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Brooding
Broodiness is the action or behavioral tendency to sit on a clutch of eggs to Egg incubation, incubate them, often requiring the non-expression of many other behaviors including feeding and drinking.Homedes Ranquini, J. y Haro-García, F. Zoogenética. 1ra. edición, 1958, (La Habana, 1967 Ed. Revolucionaria) Being broody has been defined as "Being in a state of readiness to brood eggs that is characterized by cessation of laying and by marked changes in behavior and physiology". Broodiness is usually associated with female birds, although males of some bird species become broody and some non-avian animals also show broodiness. In wild birds In wild birds, egg incubation is a normal and essential phase in the process of reproduction, and in many families of birds, e.g. Columbidae, pigeons, the eggs are incubated by both male and female parents. Broodiness in males In all species of Phalaropus, phalaropes, the males become broody rather than the female. The females leave the nest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg Incubation
Egg incubation is the process by which an egg, of oviparous (egg-laying) animals, develops an embryo within the egg, after the egg's formation and ovipositional release. Egg incubation is done under favorable environmental conditions, possibly by brooding and hatching the egg. Multiple and various factors are vital to the incubation of various species of animal. In many species of reptile for example, no fixed temperature is necessary, but the actual temperature determines the sex ratio of the offspring. In birds, the sex of offspring is genetically determined, but in many species a constant and particular temperature is necessary for successful incubation. Especially in poultry, the act of sitting on eggs to incubate them is called brooding. The action or behavioral tendency to sit on a clutch of eggs is also called broodiness, and most egg-laying breeds of poultry have had this behavior selectively bred out of them to increase production. Avian incubation A wide range o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prolactin
Prolactin (PRL), also known as lactotropin and mammotropin, is a protein best known for its role in enabling mammals to produce milk. It is influential in over 300 separate processes in various vertebrates, including humans. Prolactin is secreted from the pituitary gland in response to eating, mating, estrogen treatment, ovulation and nursing. It is secreted heavily in pulses in between these events. Prolactin plays an essential role in metabolism, regulation of the immune system and pancreatic development. Discovered in non-human animals around 1930 by Oscar Riddle and confirmed in humans in 1970 by Henry Friesen, prolactin is a peptide hormone, encoded by the ''PRL'' gene. In mammals, prolactin is associated with milk production; in fish it is thought to be related to the control of water and salt balance. Prolactin also acts in a cytokine-like manner and as an important regulator of the immune system. It has important cell cycle-related functions as a growth-, diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incubating White Tern
The word incubation may refer to: Science and technology * Egg incubation, sitting on or brooding the eggs of birds and other egg-laying animals to hatch them * Incubation (psychology), the process of thinking about a problem subconsciously while being involved in other activities * Incubation period, medical term for the time between being exposed to infection and showing first symptoms * Incubator (culture), a device used to grow and maintain course of cell cultures Arts and entertainment * Incubate (festival), an annual independent culture festival in Tilburg, The Netherlands * '' Incubation: Time Is Running Out'', 1997 turn-based tactics computer game from Blue Byte * "Incubation", song released on the B-side of the Komakino flexi-single in 1980, and on the ''Substance'' (Joy Division album) in 1988 * ''Biohazard 4 Incubate'', a 97-minute DVD detailing the story of ''Resident Evil 4'' Religion and spirituality * Dream incubation, practiced technique of learning to "plant a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battery Cage
Battery cages are a housing system used by factory farms for various animal production methods, but primarily for egg-laying hens. The name arises from the arrangement of rows and columns of identical cages connected, in a unit, as in an artillery battery. Although the term is usually applied to poultry farming, similar cage systems are used for other animals. Battery cages have generated controversy between advocates for animal welfare and industrial producers. Battery cages in practice Robotic cages are the predominant form of housing for laying hens worldwide. They reduce aggression and cannibalism among hens, but are barren, restrict movement, prevent many natural behaviours, and increase rates of osteoporosis. As of 2014, approximately 95 percent of eggs in the United States were produced in battery cages. In the United Kingdom, statistics from the Department for Environment, Food and Rural Affairs (DEFRA) indicate that 50% of eggs produced in the UK throughout 2010 we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geese
A goose (: geese) is a bird of any of several waterfowl species in the family Anatidae. This group comprises the genera '' Anser'' (grey geese and white geese) and ''Branta'' (black geese). Some members of the Tadorninae subfamily (e.g., Egyptian goose, Orinoco goose) are commonly called geese, but are not considered "true geese" taxonomically. More distantly related members of the family Anatidae are swans, most of which are larger than true geese, and ducks, which are smaller. The term "goose" may refer to such bird of either sex, but when paired with "gander", "goose" refers specifically to a female one ("gander" referring to a male). Young birds before fledging are called goslings. The collective noun for a group of geese on the ground is a gaggle; when in flight, they are called a skein, a team, or a wedge; when flying close together, they are called a plump. Etymology The word "goose" is a direct descendant of Proto-Indo-European ''*ǵʰh₂éns''. In Germanic langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turkeys
