Purebreds, also called purebreeds, are cultivated varieties or cultivars of an animal species, achieved through the process of selective breeding. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. This article focuses on selective breeding in domesticated animals When the lineage of a purebred animal is recorded, that animal is said to be pedigreed. A Pedigree Chart is a chart which tells someone all of the known Phenotypes for an Organism and its Ancestors most commonly humans show Dogs

The term purebred is occasionally confused with the proper noun Thoroughbred, which refers exclusively to a specific breed of horse, one of the first breeds for which a written national stud book was created since the 18th century. The Thoroughbred is a horse breed Meyers b12 s0947bjpg|thumb|Heavy or draft horse breeds]] This page is a list of Horse and Pony breeds and also includes terms used to describe types of horses that are not The horse ( Equus caballus) is a hoofed ( Ungulate) Mammal, one of eight living species of the family Equidae. A breed registry, also known as a stud book or register, in Animal husbandry and the Hobby of Animal fancy, is an official list of The 18th century lasted from 1701 to 1800 in the Gregorian calendar, in accordance with the Anno Domini / Common Era numbering system Thus a purebred animal should never be called a "thoroughbred" unless the animal actually is a registered Thoroughbred horse.

Contents 1 True breeding 2 Pedigrees 3 Purebreds by animal 3.1 Purebred dogs 3.2 Purebred horses 3.3 Purebred cats 3.4 Purebred livestock 4 Wild species, Landraces, and Purebred species 5 See also 6 References

True breeding

In the world of animal breeding, to "breed true" means that specimens of an animal breed will breed true-to-type when mated like-to like; that is, that the progeny of any two individuals in the same breed will show consistent, replicable and predictable characteristics. This article focuses on selective breeding in domesticated animals See Breed (song for the song by Nirvana. See Breed (video game for the video game by Brat Designs A puppy from two purebred dogs of the same breed, for example, will exhibit the traits of its parents, and not the traits of all breeds in the subject breed's ancestry.

However, over time, there are also concerns that breeding from too small a gene pool can lead to inbreeding and the development of negative characteristics or even a collapse of a breed population due to inbreeding depression. Inbreeding is breeding between close Relatives whether plant or animal Inbreeding depression is reduced fitness in a given Population as a result of breeding of related individuals Hence, there is continuing tension within many purebred animal breeds over the question of when a breed may need to allow "outside" blood in for the purpose of improving the overall health and vigor of an animal breed.

Pedigrees

A pedigreed animal is one that has its ancestry recorded. Often this is tracked by a major registry. A breed registry, also known as a stud book or register, in Animal husbandry and the Hobby of Animal fancy, is an official list of The number of generations required varies from breed to breed, but all pedigreed animals have papers from the registering body that attest to their ancestry. The word "pedigree" appeared in the English language in 1410 as "pee de Grewe", "pedegrewe" or "pedegru", each of those words being borrowed to the Middle French "pié de grue", meaning "crane foot". This comes from a visual analogy between the trace of the bird's foot and the three lines used in the English official registers to show the ramifications of a genealogical tree ^[1].

Sometimes the word purebred is used synonymously with pedigreed, but purebred refers to the animal having a known ancestry, and pedigree refers to the written record of breeding. Not all purebred animals have their lineage in written form. For example, until the 20th century, the Bedouin people of the Arabian peninsula only recorded the ancestry of their Arabian horses via an oral tradition, supported by the swearing of religiously-based oaths as to the asil or "pure" breeding of the animal. The Bedouin, (from the Arabic (ar بدوي pl badū) are a desert-dwelling Arab Nomadic pastoralist, or previously The Arabian Peninsula (in Arabic: شبه الجزيرة العربية šibh al-jazīra al-ʻarabīya or جزيرة العرب jazīrat al-ʻarab) The Arabian horse is a breed of Horse with a reputation for Intelligence, spirit and stamina Oral tradition, oral culture and oral lore is a way for a society to transmit history, literature, law and other Knowledges "Aseel" redirects here For the statistical term see ASEEL. Conversely, some animals may have a recorded pedigree or even a registry, but not be considered "purebred. " Today the modern Anglo-Arabian horse, a cross of Thoroughbred and Arabian bloodlines, is considered such a case. The Thoroughbred is a horse breed The Arabian horse is a breed of Horse with a reputation for Intelligence, spirit and stamina

Purebreds by animal

Purebred dogs

Main article: Purebred (dog)

