|
Sex Link
Sex-links are crossbred chickens whose color at hatching is differentiated by sex, thus making chick sexing an easier process. Sex-links come in several varieties. As hybrids of laying or dual-purpose breeds infused with extra vigor via heterosis, sex-links can be extremely good egg-layers which often produce 300 eggs a year or more depending on the quality of care and feed. The color of their eggs vary according to the mix of breeds, and blue-green eggs are possible. Chicks of a single breed that are similarly sex-linked are called autosex chickens, a term developed to differentiate between sex linkage in purebred chickens versus sex linkage in crossbreeds. Sex-link types Many common varieties are known as the black sex-link (also called black stars) and the red sex-link (also called red stars). More specific variety names are common as well. * Black sex-link like "Black rocks" are a cross between unique specially bred hybrid strains of Rhode Island Red rooster (but any non-w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golden Comet
Golden Comet is a cross bred and sex linked chicken gotten from the crossbreeding of a female White Rock or Rhode Island White and a male New Hampshire Red chicken. Overview They can be considered as one of the most successful sex linked chickens, and is arguably one of the most widely kept hybrid hen in the USA. The Hubbard firm was the originator of the Golden Comet Chicken breed. Its other names include Golden Buff, Red Star, Gold Sex-Link and Cinnamon Queen. It is not officially recognized as a breed of chicken by the American Poultry Association because it is a crossbreed. Commercial production It is favored for its egg production. As Golden Comet roosters are not favoured for egg production, any male chicks that hatch are not preserved. They are ideal for small-scale agriculture. They can lay up to 6 eggs per week on average, that is 330 eggs on average, per annum. They can start producing eggs when they are 16 weeks old. Golden Comet hens are productive until they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZW Sex-determination System
The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river prawn, some insects (including butterflies and moths), the schistosome family of flatworms, and some reptiles, e.g. majority of snakes, lacertid lizards and monitors, including Komodo dragons. It is also present in some plants, where it has evolved independently on many occasions, characterizing at least 22% of plants with documented sex chromosomes. The letters Z and W are used to distinguish this system from the XY sex-determination system. In the ZW system, females have a pair of dissimilar ZW chromosomes, and males have two similar ZZ chromosomes. In contrast to the XY sex-determination system and the X0 sex-determination system, where the sperm determines the sex, in the ZW system, the ovum determines the sex of the offspring. Males are the homogametic sex (ZZ), while females are the heterogametic sex (ZW). The Z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pullet
The chicken (''Gallus gallus domesticus'') is a domesticated subspecies of the red junglefowl (''Gallus gallus''), originally native to Southeast Asia. It was first domesticated around 8,000 years ago and is now one of the most common and widespread domesticated animals in the world. Chickens are primarily kept for their meat and eggs, though they are also kept as pets. As of 2023, the global chicken population exceeds 26.5 billion, with more than 50 billion birds produced annually for consumption. Specialized breeds such as broilers and laying hens have been developed for meat and egg production, respectively. A hen bred for laying can produce over 300 eggs per year. Chickens are social animals with complex vocalizations and behaviors, and feature prominently in folklore, religion, and literature across many societies. Their economic importance makes them a central component of global animal husbandry and agriculture. Nomenclature Terms for chickens include: * ''Bid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISA Brown
The ISA Brown is a crossbreed of chicken, with sex-linked coloration. It is thought to have been the result of a complex series of crosses including but not limited to Rhode Island Reds and Rhode Island Whites, and contains gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei ...s from a wide range of breeds, the list of which is a closely guarded secret. It is known for its high egg production of approximately 300 eggs per hen in the first year of laying. History ISA stands for Institut de Sélection Animale, the company which developed the crossbreed in 1978 for egg production as a battery hen. In 1997, the ISA Group merged with Merck & Co., forming Hubbard ISA, so the variety is sometimes called Hubbard Isa Brown. In 2005, Institut de Sélection Animale (ISA) and Hendrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Shaver
The Red Shaver is a sex linked breed of chicken developed in Canada. Pullets are reddish-brown in colour with white underfeathers, while males are white with a few red markings on the feathers. They are a hardy, dual-purpose breed laying brown eggs and dressing out between three and five pounds. They have a reputation of being a quiet breed. Red Shaver chickens are used most frequently in small flocks for small farms. Eggs Red shaver hens can lay from 305 to 315 eggs a year, and are reported to be prolific producers of large brown eggs. One four-year-old Red Shaver chicken in Ottawa was credited with laying an egg with a mass of 143 grams, which is almost three times the size of a standard medium egg (Typically a medium egg is 49 g, a jumbo egg is 70 g).https://www.cbc.ca/news/canada/ottawa/giant-egg-laid-by-ottawa-hen-1.775106. Meat Body weight at 18 weeks is about 3 lbs., and after one year of laying weight between 4 to 5 lbs. See also * List of chicken breeds Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delaware (chicken)
