Misplaced Pages

#631368

72-418: The district lies between the forest steppe and taiga zones. It stretches for 124 kilometers (77 mi) from west to east and for 120 kilometers (75 mi) from north to south. The district was founded on April 4, 1924. Abansky District is characterized by a diversity of its population. Many people voluntarily migrated to this area, but some were exiled here as well. During the 18th–19th centuries,

144-441: A belt of forest steppes across northern Eurasia from the eastern lowlands of Europe to eastern Siberia in northeast Asia . It forms transition ecoregions between the temperate grasslands and temperate broadleaf and mixed forests biomes . Much of Russia belongs to the forest steppe zone, stretches from Central Russia , across Volga , Ural , Siberian and Far East Russia . In upper North America another example of

216-504: A Farm " describes a farmer named MacDonald and the various animals he keeps, celebrating the noises they each make. Many urban children experience animal husbandry for the first time at a petting farm ; in Britain, some five million people a year visit a farm of some kind. This presents some risk of infection , especially if children handle animals and then fail to wash their hands ; a strain of E. coli infected 93 people who had visited

288-446: A fertiliser, returning minerals and organic matter to the soil in a semi-closed organic system. Although all mammals produce milk to nourish their young, the cow is predominantly used throughout the world to produce milk and milk products for human consumption. Other animals used to a lesser extent for this purpose include sheep, goats, camels, buffaloes, yaks, reindeer, horses and donkeys. All these animals have been domesticated over

360-487: A plough to increase production of crops, and drawing a sledge, and later a cart, to bring the produce home from the field. Draught animals were first used about 4,000 BC in the Middle East, increasing agricultural production immeasurably. In southern Asia, the elephant was domesticated by 6,000 BC. Fossilised chicken bones dated to 5040 BC have been found in northeastern China, far from where their wild ancestors lived in

432-562: A significant impact on the world environment. Both production and consumption of animal products have increased rapidly. Since 1950, meat production has tripled, whereas the production of dairy products doubled and that of eggs almost increased fourfold. Meanwhile, meat consumption has nearly doubled worldwide. Developing countries had a surge in meat consumption, particularly of monogastric livestock. Animal husbandry drives climate change, ocean acidification, and biodiversity loss, and kills 60 billion animals annually. It uses between 20 and 33% of

504-816: A small area and given supplementary heating. Litter on the floor absorbs the droppings and the area occupied is expanded as they grow. Feed and water is supplied automatically and the lighting is controlled. The birds may be harvested on several occasions or the whole shed may be cleared at one time. A similar rearing system is usually used for turkeys, which are less hardy than chickens, but they take longer to grow and are often moved on to separate fattening units to finish. Ducks are particularly popular in Asia and Australia and can be killed at seven weeks under commercial conditions. Aquaculture has been defined as "the farming of aquatic organisms including fish, molluscs, crustaceans and aquatic plants and implies some form of intervention in

576-539: A typical broiler chicken at eight weeks old was 4.8 times as heavy as a bird of similar age in 1957, while in the thirty years to 2007, the average milk yield of a dairy cow in the United States nearly doubled. Good husbandry, proper feeding, and hygiene are the main contributors to animal health on the farm, bringing economic benefits through maximised production. When, despite these precautions, animals still become sick, they are treated with veterinary medicines , by

648-550: A week. At the other extreme, in the more developed parts of the world, animals are often intensively managed ; dairy cows may be kept in zero-grazing conditions with all their forage brought to them; beef cattle may be kept in high density feedlots ; pigs may be housed in climate-controlled buildings and never go outdoors; poultry may be reared in barns and kept in cages as laying birds under lighting-controlled conditions. In between these two extremes are semi-intensive, often family-run farms where livestock graze outside for much of

720-566: Is a stub . You can help Misplaced Pages by expanding it . Animal husbandry Animal husbandry is the branch of agriculture concerned with animals that are raised for meat , fibre , milk , or other products. It includes day-to-day care, management, production, nutrition, selective breeding , and the raising of livestock . Husbandry has a long history, starting with the Neolithic Revolution when animals were first domesticated , from around 13,000 BC onwards, predating farming of

