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Crossed Beak
Crossed beak, also known as cross beak and scissor beak, is a congenital deformity in birds, particularly poultry, where the upper and lower parts of the beak do not align properly. This condition results in the beak crossing or growing in a way that prevents the bird from closing its beak properly. As a result, affected birds may have difficulty eating and performing other essential activities. Identification Crossed beak is a deformity characterized by a misalignment of the upper and lower beak, with one or both beaks exhibiting lateral deviation from the head's longitudinal axis. The upper beak frequently exhibits horizontal bending at its base, alongside the affected mandible, and the skull, particularly the nasals and orbits, shows asymmetry. Causes Several factors, including incubation temperatures and variations, hereditary elements, developmental mishaps, bone morphogenetic protein 4, and management practices, have been identified as potential associations with or ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crooked Beak
Crooked may refer to: * Crooked Creek (other) * Crooked Island (other) * Crooked Lake (other) * Crooked River (other) * Crooked Harbour, Hong Kong * Crooked Forest, West Pomerania, Poland * Crooked Bridge, a railroad bridge in Saskatchewan, Canada * Crooked Media, an American left-wing political media company * The Crooked Castle, part of the Vilnius Castle Complex, Vilnius, Lithuania * Crooked (album), ''Crooked'' (album), by Kristin Hersh * "Crocked", a 2006 film directed by Art Camacho * "Crooked", a 2008 song by Evil Nine * ''Crooked'', original title of Game (2011 film), ''Game'' (2011 film), a Hindi action thriller * "Crooked (song), Crooked", a 2013 song by G-Dragon * Crooked (novel), ''Crooked'', a 2015 novel by Austin Grossman See also * Crooked I, stage name of American rapper Dominick Wickliffe * Crook (other) {{Disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microphthalmia
Microphthalmia (Greek: , ), also referred as microphthalmos, is a developmental disorder of the eye in which one (unilateral microphthalmia) or both (bilateral microphthalmia) eyes are abnormally small and have anatomic malformations. Microphthalmia is a distinct condition from anophthalmia and nanophthalmia. Although sometimes referred to as 'simple microphthalmia', nanophthalmia is a condition in which the size of the eye is small but no anatomical alterations are present. Presentation Microphthalmia is a congenital disorder in which the globe of the eye is unusually small and structurally disorganized. While the axis of an adult human eye has an average length of about , a diagnosis of microphthalmia generally corresponds to an axial length below in adults. Additionally, the diameter of the cornea is about in affected newborns and in adults with the condition. The presence of a small eye within the orbit can be a normal incidental finding but in many cases it is atypical an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broiler
Breed broiler is any chicken (''Gallus gallus domesticus'') that is bred and raised specifically for meat production. Most commercial broilers reach slaughter weight between four and six weeks of age, although slower growing breeds reach slaughter weight at approximately 14 weeks of age. Typical broilers have white feathers and yellowish skin. Broiler or sometimes broiler-fryer is also used sometimes to refer specifically to younger chickens under , as compared with the larger roasters. Due to extensive breeding selection for rapid early growth and the husbandry used to sustain this, broilers are susceptible to several welfare concerns, particularly skeletal malformation and dysfunction, skin and eye lesions and congestive heart conditions. Management of ventilation, housing, stocking density and in-house procedures must be evaluated regularly to support good welfare of the flock. The breeding stock (broiler-breeders) do grow to maturity but also have their own welfare concerns ... [...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] |
Schweizer (chicken)
The Schweizer, or "Swiss chicken", is a Swiss breed of domestic chicken. It was bred in 1905 in Amriswil, in the canton of Thurgau, in north-east Switzerland. It is kept mainly in German-speaking areas of the country. It is one of three Swiss chicken breeds, the others being the Appenzeller Barthuhn and the Appenzeller Spitzhauben. History The Schweizer breed was created in 1905 by Alfred Weiss in Amriswil, in the canton of Thurgau, in north-east Switzerland. He cross-bred various chicken breeds, mainly white Orpingtons and Wyandottes, to produce a good dual-purpose chicken. It shows some similarity to the Deutsches Reichshuhn, which was developed at about the same time. A breed association was formed in 1910, and a breed standard was drawn up. The breed had a period of success between the First and Second World Wars, but after the war the industrialisation of agriculture and the advent of imported hybrid layer breeds led to rapid decline in its numbers. By 1971 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhode Island Red
The Rhode Island Red is an American breed of domestic chicken. It is the state bird of Rhode Island. It was developed there and in Massachusetts in the late nineteenth century, by cross-breeding birds of Oriental origin such as the Malay with brown Leghorn birds from Italy. It was a dual-purpose breed, raised both for meat and for eggs; modern strains have been bred for their egg-laying abilities. The traditional non-industrial strains of the Rhode Island Red are listed as "watch" (medium conservation priority, between "recovering" and "threatened") by The Livestock Conservancy. It is a separate breed to the Rhode Island White. History The Rhode Island Red was bred in Rhode Island and Massachusetts in the second half of the nineteenth century, by selective breeding of birds of Oriental origin such as the Cochin, Java, Malay and Shanghai with brown Leghorn birds from Italy. The characteristic deep red plumage derived from the Malay. The State of Rhode Island celebrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leghorn Chicken
