Search results
Results from the WOW.Com Content Network
The female poultry reproductive tract consists of the ovary, infundibulum, magnum, isthmus, shell gland, vagina, and cloaca. [27] Meanwhile, the male chicken and turkeys reproductive tract consists of the testis, ductus deferens, ejaculatory duct, and cloaca. [27] In ducks the male anatomy is slightly different due to the presence of a penis. [28]
The most common reproductive strategy for fish is known as oviparity, in which the female lays undeveloped eggs that are externally fertilized by a male. Typically large numbers of eggs are laid at one time (an adult female cod can produce 4–6 million eggs in one spawning) and the eggs are then left to develop without parental care.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
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 .
Different taxa show different cellular and acellular envelopes englobing the vitelline membrane. [2] [5] Fertilization is the fusion of gametes to produce a new organism. In animals, the process involves a sperm fusing with an ovum, which eventually leads to the development of an embryo. Depending on the animal species, the process can occur ...
Gizzard of a chicken. The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (birds and other dinosaurs, crocodiles, alligators, pterosaurs), earthworms, some gastropods, some fish, and some crustaceans.
Spaghetti meat chicken has been shown to have less protein and more fat than unaffected poultry. Some studies have also found that affected chickens have a higher rate of "drip loss," meaning more ...
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]