792-517: Is a deciduous tree. In China, Korea and Japan however, two generations are normal, and in the tropics, multiple generations are expected. Most production of silk occurs in the Far East, with a synthetic diet being used to rear the silkworms in Japan. Insects form part of the human diet in many cultures. In Thailand, crickets are farmed for this purpose in the north of the country, and palm weevil larvae in

SECTION 10

#1732851864632

864-483: Is destroyed by clearing forests and converting land to grow feed crops and for grazing, while predators and herbivores are frequently targeted because of a perceived threat to livestock profits; for example, animal husbandry causes up to 91% of the deforestation in the Amazon region . In addition, livestock produce greenhouse gases . Cows produce some 570 million cubic metres of methane per day, that accounts for 35 to 40% of

936-427: Is mainly derived from cereals and cereal by-products, fats and oils and sugar-rich foods, while protein may come from fish or meat meal, milk products, legumes and other plant foods, often the by-products of vegetable oil extraction. Pigs and poultry are non-ruminants and unable to digest the cellulose in grass and other forages, so they are fed entirely on cereals and other high-energy foodstuffs. The ingredients for

1008-455: Is managed by farmers with a view to encouraging traits seen as desirable. These include hardiness, fertility, docility, mothering abilities, fast growth rates, low feed consumption per unit of growth, better body proportions, higher yields, and better fibre qualities. Undesirable traits such as health defects and aggressiveness are selected against. Selective breeding has been responsible for large increases in productivity. For example, in 2007,

1080-456: Is no single universally agreed definition of which species are livestock. Widely agreed types of livestock include cattle for beef and dairy, sheep, goats, pigs, and poultry. Various other species are sometimes considered livestock, such as horses, while poultry birds are sometimes excluded. In some parts of the world, livestock includes species such as buffalo, and the South American camelids,

1152-467: Is now frowned on in many countries because of the risk that it may lead to antimicrobial resistance in livestock and in humans. Governments are concerned with zoonoses , diseases that humans may acquire from animals. Wild animal populations may harbour diseases that can affect domestic animals which may acquire them as a result of insufficient biosecurity . An outbreak of Nipah virus in Malaysia in 1999

1224-405: Is one of the top agricultural districts in the krai in terms of production volume. The district specializes in grain crops and their processing. Animal husbandry specializes in pig - and cattle -breeding. The district is rich in timber and coal reserves. Fifty-seven educational facilities are located in the district: Thirty-four per cent of children between ages one and eleven are covered by

1296-461: Is only part of the purpose of keeping an animal which may also be used as a beast of burden or to draw a plough, or for the production of fibre, meat and leather, with the dung being used for fuel or for the improvement of soil fertility . Sheep and goats may be favoured for dairy production in climates and conditions that do not suit dairy cows. Meat , mainly from farmed animals, is a major source of dietary protein and essential nutrients around

1368-582: Is practical and down to earth, and anti-intellectual. Farm animals are widespread in books and songs for children; the reality of animal husbandry is often distorted, softened, or idealized, giving children an almost entirely fictitious account of farm life. The books often depict happy animals free to roam in attractive countryside, a picture completely at odds with the realities of the impersonal, mechanized activities involved in modern intensive farming . Pigs, for example, appear in several of Beatrix Potter 's "little books", as Piglet in A.A. Milne 's Winnie

1440-538: Is seasonal, for example in the temperate summer or tropical rainy season , so some areas of the crop are set aside to be cut and preserved, either as hay (dried grass), or as silage (fermented grass). Other forage crops are also grown and many of these, as well as crop residues, can be ensiled to fill the gap in the nutritional needs of livestock in the lean season. Extensively reared animals may subsist entirely on forage, but more intensively kept livestock will require energy and protein-rich foods in addition. Energy

1512-742: The Chuvash people , while Vorobyovka was populated by the Mordvins . The second wave of migrants rushed in during the late 1920s, as the area was subject to collectivization on a lesser scale than other regions of the country. New migrants usually moved with their fellow countrymen who had already been well-settled in the area and were able to provide the newcomers with support and assistance. The aspiration to "stick together" further strengthened and unified already tight ethnic communities. Even after settling in, people continued to speak their native language and maintained their customs and traditions, passing them on to

