round. Tied entries usually have a jump-off over a raised and shortened course, and the course is timed, if entries are tied for faults accumulated in the jump-off, the fastest time wins. In most competitions, riders are allowed to walk the initial course, going off course will cost time if minor errors are made and major departures will result in disqualification. The higher levels of competition, such as A or AA rated shows in the United States, or the international Grand Prix circuit, present more technical and complex courses. Not only is the height and width of an obstacle increased to present a challenge, technical difficulty also increases with tighter turns
8.
Demolition derby
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Demolition derby is a motorsport usually presented at county fairs and festivals. While rules vary from event to event, the demolition derby event consists of five or more drivers competing by deliberately ramming their vehicles into one another. The last driver whose vehicle is still operational is awarded the victory, Demolition derbies originated in the United States and quickly spread to other Western nations. In Europe, this type of event is called banger racing, although in a derby, racers do not race against each other. The first demolition derby in Australia took place in January 1963, although serious injuries are rare, they do happen. Drivers are typically required to sign a waiver to release the promoter of an event from liability, to make the event safer, all glass is removed from the vehicle, and deliberately ramming the drivers-side door area is forbidden. The drivers door is often required to be painted white with black numbers or blaze orange, or with contrasting colors, most demolition derbies are held on dirt tracks, or in open fields, that are usually soaked with water. This causes the area to become muddy, which helps to further slow the vehicles. The part of the used to ram opponents varies. Some drivers use both the front and rear of the vehicle to ram the other competitors, others tend to use only the rear end of the vehicle, to help protect the engine compartment from damage. Demolition derbies were first held at fairs, race tracks. There are unconfirmed reports of events occurring as far back as the 1930s utilizing the abundant supply of worn-out Ford Model Ts, in 1896, two steam locomotives were collided before 40,000 spectators as a publicity stunt for the Missouri–Kansas–Texas Railroad, resulting in fatalities. The originator of the concept for demolition derbies is disputed. One source says that Don Basile is often credited with inventing the demolition derby at Carrell Speedway in 1947, another source states stock car racer Larry Mendelsohn created the concept for demolition derbies at New York States Islip Speedway in 1958 after realizing many people favored wrecks to racing. The sports popularity grew throughout the 1960s, becoming a standard at county fairs, the popularity of demolition derbies also spread overseas. In 1963 a reported crowd of 20,000 packed into the Rowley Park Speedway in Adelaide to see Australias first demolition derby, due to the size of the crowd, the police closed the speedways gates. The derby itself had over 75 entries and lasted for over 100 minutes, Demolition derbies in Australia generally take place at speedways, with most cars being older model Australian-made sedans and wagons. ABCs Wide World of Sports televised the World Championship Demolition Derby from the mid-1960s until 1992, also in 1972, the Los Angeles Coliseum hosted a demolition derby with mint-condition late model cars driven by Mario Andretti, A. J. Foyt, and Bobby Unser
9.
