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Gallus gallus domesticus The Leghorn , [ a ] Italian : Livorno or Livornese , is a breed of chicken originating in Tuscany , in central Italy. Birds were first exported to North America in 1828 from the Tuscan port city of Livorno , [ 6 ] on the western coast of Italy.
Gallus gallus domesticus The Brahma is an American breed of chicken . It is believed that it was first bred in the United States from birds imported from the Chinese port of Shanghai , [ 4 ] : 78 and was the principal American meat breed from the 1850s until about 1930.
Gallus gallus domesticus 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 genes from a wide range of breeds, the list of which is a closely guarded secret. [ 1 ]
Gallus gallus domesticus The Norfolk Grey is a utility breed of chicken that originated near the city of Norwich , in Norfolk , England, in around 1910. The breed was originally created by Frederick W Myhill of Hethel, Wymondham under the name Black Maria .
The chicken (Gallus gallus domesticus) is a large and round short-winged bird, domesticated from the red junglefowl of Southeast Asia around 8,000 years ago. Most chickens are raised for food, providing meat and eggs ; others are kept as pets [ 1 ] or for cockfighting .
Gallus gallus domesticus The Barbu d'Anvers , Dutch : Antwerpse baardkriel , is a breed of bantam chicken from Belgium . It is a true bantam, and has no full-sized counterpart; males weigh about 700 grams and hens about 600 g.
The chicken embryo is a unique model that overcomes many limitations to studying the biology of cancer in vivo. The chorioallantoic membrane (CAM), a well-vascularized extra-embryonic tissue located underneath the eggshell, has a successful history as a biological platform for the molecular analysis of cancer including viral oncogenesis, [8] carcinogenesis, [9] tumor xenografting, [1] [10] [11 ...
Galliformes / ˌ ɡ æ l ɪ ˈ f ɔːr m iː z / is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl.Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are often reared by humans for their meat and eggs, or hunted as game birds.