SECTION 20

#1732851864632

1584-563: The Middle East . Animal rights activists have objected to long-distance transport of animals; one result was the banning of live exports from New Zealand in 2003. Since the 18th century, the farmer John Bull has represented English national identity , first in John Arbuthnot 's political satires, and soon afterwards in cartoons by James Gillray and others including John Tenniel . He likes food, beer, dogs, horses, and country sports ; he

1656-497: The cellulose in forage and require other high-protein foods. The verb to husband , meaning "to manage carefully", derives from an older meaning of husband , which in the 14th century referred to the ownership and care of a household or farm, but today means the "control or judicious use of resources", and in agriculture, the cultivation of plants or animals. Farmers and ranchers who raise livestock are considered to practice animal husbandry . The domestication of livestock

1728-898: The first crops . During the period of ancient societies like ancient Egypt , cattle , sheep , goats , and pigs were being raised on farms. Major changes took place in the Columbian exchange , when Old World livestock were brought to the New World, and then in the British Agricultural Revolution of the 18th century, when livestock breeds like the Dishley Longhorn cattle and Lincoln Longwool sheep were rapidly improved by agriculturalists, such as Robert Bakewell , to yield more meat, milk, and wool . A wide range of other species, such as horse , water buffalo , llama , rabbit , and guinea pig , are used as livestock in some parts of

1800-470: The nomads in the Middle East, while cattle and pigs were associated with more settled communities. The first wild animal to be domesticated was the dog . Half-wild dogs, perhaps starting with young individuals, may have been tolerated as scavengers and killers of vermin, and being naturally pack hunters , were predisposed to become part of the human pack and join in the hunt. Prey animals, sheep, goats, pigs and cattle, were progressively domesticated early in

1872-462: The 1930s–1940s saw an influx of educated people and intellectuals sent here for political reasons, a significant portion of the exiles of the 1960s consisted of the people genuinely unwilling to work and "re-educated" by means of forcing them to work on forest plots. Five commandants were assigned to Abansky District to oversee the forced labor. The villages of Machino , Tagashi , Noshino , and Beryozovka housed Germans who were deported here after

1944-537: The Mediterranean. In ancient Egypt , cattle were the most important livestock, and sheep, goats, and pigs were also kept; poultry including ducks, geese, and pigeons were captured in nets and bred on farms, where they were force-fed with dough to fatten them. The Nile provided a plentiful source of fish. Honey bees were domesticated from at least the Old Kingdom, providing both honey and wax. In ancient Rome , all

2016-438: The New World for the first time along with wheat, barley, rice and turnips. Selective breeding for desired traits was 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

2088-576: The Pooh stories, and somewhat more darkly (with a hint of animals going to slaughter) as Babe in Dick King-Smith 's The Sheep-Pig , and as Wilbur in E. B. White 's Charlotte's Web . Pigs tend to be "bearers of cheerfulness, good humour and innocence". Many of these books are completely anthropomorphic , dressing farm animals in clothes and having them walk on two legs, live in houses, and perform human activities. The children's song " Old MacDonald Had

2160-528: The Westmoreland bull to create the Dishley Longhorn . The semi-natural, unfertilised pastures formed by traditional agricultural methods in Europe were managed by grazing and mowing. As the ecological impact of this land management strategy is similar to the impact of such natural disturbances as grazing and wildfire , this agricultural system shares many beneficial characteristics with a natural habitat, including

2232-639: The alpaca and llama. Some authorities use much broader definitions to include fish in aquaculture , micro-livestock such as rabbits and rodents like guinea pigs , as well as insects from honey bees to crickets raised for human consumption . Animals are raised for a wide variety of products, principally meat , wool , milk , and eggs , but also including tallow , isinglass and rennet . Animals are also kept for more specialised purposes, such as to produce vaccines and antiserum (containing antibodies ) for medical use. Where fodder or other crops are grown alongside animals, manure can serve as