Rodeo
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Rodeo is a competitive sport that arose out of the working practices of cattle herding in Spain, Mexico, and later Central America, the United States, Canada, South America, Australia and New Zealand. It was based on the skills required of the vaqueros and later, cowboys, in what today is the western United States, western Canada. Today it is an event that involves horses and other livestock, designed to test the skill and speed of the cowboys. American style professional rodeos generally comprise the events, tie-down roping, team roping, steer wrestling, saddle bronc riding, bareback bronc riding, bull riding. The events are divided into two categories, the rough stock events and the timed events. Depending on sanctioning organization and region, other such as breakaway roping, goat tying. American rodeo, particularly popular today within the Canadian province of Alberta and throughout the western United States, is the state sport of Wyoming, South Dakota. The iconic silhouette image of a Bucking Horse and Rider is a federal, the Legislative Assembly of Alberta has considered making American rodeo the official sport of that province. However, enabling legislation has yet to be passed, associations also exist for Native Americans and other minority groups. Rodeo has provoked opposition from animal rights and animal welfare advocates, the American rodeo industry has made progress in improving the welfare of rodeo animals, with specific requirements for veterinary care and other regulations that protect rodeo animals. However, rodeo is opposed by a number of animal welfare organizations in the United States, some local and state governments in North America have banned or restricted rodeos, certain rodeo events, or types of equipment. Internationally, rodeo is banned in the United Kingdom and the Netherlands, the American English word rodeo is taken directly from Spanish rodeo, which roughly translates into English as round up. The yearly rodeos for separating the cattle were overseen by the Juez del Campo, the term was also used to refer to exhibitions of skills used in the working rodeo. This evolved from these yearly gatherings where festivities were held and horsemen could demonstrate their equestrian skills and it was this latter usage which was adopted into the cowboy tradition of the United States and Canada. The term rodeo was first used in English in approximately 1834 to refer to a cattle round-up, today the word is used primarily to refer to a public exhibition of cowboy skills, usually in the form of a competitive event. Many rodeo events were based on the tasks required by cattle ranching, the working cowboy developed skills to fit the needs of the terrain and climate of the American west, and there were many regional variations. The skills required to manage cattle and horses back to the Spanish traditions of the vaquero. Early rodeo-like affairs of the 1820s and 1830s were informal events in the western United States and northern Mexico with cowboys, following the American Civil War, rodeo competitions emerged, with the first held in Cheyenne, Wyoming in 1872
10.
Woodchopping
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Woodchopping, called woodchop for short, is a sport that has been around for hundreds of years in several cultures. In woodchopping competitions, skilled contestants attempt to be the first to cut or saw through a log or other block of wood and it is often held at state fairs and agricultural shows. Participants are often referred to as axemen, the modern sport of woodchopping is said to have had its genesis in 1870 in Ulverstone, Tasmania, as the result of a £25 bet between two axemen as to who could first fell a tree. The worlds first woodchopping championship was held in 1891, at Bells Parade, Latrobe and this event was celebrated and commemorated with the selection of the site to be the home of the Australian Axemens Hall of Fame and Timberworks. Woodchopping is practiced in regions where forestry is or has been an important part of the economy, In North America, in Canada and in the north of the United States. In Europe, in Austria, the Czech Republic, Germany, Netherlands, Norway, Switzerland, England, Slovenia, the Alpine region of France, the Basque Country, other parts of Spain. Many woodchopping events are events, where the axemen start at different times. In New Zealand and parts of Australia, each axemans individual handicap is recorded in books which are graded on how many events they win. Championship events are scratch events with no handicap, and typically use larger diameter logs, handicap events may use logs of 250 mm to 350 mm, depending on the skill of the competitors. All competitors have the same log, the handicap is based purely on time. This event is done by an individual cutting a scarf in one side, in this event, the axeman stands on the top of the log and uses a downwards motion to chop the log in two as fast as possible. This is done by cutting a scarf in the front side and then turning around on the block and these scarfs are generally offset from each other, the degree of offset depending on the size of the log and the axeman’s preference. In this event the axeman cuts a small pocket in the side of a pole, the shoe is designed to grip into the wood when pressure is put on it from the top. After the axeman has climbed onto his first board he then cuts another pocket, once up on his top board he proceeds to cut the block on the top of the pole. There are two versions of tree felling, The three board, which is most common in Australia and New Zealand. The axeman goes up one side of the pole and cuts his first scarf in the side of the block, the axeman then descends the pole and repeats this on the other side of pole. This event is seen as the event of woodchopping and it typically lasts three to five minutes. The axeman then turns around on the top board and chops through the block using downwards blows only and this event lasts 50 to 80 seconds, much less than the jigger board
11.