The Leghorn, or Livornese, is an Italian breed of chicken originating in Tuscany, in central Italy. Birds were exported to North America in about 1828 from the Tuscan port city of Livorno, on the western coast of Italy. They were initially called "Italians", but by 1865 the breed was known as "Leghorn", the traditional anglicisation of "Livorno". The breed was introduced to Britain from the United States in 1870. White Leghorns are commonly used as layer chickens in many countries of the world. Other colour varieties are less common. History The origins of the Leghorn are not clear; it appears to derive from light breeds originating in rural Tuscany. The name comes from Leghorn, the traditional anglicisation of Livorno, the Tuscan port from which the first birds were exported to North America. The date of the earliest exports is variously reported as 1828, "about 1830" and 1852. The birds were initially known as "Italians"; they were first referred to as "Leghorns" in 186 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anophthalmia
Anophthalmia (Greek: ἀνόφθαλμος, "without eye") is the medical term for the absence of one or both eyes. Both the globe and the ocular tissue are missing from the orbit. The absence of the eye will cause a small bony orbit, a constricted mucosal socket, short eyelids, reduced palpebral fissure and malar prominence. Genetic mutations, chromosomal abnormalities, and prenatal environment can all cause anophthalmia. Anophthalmia is an extremely rare disease and is mostly rooted in genetic abnormalities. It can also be associated with other syndromes. Causes ''SOX2'' The most common genetic cause for anophthalmia is mutated SOX2 gene. Sox2 anophthalmia syndrome is caused by a mutation in the Sox2 gene that does not allow it to produce the Sox2 protein that regulates the activity of other genes by binding to certain regions of DNA. Without this Sox2 protein, the activity of genes that is important for the development of the eye is disrupted. Sox2 anophthalmia syndrome is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BMC Veterinary Research
''BMC Veterinary Research'' is a peer-reviewed open access veterinary science and medical journal that launched in 2005 published by BioMed Central. Part of the BMC Series of journals, it has a broad scope covering all aspects of veterinary science and medicine, including the epidemiology, diagnosis, prevention and treatment of medical conditions of domestic, farm and wild animals, as well as the biomedical processes that underlie their health. Abstracting and indexing The journal is abstracted and indexed by PubMed, MEDLINE, CAS, EMBASE, Scopus, Current Contents, CABI and Web of Science. According to the ''Journal Citation Reports'', its 2-year impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... was 2.6 in 2022. References External links * BioMed Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birth Defect
A birth defect is an abnormal condition that is present at birth, regardless of its cause. Birth defects may result in disabilities that may be physical, intellectual, or developmental. The disabilities can range from mild to severe. Birth defects are divided into two main types: structural disorders in which problems are seen with the shape of a body part and functional disorders in which problems exist with how a body part works. Functional disorders include metabolic and degenerative disorders. Some birth defects include both structural and functional disorders. Birth defects may result from genetic or chromosomal disorders, exposure to certain medications or chemicals, or certain infections during pregnancy. Risk factors include folate deficiency, drinking alcohol or smoking during pregnancy, poorly controlled diabetes, and a mother over the age of 35 years old. Many birth defects are believed to involve multiple factors. Birth defects may be visible at birth or dia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appenzeller Barthuhn
The Appenzeller Barthuhn is a Swiss breed of bearded chicken originating in the historical Appenzell region of Switzerland. It is one of two chicken breeds from that area, the other being the Appenzeller Spitzhauben; the only other Swiss breed of chicken is the Schweizer. History The Barthuhn was bred from about 1860 in the historical Appenzell region of Switzerland. It may derive, at least in part, from Italiener, Polverara and Russian Bearded stock. Much of the breeding was done by a man named Züst in the district of Vorderland in the Canton of Appenzell Ausserrhoden, who hoped that a bearded and rose-combed bird might have a better resistance to frost than other chickens. The breed was recognised in 1898. A bantam version was bred in the 1990s by E. Meier of Bottenwil, in the Canton of Aargau. A flock-book was started in 2005; in 2019 the recorded population consisted of 334 hens and 205 cocks. Characteristics The Barthuhn is a light chicken: hens weigh som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratin
Keratin () is one of a family of structural fibrous proteins also known as ''scleroproteins''. It is the key structural material making up Scale (anatomy), scales, hair, Nail (anatomy), nails, feathers, horn (anatomy), horns, claws, Hoof, hooves, and the outer layer of skin in vertebrates. Keratin also protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong mineralization (biology), unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. Excessive keratinization participate in fortification of certain tissues such as in horns of cattle and rhinos, and armadillos' osteoderm. The only other biology, biological matter known to approximate the toughness of keratinized tissue is chitin. Keratin comes in two types: the primitive, softer forms found in all vertebrates and the harder, derived forms fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