Abansky District - Misplaced Pages Continue

2304-448: The animal for food was a secondary consideration, and wherever possible its products such as wool, eggs, milk and blood (by the Maasai ) were harvested while the animal was still alive. In the traditional system of transhumance , people and livestock moved seasonally between fixed summer and winter pastures; in montane regions the summer pasture was up in the mountains, the winter pasture in

2376-404: The animals' rations can be grown on the farm or can be bought, in the form of pelleted or cubed, compound foodstuffs specially formulated for the different classes of livestock, their growth stages and their specific nutritional requirements. Vitamins and minerals are added to balance the diet. Farmed fish are usually fed pelleted food. The breeding of farm animals seldom occurs spontaneously but

2448-437: The birds are unable to exhibit their normal behaviours. In the developed world, the majority of the poultry reared for meat is raised indoors in big sheds, with automated equipment under environmentally controlled conditions. Chickens raised in this way are known as broilers, and genetic improvements have meant that they can be grown to slaughter weight within six or seven weeks of hatching. Newly hatched chicks are restricted to

2520-502: The birds can roam as they will but are housed at night for their own protection, through semi-intensive systems where they are housed in barns and have perches, litter and some freedom of movement, to intensive systems where they are kept in cages. The battery cages are arranged in long rows in multiple tiers, with external feeders, drinkers, and egg collection facilities. This is the most labour saving and economical method of egg production but has been criticised on animal welfare grounds as

2592-452: The book, had in 1086 "2 fisheries worth [paying tax of] 7s and 6d [each year] and 20 acres of meadow [for livestock]. Woodland for [feeding] 70 pigs." The improvements of animal husbandry in the medieval period in Europe went hand in hand with other developments. Improvements to the plough allowed the soil to be tilled to a greater depth. Horses took over from oxen as the main providers of traction, new ideas on crop rotation were developed and

2664-479: The centuries, being bred for such desirable characteristics as fecundity, productivity, docility and the ability to thrive under the prevailing conditions. Whereas in the past cattle had multiple functions, modern dairy cow breeding has resulted in specialised Holstein Friesian-type animals that produce large quantities of milk economically. Artificial insemination is widely available to allow farmers to select for

2736-515: The countryside to assist in pollination. Sericulture , the rearing of silkworms, was first adopted by the Chinese during the Shang dynasty . The only species farmed commercially is the domesticated silkmoth . When it spins its cocoon , each larva produces an exceedingly long, slender thread of silk. The larvae feed on mulberry leaves and in Europe, only one generation is normally raised each year as this

2808-456: The end of World War II. The deported Germans were required to register with the local commandant twice a month and were prohibited from leaving their assigned residences. Many Germans were separated from their families, and only in the 1980s they were allowed to leave. Agriculture and forestry , at 55.6%, comprise the largest share of the district's economy, followed by the wholesale and retail trade and auto maintenance (18%). Abansky District

2880-731: The farmer and the veterinarian . In the European Union, when farmers treat their own animals, they are required to follow the guidelines for treatment and to record the treatments given. Animals are susceptible to a number of diseases and conditions that may affect their health. Some, like classical swine fever and scrapie are specific to one type of stock, while others, like foot-and-mouth disease affect all cloven-hoofed animals. Animals living under intensive conditions are prone to internal and external parasites ; increasing numbers of sea lice are affecting farmed salmon in Scotland. Reducing

2952-405: The farms and villages in the area appeared in the first two or three decades of the 20th century. Various ethnic groups tended to stick together for the reasons of common language, traditions, customs, and religious beliefs. This led to the establishment of villages populated mostly by the members of a single ethnic group; for example, Sterlitamak was predominantly Tatar , Vostok was a village of

Abansky District - Misplaced Pages Continue

3024-699: The forest steppe ecotone is the aspen parkland in the central Prairie Provinces , northeastern British Columbia , North Dakota , and Minnesota . It is the transition ecoregion from the Great Plains prairie and steppe temperate grasslands in the south to the Taiga biome forests in the north. In central Asia the forest steppe ecotone is found in ecoregions in the mountains of the Iranian Plateau , in Iran , Afghanistan , and Balochistan . This ecoregion article