The turkey is a large bird in the genus ''Meleagris'', native to North America. There are two extant turkey species: the wild turkey (''Meleagris gallopavo'') of eastern and central North America and the ocellated turkey (''Meleagris ocellata'') of the Yucatán Peninsula in Mexico. Males of both turkey species have a distinctive fleshy wattle, called a snood, that hangs from the top of the beak. They are among the largest birds in their ranges. As with many large ground-feeding birds (order Galliformes), the male is bigger and much more colorful than the female. The earliest turkeys evolved in North America over 20 million years ago. They share a recent common ancestor with grouse, pheasants, and other fowl. The wild turkey species is the ancestor of the domestic turkey, which was domesticated approximately 2,000 years ago by indigenous peoples. It was this domesticated turkey that later reached Eurasia, during the Columbian exchange. Taxonomy The genus ''Meleagris'' wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phasianus Colchicus
The common pheasant (''Phasianus colchicus''), ring-necked pheasant, or blue-headed pheasant, is a bird in the pheasant family (biology), family (Phasianidae). The genus name comes from Latin ''phasianus'' 'pheasant'. The species name ''colchicus'' is Latin for 'of Colchis' (modern day Georgia (country), Georgia), a country on the Black Sea where pheasants became known to Europeans. Although ''Phasianus'' was previously thought to be closely related to the genus ''Gallus'', the genus of junglefowl and domesticated chickens, recent studies show that they are in different subfamilies, having diverged over 20 million years ago. It is native to Asia, where it is widespread, and also the extreme southeast of Europe in the northern foothills of the Caucasus Mountains. It has been widely introduced elsewhere as a game bird. In parts of its range, mainly in places where none of its relatives occur such as in Europe, where it is naturalised, it is simply known as the "pheasant". Ring-nec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quails
Quail is a collective name for several genera of mid-sized birds generally placed in the order Galliformes. The collective noun for a group of quail is a flock, covey, or bevy. Old World quail are placed in the family Phasianidae, and New World quail are placed in the family Odontophoridae. The species of buttonquail are named for their superficial resemblance to quail, and form the family Turnicidae in the order Charadriiformes. The king quail, an Old World quail, often is sold in the pet trade, and within this trade is commonly, though mistakenly, referred to as a "button quail". Many of the common larger species are farm-raised for table food or egg consumption, and are hunted on game farms or in the wild, where they may be released to supplement the wild population, or extend into areas outside their natural range. In 2007, 40 million quail were produced in the United States. New World *Genus '' Callipepla'' ** Scaled quail, (commonly called blue quail) ''Callipepla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silkie
The Silkie, also known as the Silky or Chinese silk chicken, is a Chinese breed of chicken named for its atypically fluffy plumage, which is soft to the touch, like silk or fur. Other unusual qualities include black skin and bones, blue earlobes, and pentadactyly (five toes on each foot) – most chickens have only four. The birds are commonly reared for exhibition in poultry shows, and a number of color varieties have been bred: the Entente Européenne recognises ten plumage colors, the American Poultry Association seven, and the Poultry Club of Great Britain five. there are both bearded and non-bearded forms of most colours. In European countries both bantam and large fowl are recognised, while in the United States only the bantam is listed. Silkie hens show a strong tendency to broodiness, and are commonly used to hatch eggs from other breeds and bird species; as a result of the same tendency, they lay relatively few eggs. History It is unknown exactly where or whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornish (chicken)
The Indian Game is a British breed of game chicken, now reared either for meat or show. It originated in the early nineteenth century in the counties of Cornwall and Devon in south-west England. It is a heavy, muscular bird with an unusually broad breast; the eggs are light brown. In the United States the name was changed in the early twentieth century to Cornish. A white variant, the White Cornish, was developed there at about the same time, and is much used in modern industrial chicken meat production in many parts of the world, either for cross-breeding to produce hybrid broilers, or to produce fast-growing " game hens". History The breed was developed by Sir Walter Gilbert, of Bodmin in Cornwall, in about 1820. It was intended to be a gamecock, but had no aptitude for cockfighting. It is recognised as "Indian Game" in Australia, by the Poultry Club of Great Britain in the United Kingdom, and by the Entente Européenne in Europe. In the United States the name wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cochin Chicken
The Cochin is a breed of large domestic chicken. It derives from large feather-legged chickens brought from China to Europe and North America in the 1840s and 1850s. It is reared principally for exhibition. It was formerly known as the Cochin-China. History Like the Brahma, the Cochin derives from very large feather-legged chickens brought from China to Europe and North America in the 1840s and 1850s. These were at first known as "Shanghai" birds, and later as "Cochin-Chinas". The large size and striking appearance of these birds contributed to a sudden large increase of interest in poultry-breeding in Western countries, sometimes described as "hen fever". The Cochin was included in the first edition of the ''Standard of Excellence in Exhibition Poultry'', prepared by William Bernhardt Tegetmeier for the first Poultry Club of Great Britain in 1865. The colours described are buff, black, cinnamon, grouse, lemon, partridge, silver buff, silver cinnamon, and white. Bantam Coc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Patch
A brood patch, also known as an incubation patch in older literature, is a patch of featherless skin on the underside of birds during the nesting season. Feathers act as inherent insulators and prevent efficient incubation, to which brood patches are the solution. This patch of skin is well supplied with blood vessels at the surface, enabling heat transfer to the eggs when incubating. In most species, the feathers in the region shed automatically, but ducks and geese may pluck and use their feathers to line the nest. Feathers regrow sooner after hatching in precocial birds than for those that have altricial young. Upon settling on a nest, birds will shift in a characteristic side to side manner to ensure full contact of the brood patch with eggs or young. The positions of brood patches can vary. Many have a single brood patch in the middle of the belly, while some shorebirds have one patch on each side of the belly. Gulls and Galliformes may have three brood patches. Pelicans, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