A purebred dog is a dog of a modern breed of dog, with written documentation showing the individual purebred dog's descent from its breed's foundation stock. Purebred dog refers to a dog of a modern Dog breed that closely resembles other dogs of the same breed with ancestry documented in a stud book and registered Dog breeds are groups of closely related and visibly similar domestic Dogs with characteristic traits that are selected and maintained by humans bred from a known foundation Foundation bloodstock or foundation stock are Horses that are the progenitor or foundation of a new horse breed or a given bloodline within a breed In dogs, the term breed is used two ways: loosely, to refer to dog types or landraces of dog (also called natural breeds or ancient breeds); or more precisely, to refer to modern breeds of dog, which are documented so as to be known to be descended from specific ancestors, that closely resemble others of their breed in appearance, movement, way of working and other characters; and that reproduce with offspring closely resembling each other and their parents. Dog types are broad categories of dogs based on function dog types are not identical to modern ''dog breeds'' but dogs identified primarily by specific Landrace refers to domesticated animals or plants adapted to the natural and cultural environment in which they live (or originated and in some cases work they often develop ^[2] Purebred dogs are breeds in the second sense.

New breeds of dog are constantly being created, and there are many websites for new breed associations and breed clubs offering legitimate registrations for new or rare breeds. When dogs of a new breed are "visiblily similar in most characteristics" and have reliable documented descent from a "known and designated foundation stock"^[2] they can then be considered members of a breed, and, if an individual dog is documented and registered, it can be called purebred.

Purebred horses

According to the "Four Foundations" theory, the evolution of the horse ultimately produced horses of four basic body types, adapted to different environments. The evolution of the horse involves the gradual development of the modern Horse from the fox-sized forest-dwelling Hyracotherium The horse ( Equus caballus) is a hoofed ( Ungulate) Mammal, one of eight living species of the family Equidae. Beginning with the may have been bred true to original type by humans, though emphasizing certain inherent traits (such as a good temperament, suitable to training by humans) to a greater degree than others. In other cases, horses of different body types were cross bred until a desired characteristic was achieved and bred true. A crossbreed or crossbred usually refers to an animal with Purebred parents of two different breeds varieties or populations

Written and oral histories of various animals or pedigrees of certain types of horses have been kept throughout history, though breed registry stud books trace only to about the 13th century, at least in Europe, when pedigrees were tracked in writing, and the practice of declaring a type of horse to be a breed or a purebred became more widespread. A breed registry, also known as a stud book or register, in Animal husbandry and the Hobby of Animal fancy, is an official list of

Certain horse breeds, such as the Andalusian horse and the Arabian horse, are claimed by aficionados of the respective breeds to be ancient, near-pure descendants from one or the other of the original four wild prototypes, though absent a full mapping of the horse genome and other DNA research, such claims are difficult to prove or disprove. Meyers b12 s0947bjpg|thumb|Heavy or draft horse breeds]] This page is a list of Horse and Pony breeds and also includes terms used to describe types of horses that are not The Arabian horse is a breed of Horse with a reputation for Intelligence, spirit and stamina Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known

Purebred cats

A cat whose ancestry is formally registered is called a purebred cat, or a pedigreed cat. Genealogy (from Greek: el γενεά el-Latn genea, "descent" and el λόγος el-Latn logos, "knowledge" is the study of A cat breed is an infrasubspecific rank for the classification of domestic cats A cat is considered to be of a certain cat Breed if it is true breeding A purebred cat is one whose ancestry contains only individuals of the same breed. A pedigreed cat is one whose ancestry is recorded, but may have ancestors of different breeds.

The list of cat breeds is quite large: most cat registries actually recognize between 30 and 40 breeds of cats, and several more are in development, with one or more new breeds being recognized each year on average, having distinct features and heritage. The following is a list of Cat breeds recognized by various cat registries. Owners and breeders compete in cat shows to see whose animal bears the closest resemblance to the "ideal" definition, based on breed type and the breed standard for each breed. Breed type is the whole of the characteristics that are typical of a breed of domesticated animals. A breed standard (also called bench standard) in Animal fancy and Animal husbandry is a set of guidelines which is used to ensure that the animals ^[3]

Because of common crossbreeding in populated areas, many cats are simply identified as belonging to the homogeneous breeds of domestic longhair and domestic shorthair, depending on their type of fur. A domestic shorthaired cat (DSH is a Cat fancy term used to describe a shorthaired Cat that does not have a Pedigree or belong to a recognized Cat

Some original cat breeds that have a distinct phenotype that is the main type occurring naturally as the dominant domesticated cat type in their region of origin are sometimes considered as subspecies and in the past received names as such, although this is no longer supported by feline biologists. ^[4] Some of these cat breeds (with their invalid scientific names for historical interest) are:

