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Showing 1 to 20 of 37 for “"Haemonchus contortus"”.
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Haemonchus contortus Infections in Alpacas and Sheep
The blood feeding nematode Haemonchus contortus infects the abomasum of small ruminants and compartment three (C-3) of camelids. Heavy infections may cause severe anemia and death. Alpacas were first introduced into the U.S. in the 1980s. Although not true ruminants, alpacas may become infected …
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Genetics of resistance to Haemonchus contortus infections in sheep
Genetic control of resistance to H. contortus was assessed in 198 ewes and 386 lambs of 50% Dorset, 25% Rambouillet and 25% Finnsheep breeding in fall and spring over 2 yr. After deworming, lambs that were approximately 120 d old and ewes that had weaned their lambs at 60 d and dried off were …
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Characterizing Peripheral Cellular and Humoral Immune Responses to Haemonchus contortus in Sheep
… worldwide. The most concerning of which is Haemonchus contortus; a blood-sucking nematode found in the abomasum of sheep. Worldwide anthelminthic resistance has prompted exploration of alternative methods of parasite control. Many studies have shown St. Croix hair sheep posses an …
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The anthelmintic effect of Bacillus thuringiensis Cry5B on Haemonchus contortus in sheep
… that Cry5B would be effective against Haemonchus contortus, a highly pathogenic parasite, in sheep. Two experiments tested efficacy of Cry5B in sheep experimentally infected with H. contortus. In the first, a live genetically modified, asporogenous strain of B. thuringiensis expressing …
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Molecular characterization of GABA receptor subunits from the parasitic nematode Haemonchus contortus
Haemonchus contortus is a parasitic nematode that is controlled by several nematocides which target ion channels. We have identified two H. contortus ion channel genes, Hcounc- 49B and C that encode two GABA-gated chloride channel subunits. Electrophysiological analysis shows that the Hco-UNC-49B …
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Análise genética de características de resistência ao Haemonchus contortus em caprinos Crioulos
… da resposta à resistência ao parasitismo Haemonchus contortus ao longo do tempo, oriundos de 138 caprinos da raça Crioula com idades variando de 173 a 307 dias, pertencentes a empresa francesa INRA (Institut National de Recherche Agronomique) na Unité de Recherches Zootechniques (URZ) …
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Serologic and Electron Microscopic Studies on the Sheep Parasitic Nematode, Haemonchus Contortus
Made available in DSpace on 2015-05-13T22:12:03Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013362.PDF: 17210367 bytes, checksum: a0a07e932cfa8757653ab08e7beae000 (MD5) Previous issue date: 1969
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Immune related gene expression of parasite-resistant sheep during a Haemonchus contortus infection
… means of treatment are becoming less effective. Haemonchus contortus is of particular interest because it feeds on blood, causing significant pathological problems in the host. Certain breeds of sheep, like St. Croix, are more naturally resistant to parasitism. However, the underlying mechanisms …
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Isolation and partial characterization of three acetylcholine-gated chloride channels in Haemonchus contortus
Haemonchus contortus is a parasitic nematode infecting ruminants causing anemia and poor health due to the parasite’s blood-feeding nature. The ability to manage infection has been confounded by the rapid development of antiparasitc drug resistance in H. contortus populations. The Cys-loop …
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Immunological evaluation of DNA vaccines against Haemonchus contortus and Toxoplasma gondii in sheep
… evaluate the immune responses of DNA vaccines to Haemonchus contortus (H. contortus) and Toxoplasma gondii (T. gondii) in sheep. In the first experiment on H. contortus, sixty 12-month old ewe lambs were divided into six groups and vaccinated twice intramuscularly over a four week interval, using …
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The Scanning and Transmission Electron-Microscopy of The Parasitic Roundworm of Sheep Haemonchus Contortus
Made available in DSpace on 2014-12-12T01:27:43Z (GMT). No. of bitstreams: 1 7317666.pdf: 8928503 bytes, checksum: c8b3477322fe6587f6746916ecb82854 (MD5) Previous issue date: 1973
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Comparative genomics of nematodes: Caenorhabditis elegans as a tool to study the Haemonchus contortus genome
… nematode parasite of small ruminants Haemonchus contortus is being sequenced at the Pathogen Sequencing Unit of the Wellcome Trust Sanger Institute, Cambridge, UK. Currently, in excess of 800 Mb of genomic sequence is available for this on-going project …
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The Effects of Naturally Occurring Plant Products on Experimental Haemonchus contortus Infection in Gerbils and Sheep
Haemonchus contortus is a blood-sucking abomasal helminth of small ruminants responsible for major economic losses to producers worldwide. Widespread resistance to commercial anthelmintics has created a need for alternative methods of parasite control. One method involves using plant products with …
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Effects of Microbes and Gases on the Free-Living Stages of Trichostrongylus Colubriformis and Haemonchus Contortus
Made available in DSpace on 2014-12-09T22:30:19Z (GMT). No. of bitstreams: 1 6901479.pdf: 4157681 bytes, checksum: 923d97eea703814db3898c073779827b (MD5) Previous issue date: 1968
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Spermatogenesis and oogenesis of Haemonchus contortus, a nematode parasitic in the abomasum of sheep and other ruminants
Haemonchus contortus, otherwise known as the “Barber Pole Worm”, “The Wire Worm” or simply as the large stomach worm of sheep, has been the subject of much scientific interest for the past quarter of a century. Considerable work has been done which has established this parasite as a factor of …
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Examination of intramolecular interactions between residues of the cys-loop GABA receptor Hco-UNC-49 from Haemonchus contortus
Haemonchus contortus is a parasitic nematode known to infect ruminant animals such as sheep, goats and cattle. Despite several different anthelmintic drugs available to control the spread of this infection, H. contortus has shown resistance to all of them. In order to combat the infection, a novel …
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The Pharmacological Characterization of Hco-UNC-49, a GABA-gated Chloride Channel from the Parasitic Nematode Haemonchus contortus
… to exhibit a unique GABAergic nervous system. Haemonchus controtus is a parasitic nematode that infects ruminants worldwide. Hco-UNC-49 is a H. contortus GABA-gated chloride channel and is an orthologue to the UNC-49 channel from the free-living nematode Caenorhabditis elegans. Previous …
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Isolation and partial characterization of three members of the GGR-1 family in the parasitic nematode Haemonchus contortus
Haemonchus contortus is a blood sucking parasitic nematode that infects ruminant animals. These parasites are of significant economic importance as they are estimated to cost the agricultural industry billions of dollars each year in management. Reliance and overuse of drugs has resulted in …
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Characterizing physiological and genetic differences in the early immune response to Haemonchus contortus in resistant and susceptible sheep
… and susceptible sheep to infection with Haemonchus contortus during the peri-parturient period and larval stage of infection. Identification of immunological events resulting in parasite resistance in St. Croix hair sheep may provide better targets for differential gene expression …
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