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If the question refers to chicken eggs specifically, the answer is still the egg, but the explanation is more complicated. [ 8] The process by which the chicken arose through the interbreeding and domestication of multiple species of wild jungle fowl is poorly understood, and the point at which this evolving organism became a chicken is a ...
Over 1000 breeds of cattle are recognized worldwide, some of which adapted to the local climate, others which were bred by humans for specialized uses. [ 1] Cattle breeds fall into two main types, which are regarded as either two closely related species, or two subspecies of one species. Bos indicus (or Bos taurus indicus) cattle, commonly ...
Poultry. Poultry ( / ˈpoʊltri /) are domesticated birds kept by humans for the purpose of harvesting animal products such as meat, eggs or feathers. [ 1] The practice of raising poultry is known as poultry farming. These birds are most typically members of the superorder Galloanserae ( fowl ), especially the order Galliformes (which includes ...
The domestication of vertebrates is the mutual relationship between vertebrate animals including birds and mammals, and the humans who have influence on their care and reproduction. [1] Charles Darwin recognized a small number of traits that made domesticated species different from their wild ancestors. He was also the first to recognize the ...
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 ...
American. A Black Java hen; the Java played a role in the creation of some of the American class breeds, such as the Rhode Island Red. The American Class contains thirteen breeds which originated in Canada or the United States. [ 1]: 11 All are heavy breeds, and most lay brown eggs; [ 1]: 11 most are cold-hardy: [ 2] Buckeye. Chantecler. Delaware.
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 ...
The United States women's basketball team nearly watched its Olympic dominance end, but the Americans pulled out a 67-66 victory in the gold medal game against France.. A'ja Wilson had 21 points ...