• F. catus anura - the Manx
• F. catus siamensis - the Siamese
• F. catus cartusenensis - the Chartreux
• F. catus angorensis - the Turkish Angora

Purebred livestock

Most domesticated farm animals also have true-breeding breeds and breed registries, particularly cattle, sheep, goats, rabbits, and pigs. A farm is an area of land including various structures devoted primarily to the practice of producing and managing food ( Produce, Grains, or Livestock A breed registry, also known as a stud book or register, in Animal husbandry and the Hobby of Animal fancy, is an official list of Cattle, colloquially referred to as cows, are domesticated Ungulates a member of the Subfamily Bovinae of the family The domestic goat ( Capra aegagrus hircus) is a subspecies of goat Domesticated from the Wild goat of Southwest Asia and Eastern Europe Rabbits are small Mammals in the family Leporidae of the order Lagomorpha, found in several parts of the world Pigs, also called hogs or' swine', are Ungulates which have been domesticated as sources of food leather and similar products since ancient times While animals bred strictly for market sale are not always purebreds, or if purebred may not be registered, most livestock producers value the presence of purebred genetic stock for the consistency of traits such animals provide. It is common for a farm's male breeding stock in particular to be of purebred, pedigreed lines.

Wild species, Landraces, and Purebred species

See also: Genetic pollution and Landrace

Breeders of purebred domesticated species discourage crossbreeding with wild species, unless a deliberate decision is made to incorporate a trait of a wild ancestor back into a given breed or strain. Genetic pollution is undesirable Gene flow into wild populations Landrace refers to domesticated animals or plants adapted to the natural and cultural environment in which they live (or originated and in some cases work they often develop Domestication (from Latin domesticus) refers to the process whereby a Population of Animals A crossbreed or crossbred usually refers to an animal with Purebred parents of two different breeds varieties or populations Wild populations of animals and plants have evolved naturally over millions of years through a process of Natural selection in contrast to human controlled Selective breeding or Artificial selection for desirable traits from the human point of view. Natural selection is the process by which favorable Heritable traits become more common in successive Generations of a Population of This article focuses on selective breeding in domesticated animals Artificial selection is the intentional breeding for certain traits or combinations of traits over others and is synonymous with " Selective breeding " Normally, these two methods of reproduction operate independently of one another. However, an intermediate form of selective breeding, wherein animals or plants are bred by humans, but with an eye to adaptation to natural region-specific conditions and an acceptance of natural selection to weed out undesirable traits, created many ancient domesticated breeds or types now known as landraces. Landrace refers to domesticated animals or plants adapted to the natural and cultural environment in which they live (or originated and in some cases work they often develop

Many times, domesticated species live in or near areas which also still hold naturally evolved, region-specific wild ancestor species and subspecies. Domestication (from Latin domesticus) refers to the process whereby a Population of Animals In some cases, a domesticated species of plant or animal may become feral, living wild. A feral organism is one that has escaped from Domestication and returned partly or wholly to its wild state Other times, a wild species will come into an area inhabited by a domesticated species. Some of these situations lead to the creation of hybridized plants or animals, a cross between the native species and a domesticated one. This type of crossbreeding, termed genetic pollution by those who are concerned about preserving the genetic base of the wild species, has become a major concern. Genetic pollution is undesirable Gene flow into wild populations Hybridization is also a concern to the breeders of purebred species as well, particularly if the gene pool is small and if such crossbreeding or hybridization threatens the genetic base of the domesticated purebred population.

The concern with genetic pollution of a wild population is that hybridized animals and plants may not be as genetically strong as naturally evolved region specific wild ancestors wildlife which can survive without human husbandry and have high immunity to natural diseases. Wildlife includes all non-domesticated plants animals and other organisms Animal husbandry, also called Animal science, stockbreeding or simple husbandry, is the agricultural practice of breeding The concern of purebred breeders with wildlife hybridizing a domesticated species is that it can coarsen or degrade the specific qualities of a breed developed for a specific purpose, sometimes over many generations. Thus, both purebred breeders and wildlife biologists share a common interest in preventing accidental hybridization.

See also

• Breed (includes lists of animal breeds)
• Breed registry
• Cat breed
• Closed stud book
• Consanguinity
• Crossbreeding
• Dog breed
• Dog breeding
• Dog hybrids and crossbreeds
• Endogamy
• Horse breeding
• Inbreeding
• Mixed-breed dog
• Open stud book
• Purebred (dog)

References

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