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Haemonchus Contortus
''Haemonchus contortus'', also known as the barber's pole worm, is a very common parasite and one of the most pathogenic nematodes of ruminants. Adult worms attach to abomasal mucosa and feed on the blood. This parasite is responsible for anemia, oedema, and death of infected sheep and goats, mainly during summer in warm, humid climates. Females may lay over 10,000 eggs a day, which pass from the host animal in the faeces. After hatching from their eggs, ''H. contortus'' larvae molt several times, resulting in an L3 form that is infectious for the animals. The host ingests these larvae when grazing. The L4 larvae, formed after another molt, and adult worms suck blood in the abomasum of the animal, potentially giving rise to anaemia and oedema, which eventually can lead to death. The infection, called haemonchosis, causes large economic losses for farmers around the world, especially for those living in warmer climates. Anthelminthics are used to prevent and treat these, and othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barber's Pole
A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft. The trade sign is, by a tradition dating back to the Middle Ages, a staff or pole with a helix of colored stripes (often red and white in many countries, but usually red, white and blue in the United States). The pole may be stationary or may rotate, often with the aid of an electric motor. A "barber's pole" with a helical stripe is a familiar sight, and is used as a secondary metaphor to describe objects in many other contexts. For example, if the shaft or tower of a lighthouse has been painted with a helical stripe as a daymark, the lighthouse could be described as having been painted in "barber's pole" colors. Origin in barbering and surgery During medieval times, barbers performed surgery on customers, as well as tooth extractions. The original pole had a brass wash basin at the top (representing the vessel in which leeches were kept) and bottom (representing t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Substance
A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances (substances consisting of a single chemical element), chemical compounds, or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical. Chemical substances exist as solids, liquids, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strongylida
The Strongylida suborder includes many of the important nematodes found in the gastrointestinal tracts of ruminants, horses, and swine, as well as the lungworms of ruminants and the hookworms of dogs and cats. Taxonomy This suborder includes (superfamily - included families): *Ancylostomatoidea ** Ancylostomatidae * Diaphanocephaloidea **Diaphanocephalidae * Heligmosomoidea ** Heligmosomidae * Metastrongyloidea **Angiostrongylidae **Crenosomatidae **Filaroididae **Metastrongylidae **Protostrongylidae **Pseudaliidae ** Syngamidae * Molineoidea ** Molineidae * Strongyloidea **Chabertiidae **Cloacinidae ** Deletrocephalidae ** Stephanuridae **Strongylidae *Trichostrongyloidea ** Amidostomatidae **Cooperiidae ** Dictyocaulidae ** Dromaeostrongylidae ** Haemonchidae ** Heligmonellidae **Heligmosomatidae ** Herpetostrongylidae ** Mackerrasrtongylidae ** Nicollinidae **Trichostrongylidae Major superfamilies Diaphanocephaloidea These are parasites of the digestive tracts of terrestr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic Nematodes Of Mammals
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endoparasite lives inside the host's body; an ect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic Diseases
A parasitic disease, also known as parasitosis, is an infectious disease caused by parasites. Parasites are organisms which derive sustenance from its host while causing it harm. The study of parasites and parasitic diseases is known as parasitology. Medical parasitology is concerned with three major groups of parasites: parasitic protozoa, helminths, and parasitic arthropods. Parasitic diseases are thus considered those diseases that are caused by pathogens belonging taxonomically to either the animal kingdom, or the protozoan kingdom. Terminology Although organisms such as bacteria function as parasites, the usage of the term "parasitic disease" is usually more restricted. The three main types of organisms causing these conditions are protozoa (causing protozoan infection), helminths (helminthiasis), and ectoparasites. Protozoa and helminths are usually endoparasites (usually living inside the body of the host), while ectoparasites usually live on the surface of the host. Protozoa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veterinary Parasitology (journal)
''Veterinary Parasitology'' is a peer-reviewed scientific journal In academic publishing, a scientific journal is a periodical publication intended to further the progress of science, usually by reporting new research. Content Articles in scientific journals are mostly written by active scientists such as s ... in the discipline of veterinary parasitology. It is the official organ of the American Association of Veterinary Parasitologists, the European Veterinary Parasitology College, and the World Association for the Advancement of Veterinary Parasitology. References External links * Veterinary medicine journals Parasitology journals Elsevier academic journals Publications established in 1975 {{zoo-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Journal For Parasitology