3096-444: The growing of crops for winter fodder gained ground. Peas, beans and vetches became common; they increased soil fertility through nitrogen fixation, allowing more livestock to be kept. Exploration and colonisation of North and South America resulted in the introduction into Europe of such crops as maize, potatoes, sweet potatoes and manioc, while the principal Old World livestock – cattle, horses, sheep and goats – were introduced into

3168-524: The history of agriculture. Pigs were domesticated in the Near East between 8,500 and 8000 BC, sheep and goats in or near the Fertile Crescent about 8,500 BC, and cattle from wild aurochs in the areas of modern Turkey and Pakistan around 8,500 BC. A cow was a great advantage to a villager as she produced more milk than her calf needed, and her strength could be put to use as a working animal , pulling

3240-473: The jungles of tropical Asia, but archaeologists believe that the original purpose of domestication was for the sport of cockfighting . Meanwhile, in South America, the llama and the alpaca had been domesticated, probably before 3,000 BC, as beasts of burden and for their wool. Neither was strong enough to pull a plough which limited the development of agriculture in the New World. Horses occur naturally on

3312-530: The livestock known in ancient Egypt were available. In addition, rabbits were domesticated for food by the first century BC. To help flush them out from their burrows, the polecat was domesticated as the ferret , its use described by Pliny the Elder . In northern Europe, agriculture including animal husbandry went into decline when the Roman empire collapsed. Some aspects such as the herding of animals continued throughout

3384-510: The most widely held position in the western world, a form of utilitarianism : that it is morally acceptable for humans to use non-human animals, provided that no unnecessary suffering is caused, and that the benefits to humans outweigh the costs to the livestock. An opposing view is that animals have rights , should not be regarded as property, are not necessary to use, and should never be used by humans. Live export of animals has risen to meet increased global demand for livestock such as in

3456-407: The new generations. However, they also had to master Russian , as it was the language of communication between various ethnic groups and the language of the government. Various ethnic communities lived in peace and friendship, respecting each other's customs and sharing the best practices and experiences. Eventually, over time, the cultures blended together, creating a group which is now described by

3528-501: The overall methane emissions of the planet. Further, livestock production is responsible for 65% of all human-related emissions of nitrous oxide . Since the 18th century, people have become increasingly concerned about the welfare of farm animals . Possible measures of welfare include longevity , behavior , physiology , reproduction , freedom from disease , and freedom from immunosuppression . Standards and laws for animal welfare have been created worldwide, broadly in line with

3600-480: The parasite burdens of livestock results in increased productivity and profitability. Where the condition is serious, governments impose regulations on import and export, on the movement of stock, quarantine restrictions and the reporting of suspected cases. Vaccines are available against certain diseases, and antibiotics are widely used where appropriate. At one time, antibiotics were routinely added to certain compound foodstuffs to promote growth, but this practice

3672-406: The particular traits that suit their circumstances. Whereas in the past cows were kept in small herds on family farms , grazing pastures and being fed hay in winter, nowadays there is a trend towards larger herds, more intensive systems, the feeding of silage and "zero grazing", a system where grass is cut and brought to the cow, which is housed year-round. In many communities, milk production

SECTION 50

#1732851864632

3744-554: The period. By the 11th century, the economy had recovered and the countryside was again productive. The Domesday Book recorded every parcel of land and every animal in England: "there was not one single hide, nor a yard of land, nay, moreover ... not even an ox, nor a cow, nor a swine was there left, that was not set down in [the king's] writ." For example, the royal manor of Earley in Berkshire , one of thousands of villages recorded in

3816-534: The pre-school educational system. There are three hospitals with the total of 211 beds in the district, in addition to 4 clinics. There are on average 14.3 doctors per 10,000 people and 7.7 medical workers per 1,000 people. Medicinal Lake Plakhino (Borovoye) is located in the district. Forest steppe A forest steppe is a temperate-climate ecotone and habitat type composed of grassland interspersed with areas of woodland or forest . Forest steppe primarily occurs in