The Delaware is an American breed of chicken with an unusual plumage pattern. It was developed in the state of Delaware in the mid-twentieth century, and was initially known as the Indian River. It was briefly of some importance in the American chicken industry, until it was superseded by the common industrial Cornish Rock cross. In the twenty-first century it is an endangered breed. It may be kept for meat, for eggs or for showing. History In the early twentieth century, the cross of a Barred Plymouth Rock rooster on a New Hampshire hen was a common choice for producing broilers. Occasionally, this mating produces sports with light coloration. George Ellis of Delaware selectively bred these light-colored birds, which led to the creation of the breed in 1940. He first chose to call them ''Indian Rivers'', but later the name was switched to match its state of origin. At the time, the Delmarva Peninsula, where the breed was created, supplied chicken to the entirety of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wyandotte (chicken)
The Wyandotte is an American breed of dual-purpose chicken, raised both for its brown eggs and for its yellow-skinned meat. It was developed in the 1870s, and was named for the indigenous Wyandot people of North America. It has many color variants, and is also kept for showing. It was originally known as the American Sebright. History The Wyandotte was created in the United States in the 1870s by four people, H. M. Doubleday, John Ray, L. Whittaker and Fred Houdlette. The first type was the silver-laced, which was included in the ''American Standard of Perfection'' of the American Poultry Association in 1883; it was taken to Britain at about the same time. It had previously been known as the Sebright Cochin or American Sebright. The origin of the breed is unknown; it is thought derive partly from spangled Hamburgs and dark Brahmas – the Hamburg for the rose comb and the Brahma for the color pattern. The gold-laced variant was produced by breeding silver-laced hens with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Rock (chicken)
The Plymouth Rock is an American breed of domestic chicken. It was first seen in Massachusetts in the nineteenth century and for much of the early twentieth century was the most widely kept chicken breed in the United States. It is a dual-purpose bird, raised both for its meat and for its brown eggs. It is resistant to cold, easy to manage, and a good sitter. History The Plymouth Rock was first shown in Boston in 1849, but was then not seen for another twenty years. In 1869, in Worcester, Massachusetts, one D.A. Upham cross-bred some Black Java hens with a cock with barred plumage and a single comb; he selectively bred for barred plumage and clean (featherless) legs. His birds were shown in Worcester in 1869; the modern Plymouth Rock is thought to derive from them. Other people have been associated with the development of the Plymouth Rock, as have other chicken breeds including the Brahma, the Cochin (both white and buff), the Dominique and the White-faced Black Spani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossbreed
A crossbreed is an organism with purebred parents of two different breeds, varieties, or populations. A domestic animal of unknown ancestry, where the breed status of only one parent or grandparent is known, may also be called a crossbreed though the term "mixed breed" is technically more accurate. Outcrossing is a type of crossbreeding used within a purebred breed to increase the genetic diversity within the breed, particularly when there is a need to avoid inbreeding. In animal breeding, ''crossbreeds'' are crosses within a single species, while ''Hybrid (biology), hybrids'' are crosses between different species. In plant breeding terminology, the term ''crossbreed'' is uncommon, and no universal term is used to distinguish hybridization or crossing within a population from those between populations, or even those between species. Crossbreeding is the process of breeding such an organism. It can be beneficially used to maintain health and viability of organisms. However, irresp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barred Rock
The Plymouth Rock is an American breed of domestic chicken. It was first seen in Massachusetts in the nineteenth century and for much of the early twentieth century was the most widely kept chicken breed in the United States. It is a dual-purpose bird, raised both for its meat and for its brown eggs. It is resistant to cold, easy to manage, and a good sitter. History The Plymouth Rock was first shown in Boston in 1849, but was then not seen for another twenty years. In 1869, in Worcester, Massachusetts, one D.A. Upham cross-bred some Black Java hens with a cock with barred plumage and a single comb; he selectively bred for barred plumage and clean (featherless) legs. His birds were shown in Worcester in 1869; the modern Plymouth Rock is thought to derive from them. Other people have been associated with the development of the Plymouth Rock, as have other chicken breeds including the Brahma, the Cochin (both white and buff), the Dominique and the White-faced Black Spani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhode Island Red
The Rhode Island Red is an American breed of domestic chicken. It is the state bird of Rhode Island. It was developed there and in Massachusetts in the late nineteenth century, by cross-breeding birds of Oriental origin such as the Malay with brown Leghorn birds from Italy. It was a dual-purpose breed, raised both for meat and for eggs; modern strains have been bred for their egg-laying abilities. The traditional non-industrial strains of the Rhode Island Red are listed as "watch" (medium conservation priority, between "recovering" and "threatened") by The Livestock Conservancy. It is a separate breed to the Rhode Island White. History The Rhode Island Red was bred in Rhode Island and Massachusetts in the second half of the nineteenth century, by selective breeding of birds of Oriental origin such as the Cochin, Java, Malay and Shanghai with brown Leghorn birds from Italy. The characteristic deep red plumage derived from the Malay. The State of Rhode Island celebrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
