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Illustration of thirty-nine varieties of chicken (and one Guinea Fowl) . There are hundreds of chicken breeds in existence. [1] Domesticated for thousands of years, distinguishable breeds of chicken have been present since the combined factors of geographical isolation and selection for desired characteristics created regional types with distinct physical and behavioral traits passed on to ...
This is a list of chicken breeds usually considered to originate in Canada and the United States. [ 1 ] [ 2 ] Some may have complex or obscure histories, so inclusion here does not necessarily imply that a breed is predominantly or exclusively from those countries.
The National Animal Identification System covers most livestock species, including cattle, poultry, horses, donkeys, mules, sheep, goats and swine, as well as bison, deer, elk, llamas, alpacas and even some fish species, under the heading of aquaculture. Household pets such as cats and dogs are not included. [8]
Data from DAD-IS is used for reporting on the global status and trends of animal genetic resources, including the data for indicators 2.5.1b (number of animal genetic resources for food and agriculture secured in either medium- or long-term conservation facilities) [4] and 2.5.2 (proportion of local breeds classified as being at risk of ...
List of chicken breeds. List of German chicken breeds; List of French chicken breeds; List of Italian chicken breeds; List of Spanish chicken breeds; Chicken breeds recognized by the American Poultry Association; List of true bantam chicken breeds; List of duck breeds; List of turkey breeds; List of goose breeds; List of pigeon breeds
PLF tracks large animals, such as cows, "per animal", but smaller animals, such as poultry, "per flock", wherein the whole flock in a house is treated as one animal. Tracking "per flock" is widely used in broilers. PLF technologies include cameras, microphones, and other sensors for tracking livestock, as well as accompanying computer software.
The authors found that "a small but growing number of studies sought to develop automated species identification systems based on morphological characters". An overview of 20 studies analyzing species' structures, such as cells, pollen, wings, and genitalia, shows identification success rates between 40% and 100% on training sets with 1 to 72 ...
The term also includes waterfowls of the family Anatidae (ducks and geese) but does not include wild birds hunted for food known as game or quarry. Recent genomic studies involving the four extant junglefowl species reveals that the domestication of chicken, the most populous poultry species, occurred around 8,000 years ago in Southeast Asia. [3]