Livestock
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Livestock are domesticated animals raised in an agricultural setting to produce commodities such as food, fiber, and labor. The term is used to refer solely to those raised for food. In recent years, some organizations have also raised livestock to promote the survival of rare breeds, animal husbandry practices have varied widely across cultures and time periods. Originally, livestock were not confined by fences or enclosures, but these practices have largely shifted to intensive animal farming and these practices increase yield of the various commercial outputs, but have led to increased concerns about animal welfare and environmental impact. Livestock production continues to play an economic and cultural role in numerous rural communities. Livestock as a word was first used between 1650 and 1660, as a merger between the live and stock. Older English sources, such as the King James Version of the Bible, the word cattle is derived from Old North French catel, which meant all kinds of movable personal property, including livestock, which was differentiated from immovable real estate. In later English, sometimes smaller livestock such as chickens and pigs were referred to as small cattle, today, the modern meaning of cattle, without a modifier, usually refers to domesticated bovines, but sometimes livestock refers only to this subgroup. Legal definition United States federal legislation sometimes more narrowly defines the term to make specified agricultural commodities either eligible or ineligible for a program or activity, for example, the Livestock Mandatory Reporting Act of 1999 defines livestock only as cattle, swine, and sheep. Animal-rearing originated during the transition to settled farming communities from hunter-gatherer lifestyles. Animals are domesticated when their breeding and living conditions are controlled by humans, over time, the collective behaviour, lifecycle and physiology of livestock have changed radically. Many modern farm animals are unsuited to life in the wild, dogs were domesticated in East Asia about 15,000 years ago. Goats and sheep were domesticated around 8000 BC in Asia, swine or pigs were domesticated by 7000 BC in the Middle East and China. The earliest evidence of horse domestication dates to around 4000 BC, the term livestock is nebulous and may be defined narrowly or broadly. Broadly, livestock refers to any breed or population of animal kept by humans for a useful and this can mean domestic animals, semidomestic animals, or captive wild animals. Semidomesticated refers to animals which are only lightly domesticated or of disputed status and these populations may also be in the process of domestication. Some people may use the term livestock to refer to only used for red meat. Livestock are used by humans for a variety of purposes, many of which have an economic value, Livestock products include, Meat A useful form of dietary protein and energy, meat is the edible tissue of the animal carcass
12.
Domestic pig
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The domestic pig, often called swine, hog, or pig when there is no need to distinguish it from other pigs, is a large, even-toed ungulate. It is variously considered a subspecies of the boar or a distinct species. The domestic pigs head-plus-body-length ranges from 0.9 to 1.8 m, compared to other artiodactyls, its head is relatively long, pointed, and free of warts. Even-toed ungulates are generally herbivorous, but the pig is an omnivore. Domestic pigs are farmed primarily for the consumption of their meat called pork, the animals bones, hide, and bristles are also used in commercial products. Domestic pigs, especially the pig and micro pig, are sometimes kept as pets. The domestic pig typically has a head, with a long snout which is strengthened by a special prenasal bone. The snout is used to dig into the soil to find food, the dental formula of adult pigs is 3.1.4.33.1.4.3, giving a total of 44 teeth. The rear teeth are adapted for crushing, in the male the canine teeth can form tusks, which grow continuously and are sharpened by constantly being ground against each other. There are four hoofed toes on each foot, or trotter, most domestic pigs have rather a sparse hair covering on their skin, although woolly-coated breeds, such as the Mangalitsa, are raised. Pigs possess both apocrine and eccrine sweat glands, although the latter appear limited to the snout and dorsonasal areas, pigs, however, like other hairless mammals, do not use thermal sweat glands in cooling. Pigs are also less able than many other mammals to dissipate heat from wet mucous membranes in the mouth through panting and their thermoneutral zone is 16 to 22 °C. Pigs are one of four known species which possess mutations in the nicotinic acetylcholine receptor that protect against snake venom. Mongooses, honey badgers, hedgehogs, and pigs all have modifications to the receptor pocket which prevents the snake venom α-neurotoxin from binding and these represent four separate, independent mutations. However, in 1777, Johann Christian Polycarp Erxleben classified the domestic pig as a species from the wild boar. He gave it the name Sus domesticus, which is used by some taxonomists. Remains of pigs have been dated to earlier than 11,400 BC in Cyprus and those animals must have been introduced from the mainland, which suggests domestication in the adjacent mainland by then. There was also a separate domestication in China which took place about 8000 years ago, DNA evidence from sub-fossil remains of teeth and jawbones of Neolithic pigs shows that the first domestic pigs in Europe had been brought from the Near East
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