The ''International Journal for Parasitology'' is an international medical journal published for the Australian Society for Parasitology by Elsevier. The journal includes original research articles, reviews, and commentary relating to parasites Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted structurally to this way of lif ... and their host interactions. External links * Australian Society for Parasitology Parasitology journals Publications established in 1971 Elsevier academic journals English-language journals Journals published between 13 and 25 times per year {{med-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Managed Intensive Rotational Grazing
In agriculture, rotational grazing, as opposed to Grazing#Continuous, continuous grazing, describes many systems of pasturing, whereby livestock are moved to portions of the pasture, called Paddock (field), paddocks, while the other portions rest. Each paddock must provide all the needs of the livestock, such as food, water and sometimes shade and shelter. The approach often produces lower outputs than intensive animal farming, more intensive animal farming operations, but requires lower inputs, and therefore sometimes produces higher net farm income per animal. Approach In rotational grazing livestock are moved to portions of the pasture, called Paddock (field), paddocks, while the other portions rest. The intent is to allow the pasture plants and soil time to recover. Healing native rangeland may require a combination of burning and rotational grazing. Rotational grazing can be used with ruminants such as cattle, sheep or goats. Or even non-ruminants such as pigs. The herds g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Coast Native Sheep
The Gulf Coast Native is a breed of sheep native to the U.S. states bordering the Gulf Coast. Also occasionally known as the ''Louisiana Scrub'', ''Pineywoods Native'' or simply ''Gulf Coast sheep'', the breed is a mix of many of the sheep varieties which populated the Southern United States during the European colonization of the region. It is now an exceedingly rare breed, but one valuable for its ability to adapt to the hot humid climate of the Gulf Coast. History The bloodlines of Gulf Coast Native sheep can be traced back to the original proliferation of Churra sheep in the New World during the 15th century by the Spanish. Later, these Criollo-type sheep mixed intermittently with British and French breeds. Some strains may also show Tunis influence. Thousands of Gulf Coast sheep roamed free range over pastures in the South, except for regular roundups. In an age before modern husbandry methods, these sheep adapted to the climate of the South or perished, breeding in decade ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FAMACHA
FAMACHA (FAffa MAlan CHArt) is a selective treatment method for controlling the level of parasitic barber's pole worm (''Haemonchus contortus'', also known as twisted wireworm) among domesticated small ruminant populations. In contrast with earlier, more aggressive approaches, under FAMACHA only certain sheep or goats in a flock are selected for treatment. Selection for treatment is based on the degree of anaemia the animals are displaying in their mucous membranes, which is assessed through a colour guided chart. Background The FAMACHA method of selective treatment was developed by three South African researchers (Drs Francois Malan, Gareth Bath and Jan van Wyk) against the backdrop of major anthelmintic resistance in South Africa. However, the method has since been implemented successfully in various locations around the world. The aim of the method is to maintain a sufficient susceptible ''H. contortus'' worm population (‘refugia’) on the pasture. By only dosing those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccine
A vaccine is a biological Dosage form, preparation that provides active acquired immunity to a particular infectious disease, infectious or cancer, malignant disease. The safety and effectiveness of vaccines has been widely studied and verified. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or Antigen, killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as a threat, destroy it, and to further recognize and destroy any of the microorganisms associated with that agent that it may encounter in the future. Vaccines can be prophylaxis, prophylactic (to prevent or ameliorate the effects of a future infection by a natural or "wild" pathogen), or therapeutic vaccines, therapeutic (to fight a disease that has already occurred, such as cancer vaccine, cancer). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moredun Research Institute
The Moredun Research Institute is a scientific research institution based at the Pentlands Science Park, in the Bush Estate area of Midlothian, Scotland. It conducts research into diseases of farm livestock and the promotion of animal health and welfare. Moredun employs over 200 vets, scientists and support staff, that are funded primarily by the Agriculture, Food and Rural Communities Directorate of the Scottish Government. The Institute received £7.1 million from the government in 2010–11. the Scottish Government History The Animal Diseases Research Association, now the registered charity the Moredun Foundation, was founded in 1920 by a group of Scottish farmers, with the aim of improving the health of livestock, especially |
