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Alcelaphine Herpesvirus 2
''Alcelaphine gammaherpesvirus 2'' (AlHV-2) is a species of '' Macavirus'' that is believed to be responsible for causing hartebeest infections of malignant catarrhal fever. Clinical definition Distantly related to human herpes, a virus of this type is composed of a series of double strand sequences of up to 100 gene segments, aligned along a long chromosome surrounded by terminal DNA segments. The effect of the virus is to cause nasal discharge, a high fever, filmed over eyes, failures of the lymphatic system, inflammation of various mucous membranes, and occasionally necrosis of the upper digestive system. Very advanced cases show signs of decay of the nervous system. Occasionally, lesions, arthritis, and digestive problems such as diarrhea have been observed. Cause The agent of MCF in hartebeests, it is related to other variants that strike down antelopes. It was isolated in 1960 and is believed to be carried as reservoirs by goats, sheep, and other domestic anima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macavirus
''Macavirus'' is a genus of viruses in the order ''Herpesvirales'', in the family ''Herpesviridae'', in the subfamily ''Gammaherpesvirinae''. Mammals serve as natural hosts. There are nine species in this genus. Diseases associated with this genus include: inapparent infection in their reservoir hosts (wildebeest for alHV-1 and sheep for ovHV-2), but fatal lymphoproliferative disease when they infect MCF-susceptible hosts, including cattle, deer, bison, water buffalo and pigs. Species The genus consists of the following nine species: * ''Alcelaphine gammaherpesvirus 1'' * ''Alcelaphine gammaherpesvirus 2'' * ''Bovine gammaherpesvirus 6'' * ''Caprine gammaherpesvirus 2'' * ''Hippotragine gammaherpesvirus 1'' * ''Ovine gammaherpesvirus 2'' * ''Suid gammaherpesvirus 3'' * ''Suid gammaherpesvirus 4'' * ''Suid gammaherpesvirus 5 ''Suid gammaherpesvirus 5'' (SuHV-5) is a species of virus in the genus ''Macavirus'', subfamily ''Gammaherpesvirinae'', family ''Herpesviridae'', and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domestic Animals
This page gives a list of domesticated animals, also including a list of animals which are or may be currently undergoing the process of domestication and animals that have an extensive relationship with humans beyond simple predation. This includes species which are semi-domesticated, undomesticated but captive-bred on a commercial scale, or commonly wild-caught, at least occasionally captive-bred, and tameable. In order to be considered fully domesticated, most species have undergone significant genetic, behavioural and morphological changes from their wild ancestors, while others have changed very little from their wild ancestors despite hundreds or thousands of years of potential selective breeding. A number of factors determine how quickly any changes may occur in a species, but there is not always a desire to improve a species from its wild form. Domestication is a gradual process, so there is no precise moment in the history of a given species when it can be considered to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccination
Vaccination is the administration of a vaccine to help the immune system develop immunity from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism. In stimulating the body's adaptive immunity, they help prevent sickness from an infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results. Herd immunity protects those who may be immunocompromised and cannot get a vaccine because even a weakened version would harm them. The effectiveness of vaccination has been widely studied and verified. Vaccination is the most effective method of preventing infectious diseases; widespread immunity due to vaccination is largely responsible for the worldwide eradication of smallpox and the elimination of diseases such as polio and tetanus from much of the world. However, some diseases, such as measles outbreaks in America, have seen rising cases due to relative ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Range
Free range denotes a method of farming husbandry where the animals, for at least part of the day, can roam freely outdoors, rather than being confined in an enclosure for 24 hours each day. On many farms, the outdoors ranging area is fenced, thereby technically making this an enclosure, however, free range systems usually offer the opportunity for the extensive locomotion and sunlight that is otherwise prevented by indoor housing systems. ''Free range'' may apply to meat, eggs or dairy farming. The term is used in two senses that do not overlap completely: as a farmer-centric description of husbandry methods, and as a consumer-centric description of them. There is a diet where the practitioner only eats meat from free-range sources called ethical omnivorism. In ranching, free-range livestock are permitted to roam without being fenced in, as opposed to intensive animal farming practices such as the concentrated animal feeding operation. In many agriculture-based economies, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Nervous System
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord. The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts. It is a structure composed of nervous tissue positioned along the rostral (nose end) to caudal (tail end) axis of the body and may have an enlarged section at the rostral end which is a brain. Only arthropods, cephalopods and vertebrates have a true brain (precursor structures exist in onychophorans, gastropods and lancelets). The rest of this article exclusively discusses the vertebrate central nervous system, which is radically distinct from all other animals. Overview In vertebrates, the brain and spinal cord are both enclosed in the meninges. The meninges provide a barrier to chemicals dissolv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morbidity
A disease is a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not immediately due to any external injury. Diseases are often known to be medical conditions that are associated with specific signs and symptoms. A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies and autoimmune disorders. In humans, ''disease'' is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person affected, or similar problems for those in contact with the person. In this broader sense, it sometimes includes injuries, disabilities, disorders, syndromes, infections, isolated symptoms, deviant behaviors, and atypical variations of structur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incubation Period
