Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Subject "Veterinary medicine -- South Africa"
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- Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Subject
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Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Subject "Veterinary medicine -- South Africa"
Now showing items 21-40 of 118
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(Published by the Government Printer, Pretoria., 1987)Ivermectin treatment of all cattle on a badly infected farm failed to interrupt the transmission of P. bovicola, even though ovipositional blood spots were drastically reduced in numbers for an entire summer season following ...
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(Published by the Government Printer, Pretoria., 1987)The current knowledge of the pathogenicity, clinical signs and mortality of artificial infections by syringe inoculation of Cowdria ruminantium in laboratory and wild strains of mice is reviewed. It is concluded that a ...
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(Published by the Government Printer, Pretoria., 1987)Blood collected in either sodium heparin or disodium edetate vacutainers from febrile goats infected with 4 isolates of Cowdria ruminantium and cryopreserved with 10% dimethyl sulphoxide at -70⁰C and -196⁰C was an effective ...
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(Published by the Government Printer, Pretoria., 1987)Cross-immunity studies in goats and mice using 4 isolates of Cowdria ruminantium, 2 from the Republic of South Africa (Kwanyanga and Kümm), 1 from the Republic of Mali (Mali 1), and 1 from Guadeloupe (Garde1), demonstrated ...
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(Published by the Government Printer, Pretoria., 1987)The existence of heartwater on 3 islands of the Central Lesser Antilles and the presence of an efficient vector originating from Africa, Amblyomma variegatum, on most of the islands of this region constitute a serious ...
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(Published by the Government Printer, Pretoria., 1987)Both growth-inhibitory and growth-stimulatory factors were detected in vitro in medium from chemotactically stimulated cultures of lung lavage cells. The macrophage component of the lavage cells was found to produce a ...
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(Published by the Government Printer, Pretoria., 1987)Using specific antisera prepared against heat-treated and untreated cells in a microtitre system, 7 strains of Campylobacter fetus venerealis were examined for the presence of K-antigen. The technique was effective ...
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(Published by the Government Printer, Pretoria., 1987)Twelve sets of incisors of Cape mountain zebras, 9 of which were from known-age individuals ranging in age from 11 months to 19 years, from the Mountain Zebra National Park, are described and depicted to illustrate not ...
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(Published by the Government Printer, Pretoria., 1987)As a result of a personal survey in 1982, interviewing veterinarians from Louis Trichardt to Uitenhage, it was concluded that bovine heartwater is currently regarded as the most serious tick-borne disease problem in South ...
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(Published by the Government Printer, Pretoria., 1987)Certain species of Geigeria contain sesquiterpene lactones which cause vomiting disease in sheep. Dihydrogriesenin (DHG), a sesquiterpene lactone from G. aspera, contains an α-methylene function which can spontaneously ...
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(Published by the Government Printer, Pretoria., 1987)The sequential development of C. ruminantium (Kwanyanga and Kumm isolates) was followed in caprine leukocyte cultures by light microscopy, direct immunofluorescent microscopy (DFA), indirect immunofluorescent microscopy ...
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(Published by the Government Printer, Pretoria., 1987)Criteria that are required to confirm heartwater in ruminants and mice are discussed. In ruminants it entails the microscopical and macroscopical lesions as well as the identification of Cowdria ruminantium in brain smears ...
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(Published by the Government Printer, Pretoria., 1987)A presumptive diagnosis of heartwater in the living animal can be based on clinical and epidemiologic observations. In Guadeloupe, heartwater can be confused with haemonchosis in goats or cerebral babesiosis in cattle. ...
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(Published by the Government Printer, Pretoria., 1987)Mallory's phloxine-methylene blue stain was used to differentiate colonies of Cowdria ruminantium in midgut epithelial cells of nymphal Amblyomma hebraeum that had been infected as larvae. Gut tissues were collected from ...
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(Published by the Government Printer, Pretoria., 1987)Anaplasmosis can be diagnosed either by immunological techniques or by direct microscopic examination of blood smears. Both methods are time-consuming and labour intensive. The use of DNA probes in an hybridization assay ...
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(Pretoria : Government Printer, 1987)The hosts, sites of attachment, life cycle, habitat requirements and seasonal abundance of Amblyomma astrion, Amblyomma cohaerens, Amblyomma gemma, Amblyomma hebraeum, Amblyomma lepidum, Amblyomma marmoreum, Amblyomma ...
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(Pretoria : Government Printer, 1987)Domestic stock on a farm 30 km north of Grahamstown were treated with an acaricide at regular intervals over a period of several years. This resulted in a marked reduction in all stages of development of Amblyomma hebraeum ...
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(Published by the Government Printer, Pretoria., 1987)The efficacy of subcutaneous, intramuscular and intraperitoneal inoculation of heartwater infective blood or nymph suspensions was tested in 5 experiments involving a total of 199 sheep. The success rate of subcutaneous ...
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(Published by the Government Printer, Pretoria., 1987)As a pilot project of a study undertaken to determine the influence of S. mattheei X S. haematobium hybridization on various South African S. mattheei populations by means of biochemical-taxonomic methods, a comparative ...
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(Pretoria : Government Printer, 1987)At present, heartwater in the Caribbean is known with certainty only on Guadeloupe, Marie Galante and Antigua; the first 2 islands are widely infected. The most important factors responsible for particular aspects of ...
Now showing items 21-40 of 118