Livestock are domesticated animals intentionally reared in an agricultural setting to make produce such as food or fibre, or for their labour. Livestock include pigs, cattle, goats, deer, sheep, yaks and poultry. The type of livestock reared varies worldwide and depends on factors such as climate, consumer demand, native animals, local traditions, and land type.
Livestock may be raised for subsistence food or for profit. Raising animals (animal husbandry) is an important component of modern agriculture. It has been practiced in many societies, since the transition to farming from hunter-gather lifestyles.
Animal-rearing has its origins in the transition of societies to settled farming communities rather than hunter-gather lifestyles. Animals are ‘domesticated’ when their breeding and living conditions are controlled by humans. Over time, the collective behaviour, life cycle, and physiology of livestock have changed radically. Many modern farm animals are unsuited to life in the wild. Goats, sheep, and pig were domesticated around 8000BC in Asia. The earliest evidence of horse domestication dates to around 4000 BC.
Domesticated animals such as include pigs, cows, goats, deer, sheep, donkeys or mules, horses, yaks and chickens are certainly livestock. In addition, camels, llamas, emus, ostriches may be intentionally reared and be ‘livestock’. This definition includes mammals and birds.
On a broader view, ‘livestock’ could incorporate the intentional rearing of butterflies and honey bees. **" target="_blank" >*" target="_blank" >[http://www.nhb.org/news/2000/july2000.html. Taking ‘livestock’ to mean ‘domesticated animal’ could include aquaculture, including fish, mollusks, shrimp or other water-borne invertebrates.
By contrast, on a very narrow view, ‘livestock’ refers to red meat animals: cattle and lamb.
This article considers ‘livestock’ based on the middle view. The following table summarises types of livestock.
The economic value of livestock includes:
During the history of animal husbandry many secondary products have arisen in an attempt to increase carcass utilization and reduce waste. For example, animal offal and non-edible parts may be transformed into products such as pet food and fertilizer. In the past such waste products were sometimes also fed to livestock as well. However, intra-species recycling poses a disease risk, threatening animal and even human health (see bovine spongiform encephalopathy (BSE), scrapie and prion). Due primarily to BSE (mad cow disease), feeding animal scraps to animals has been banned in many countries, at least in regards to ruminants.
Farming practices vary dramatically world-wide and between types of animals.
Livestock are generally kept in an enclosure, are fed by access to natural or human-provided food and are intentionally bred.
The type of ‘enclosure’ may vary from a small crate or to a large fenced pasture. The type of feed may vary from natural growing grass, to highly sophisticated processed feed. Animals are usually intentionally bred through artificial insemination or through supervised mating.
Indoor production systems are generally used only for pigs and poultry, as well as for veal cattle. Indoor animals are generally farmed intensively, as large space requirements would make indoor farming unprofitable and impossible. However, indoor farming systems are controversial due to: the waste they produce, odour problems, the potential for groundwater contamination and animal welfare concerns. For further discussion on intensively farmed livestock, see factory farming, and intensive pig farming for an illustration.
Other livestock are farmed outside, although the size of enclosure and level of supervision may vary. In large open ranges animals may be only occasionally collected in "round-ups" or "musters". Herding dogs such as sheep dogs and cattle dogs may be used for mustering as are cowboys, musterers and jackaroos on horseback or in helicopters. Since the advent of barbed wire (in the 1870s) and Electric fence technology, fencing pastures has become much more feasible and pasture management simplified. In some cases very large numbers of animals may be kept in indoor or outdoor feeding operations (on feedlots), where the animals' feed is processed, offsite or onsite, and stored onsite then fed to the animals.
Modern farming techniques seek to minimize human involvement, increase yield, and improve animal health. Economics, quality and consumer safety all play a role in how animals are raised. Drug use and feed supplements (or even feed type) may be regulated, or prohibited, to ensure yield is not increased at the expense of consumer health, safety or animal welfare. Practices vary around the world, for example growth hormone use is permitted in the United States but not in the European Union or in countries selling meat/produce in the EU such as Australia and New Zealand. Livestock may be branded, marked, or tagged to denote ownership or for inventory, breeding, health management, product identification and tracing, or other purposes.
Animal diseases may be tolerated; reduced through animal husbandry; or reduced through antibiotics and vaccines. In developing countries animal diseases are tolerated in animal husbandry, resulting in considerably reduced productivity, especially given the low health-status of many developing country herds. Gains in productivity through disease management is often a first step taken in implementing an agriculture policy.
Disease management can be achieved through changes in animal husbandry. These measures may aim to control spread by: controlling animal mixing, controlling entry to farm lots and the use of protective clothing, and quarantining sick animals. Disease management may be controlled by the use of vaccines and antibiotics. Antibiotics may also be used as a growth-promotant. The issue of antibiotic resistance has limited the practices of preventative dosing such as antibiotic-laced feed.
Countries will often require the use of veterinary certificates are often required before transporting, selling or showing animals. Disease-free areas are often rigorously enforced, and may be notified to the OIE.
Animal Welfare is the viewpoint that animals under human care should be treated in such a way that they do not suffer unnecessarily. What is ‘unnecessary’ suffering may vary. Generally though, the animal welfare perspective is based on an interpretation of scientific research on farming practices.
By contrast, Animal rights is the viewpoint that using animals for human benefit is, by its nature, generally exploitation regardless of the farming practice used. It is a position based on anthropomorphism, in which an individual seeks to place themselves in the position of an animal. Animal rights activists would generally be vegan or vegetarian, whereas it is consistent with the animal welfare perspective to eat meat depending on production processes.
Animal welfare groups generally seek to generate public discussion on livestock rearing practices and secure greater regulation and scrutiny of livestock industry practices. Animal rights groups usually seek the abolition of livestock farming, although some groups may recognise the necessity of achieving more stringent regulation first. Animal welfare groups, such as the RSPCA, are often – in first world countries - given a voice at governmental level in the development of policy. Animal rights groups find it harder to find methods of input, and may go further and advocate civil disobedience or violence.
Animal husbandry practices that have led to legislation in some countries and that may be the subject of current campaigns
Most environmental impacts can be eliminated or lessened by regulating the numbers of animals in a given area and by other animal husbandry techniques.
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Livestock | Animal liberation movement
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