Incubation period (also known as the latent period or latency period) is the time elapsed between exposure to a pathogenic organism, a chemical, or radiation, and when symptoms and signs are first apparent. In a typical infectious disease, the incubation period signifies the period taken by the multiplying organism to reach a threshold necessary to produce symptoms in the host. While ''latent'' or ''latency period'' may be synonymous, a distinction is sometimes made whereby the latent period is defined as the time from infection to infectiousness. Which period is shorter depends on the disease. A person may carry disease, such as ''Streptococcus'' in the throat, without exhibiting any symptoms. Depending on the disease, the person may or may not be contagious during the incubation period. During latency, an infection is subclinical. With respect to viral infections, in incubation the virus is replicating. This is in contrast to viral latency, a form of dormancy in which the v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildlife
Wildlife refers to domestication, undomesticated animal species (biology), species, but has come to include all organisms that grow or live wilderness, wild in an area without being species, introduced by humans. Wildlife was also synonymous to game (hunting), game: those birds and mammals that were trophy hunting, hunted for sport. Wildlife can be found in all ecosystems. Deserts, plains, grasslands, woodlands, forests, and other areas, including the most developed urban areas, all have distinct forms of wildlife. While the term in popular culture usually refers to animals that are untouched by human factors, most scientists agree that much wildlife is human impact on the environment, affected by human behavior, human activities. Some wildlife threaten human safety, health, property, and quality of life. However, many wild animals, even the dangerous ones, have value to human beings. This value might be economic, educational, or emotional in nature. Humans have historically t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topi
''Damaliscus lunatus jimela'' is a subspecies of topi, and is usually just called a topi. It is a highly social and fast type of antelope found in the savannas, semi-deserts, and floodplains of sub-Saharan Africa. Names The word ''tope'' or ''topi'' is Swahili, and was first recorded in the 1880s by the German explorer Gustav Fischer to refer to the local topi population in the Lamu island region of Kenya; this population is now designated as ''Damaliscus lunatus topi''. Contemporaneously, in English, sportsmen referred to the animal as a Senegal hartebeest, as it was considered the same species as what is now recognised as ''D. lunatus korrigum''. Other names recorded in East Africa by various German explorers were in Kisukuma and in Kinyamwezi. The Luganda name was according to Neumann, or according to Lugard. By the turn of the 19th century this antelope was called a topi by most in English. Writing in 1908, Richard Lydekker complains that it would have so much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcelaphinae
The subfamily Alcelaphinae or tribe Alcelaphini of the family Bovidae contains wildebeest, hartebeest, bonteboks, and several similar species. Depending on the classification, there are 6–10 species placed in four genera, although ''Beatragus'' is sometimes considered a subgenus of ''Damaliscus'', and ''Sigmoceros'' for the Lichtenstein's hartebeest. Subfamily Alcelaphinae * Genus ''Beatragus'' ** Hirola, ''Beatragus hunteri'' * Genus ''Damaliscus'' ** Tsessebe, ''D. lunatus'' *** Korrigum, ''D. lunatus korrigum'' *** Topi, ''D. lunatus jimela'' *** Coastal topi, ''D. lunatus topi'' ** Bontebok, ''D. pygargus'' *** Bontebok (subspecies), ''D. p. pygargus'' *** Blesbok, ''D. p. phillipsi'' * Genus '' Alcelaphus'' ** Hartebeest, ''A. buselaphus'' *** Bubal hartebeest, †''A. b. buselaphus'' *** Coke's hartebeest, ''A. b. cokii'' *** Lelwel hartebeest, ''A. b. lelwel'' *** Western hartebeest, ''A. b. major'' *** Swayne's hartebeest, ''A. b. swaynei'' *** Tora hartebees ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Addax
The addax (''Addax nasomaculatus''), also known as the white antelope and the screwhorn antelope, is an antelope native to the Sahara Desert. The only member of the genus ''Addax'', it was first described scientifically by Henri de Blainville in 1816. As suggested by its alternative name, the pale antelope has long, twisted horns – typically in females and in males. Males stand from at the shoulder, with females at . They are sexually dimorphic, as the females are smaller than the males. The colour of the coat depends on the season – in the winter, it is greyish-brown with white hindquarters and legs, and long, brown hair on the head, neck, and shoulders; in the summer, the coat turns almost completely white or sandy blonde. The addax mainly eats grasses and leaves of any available shrubs, leguminous herbs and bushes. They are well-adapted to exist in their desert habitat, as they can live without water for long periods of time. Addax form herds of five to 20 members, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Evidence
Direct evidence supports the truth of an assertion (in criminal law, an assertion of guilt or of innocence) directly, i.e., without an intervening inference. A witness relates what they directly experienced, usually by sight or hearing, but also possibly through any sense including smell, touch or pain.''State v. Famber'', 214 S.W.2d 40 (Mo. 1947). Circumstantial evidence, by contrast, consists of a fact or set of facts which, if proven, will support the creation of an inference that the matter asserted is true. For example, a witness who testifies that they saw the defendant shoot a victim gives direct evidence. A witness who testifies that they saw the defendant fleeing the scene of the crime, or a forensics expert who says that ballistics proves that the defendant's gun shot the bullet that killed the victim, both give circumstantial evidence from which the defendant's guilt may be inferred. See also *Hearsay *In flagrante delicto *Smoking gun *Digital evidence In evidenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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