3888-410: The promotion of biodiversity . This strategy is declining in Europe today due to the intensification of agriculture. The mechanized and chemical methods used are causing biodiversity to decline. Traditionally, animal husbandry was part of the subsistence farmer's way of life, producing not only the food needed by the family but also the fuel, fertiliser, clothing, transport and draught power. Killing

3960-1033: The rearing process to enhance production, such as regular stocking, feeding, protection from predators, etc. Farming also implies individual or corporate ownership of the stock being cultivated." In practice it can take place in the sea or in freshwater, and be extensive or intensive. Whole bays, lakes or ponds may be devoted to aquaculture, or the farmed animal may be retained in cages (fish), artificial reefs , racks or strings (shellfish). Fish and prawns can be cultivated in rice paddies , either arriving naturally or being introduced, and both crops can be harvested together. Fish hatcheries provide larval and juvenile fish, crustaceans and shellfish, for use in aquaculture systems. When large enough these are transferred to growing-on tanks and sold to fish farms to reach harvest size. Some species that are commonly raised in hatcheries include shrimps , prawns , salmon , tilapia , oysters and scallops . Similar facilities can be used to raise species with conservation needs to be released into

4032-495: The region was a common destination for exiled insurgents and revolutionaries, including Poles and the Decembrists . Most, however, migrated here voluntarily in the beginning of the 20th century, after the revolutionary events of 1905 and as a result of the agrarian reforms by Pyotr Stolypin . Migrants typically traveled by rail and arrived in big groups to Kansk . From there, they transported by horses to Aban. The majority of

4104-421: The south. The crickets are kept in pens, boxes or drawers and fed on commercial pelleted poultry food, while the palm weevil larvae live on cabbage palm and sago palm trees, which limits their production to areas where these trees grow. Another delicacy of this region is the bamboo caterpillar , and the best rearing and harvesting techniques in semi-natural habitats are being studied. Animal husbandry has

4176-755: The steppes of Central Asia and their domestication began around 3,000 BC in the Black Sea and Caspian Sea region. Although horses were originally seen as a source of meat, their use as pack animals and for riding followed. Around the same time, the wild ass was being tamed in Egypt. Camels were domesticated soon after this, with the Bactrian camel in Mongolia and the Arabian camel becoming beasts of burden. By 1000 BC, caravans of Arabian camels were linking India with Mesopotamia and

4248-415: The term "Siberians". After World War II , many people exiled here started families; many remained to live and work in the district. In the 1960s, Aban became a destination for people exiled from the big cities under the "Decree of 1961"—people were sent here for their religious beliefs, for drunkenness, and for parasitism . As a result, the social composition of the population changed significantly. While

4320-539: The uplands of the United Kingdom, sheep are turned out on the fells in spring and graze the abundant mountain grasses untended, being brought to lower altitudes late in the year, with supplementary feeding being provided in winter. In rural locations, pigs and poultry can obtain much of their nutrition from scavenging, and in African communities, hens may live for months without being fed, and still produce one or two eggs

4392-603: The valleys. Animals can be kept extensively or intensively. Extensive systems involve animals roaming at will, or under the supervision of a herdsman, often for their protection from predators . Ranching in the Western United States involves large herds of cattle grazing widely over public and private lands. Similar cattle stations are found in South America, Australia and other places with large areas of land and low rainfall. Ranching systems have been used for sheep , deer , ostrich , emu , llama and alpaca . In

SECTION 60

#1732851864632

4464-487: The whole range of available plant material. Cattle, sheep, goats, deer and antelopes are ruminants ; they digest food in two steps, chewing and swallowing in the normal way, and then regurgitating the semidigested cud to chew it again and thus extract the maximum possible food value. The dietary needs of these animals is mostly met by eating grass. Grasses grow from the base of the leaf-blade, enabling it to thrive even when heavily grazed or cut. In many climates grass growth

4536-523: The wild long before that. Fixed comb hives are used in many parts of the world and are made from any locally available material. In more advanced economies, where modern strains of domestic bee have been selected for docility and productiveness, various designs of hive are used which enable the combs to be removed for processing and extraction of honey. Quite apart from the honey and wax they produce, honey bees are important pollinators of crops and wild plants, and in many places hives are transported around

4608-529: The wild, or game fish for restocking waterways. Important aspects of husbandry at these early stages include selection of breeding stock, control of water quality and nutrition. In the wild, there is a massive amount of mortality at the nursery stage; farmers seek to minimise this while at the same time maximising growth rates. Bees have been kept in hives since at least the First Dynasty of Egypt , five thousand years ago, and man had been harvesting honey from

4680-521: The world's fresh water, Livestock, and the production of feed for them, occupy about a third of the Earth's ice-free land. Livestock production contributes to species extinction , desertification , and habitat destruction . and is the primary driver of the Holocene extinction . Some 70% of the agricultural land and 30% of Earth's land surface is involved directly or indirectly in animal husbandry. Habitat

4752-495: The world's meat is produced from animals grazing on open ranges or on enclosed pastures, the other half being produced intensively in various factory-farming systems; these are mostly cows, pigs or poultry, and often reared indoors, typically at high densities. Poultry, kept for their eggs and for their meat, include chickens, turkeys, geese and ducks. The great majority of laying birds used for egg production are chickens. Methods for keeping layers range from free-range systems, where

4824-764: The world, averaging about 8% of man's energy intake. The actual types eaten depend on local preferences, availability, cost and other factors, with cattle, sheep, pigs and goats being the main species involved. Cattle generally produce a single offspring annually which takes more than a year to mature; sheep and goats often have twins and these are ready for slaughter in less than a year; pigs are more prolific, producing more than one litter of up to about 11 piglets each year. Horses, donkeys, deer, buffalo, llamas, alpacas, guanacos and vicunas are farmed for meat in various regions. Some desirable traits of animals raised for meat include fecundity, hardiness, fast growth rate, ease of management and high food conversion efficiency. About half of

4896-1016: The world. Insect farming , as well as aquaculture of fish , molluscs , and crustaceans , is widespread. Modern animal husbandry relies on production systems adapted to the type of land available. Subsistence farming is being superseded by intensive animal farming in the more developed parts of the world, where, for example, beef cattle are kept in high-density feedlots , and thousands of chickens may be raised in broiler houses or batteries . On poorer soil, such as in uplands, animals are often kept more extensively and may be allowed to roam widely, foraging for themselves. Animal agriculture at modern scale drives climate change , ocean acidification , and biodiversity loss . Most livestock are herbivores , except for pigs and chickens which are omnivores . Ruminants like cattle and sheep are adapted to feed on grass; they can forage outdoors or may be fed entirely or in part on rations richer in energy and protein, such as pelleted cereals. Pigs and poultry cannot digest

4968-531: The year, silage or hay is made to cover the times of year when the grass stops growing, and fertiliser, feed, and other inputs are brought onto the farm from outside. Animals used as livestock are predominantly herbivorous , the main exceptions being the pig and the chicken which are omnivorous. The herbivores can be divided into "concentrate selectors" which selectively feed on seeds, fruits and highly nutritious young foliage, "grazers" which mainly feed on grass, and "intermediate feeders" which choose their diet from

5040-417: Was driven by the need to have food on hand when hunting was unproductive. The desirable characteristics of a domestic animal are that it should be useful to the domesticator, should be able to thrive in his or her company, should breed freely, and be easy to tend. Domestication was not a single event, but a process repeated at various periods in different places. Sheep and goats were the animals that accompanied

5112-504: Was improved by Bakewell and in turn the Lincoln was used to develop the subsequent breed, named the New (or Dishley) Leicester. It was hornless and had a square, meaty body with straight top lines. These sheep were exported widely and have contributed to numerous modern breeds. Under his influence, English farmers began to breed cattle for use primarily as beef. Long-horned heifers were crossed with

5184-540: Was traced back to pigs becoming ill after contact with fruit-eating flying foxes , their faeces and urine. The pigs in turn passed the infection to humans. Avian flu H5N1 is present in wild bird populations and can be carried large distances by migrating birds. This virus is easily transmissible to domestic poultry, and to humans living in close proximity with them. Other infectious diseases affecting wild animals, farm animals and humans include rabies , leptospirosis , brucellosis , tuberculosis and trichinosis . There

#631368