- UPSpace Home
- →
- South African National Veterinary Repository
- →
- Onderstepoort Journal of Veterinary Research
- →
- 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987
- →
- Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Issue Date
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Issue Date
Now showing items 21-40 of 118
-
The serological relationship between Cowdria ruminantium and certain members of the genus Ehrlichia (Published by the Government Printer, Pretoria., 1987)Although Cowdria ruminantium has been classified within the tribe Ehrlichia of the family Rickettsiaceae, there has been no extensive study conducted regarding its antigenic relationship to members of the genus Ehrlichia, ...
-
(Published by the Government Printer, Pretoria., 1987)This paper reviews the available literature on the treatment of heartwater and draws comparisons with results obtained from recent work on experimentally-induced heartwater in sheep, calves and mice.
-
(Published by the Government Printer, Pretoria., 1987)The isolation, characterization and kinetic properties of a toxic and non-toxic anti-protease from the eggs of A. hebraeum are compared with similar data obtained for eggs of other tick species. The biochemistry of various ...
-
(Published by the Government Printer, Pretoria., 1987)Mice develop a specific immune response following infection with the mice strains of heartwater. In the case of the Kümm strain the agent can persist in some tissues for up to 365 days. Transfer of spleen cells from immune ...
-
(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 ...
-
(Published by the Government Printer, Pretoria., 1987)Procedures to narcotize fish by means of alternating or direct electrical currents are described and a method of evaluating the narcotic effects on fish of electrical currents is detailed. The role of fish length on the ...
-
(Published by the Government Printer, Pretoria., 1987)The incidence of isolation of Leptospira sp. from the kidneys of slaughter pigs with “white-spot" macroscopic lesions was determined. Histology and general bacteriology were performed. Leptospira pomona was isolated from ...
-
(Published by the Government Printer, Pretoria., 1987)Anaplasma centrale was isolated from a field collection of Rhipicephalus simus. Transstadial transmission of A. centrale with adult ticks was demonstrated, but the infection was not carried transovarially. Ticks from this ...
-
(Published by the Government Printer, Pretoria., 1987)Heartwater is a tick-transmitted rickettsial infection of ruminants, caused by Cowdria ruminantium. The tetracyclines are the only compounds available for therapy of the disease. A screen, using mice infected with C. ...
-
(Published by the Government Printer, Pretoria., 1987)Immunoselective methods with special reference to immunoadsorbent affinity chromatography as a means for the isolation of Cowdria ruminantium are reviewed. Attention is given to the source of the organism, immunization, ...
-
(Pretoria : Government Printer, 1987)Colonies of Cowdria ruminantium were studied in midgut epithelial cells and salivary gland acini of nymphal Amblyomma hebraeum that were infected experimentally as larvae. Colonies were found in both tissues and studied ...
-
(Published by the Government Printer, Pretoria., 1987)Nine Burchell's and 6 Hartmann's mountain zebras were culled during the 3 climatic periods characteristic of the Etosha National Park, South West Africa/Namibia, and were examined for helminths. The Burchell's zebras ranged ...
-
(Published by the Government Printer, Pretoria., 1987)Serologically negative horses, as determined with the indirect fluorescent antibody test (IFA), were infected with Babesia equi and 60 days later with Babesia caballi. The only clinical signs of disease observed in these ...
-
(Published by the Government Printer, Pretoria., 1987)A paramyxovirus was isolated from diseased pigeons, submitted to the Poultry Section of the Veterinary Research Institute, Onderstepoort, for post-mortem examination. The mean death time for the isolates was determined ...
-
(Published by the Government Printer, Pretoria., 1987)The pathological changes in cattle, sheep, goats, mice and various game species infected with Cowdria ruminantium are summarized. Macroscopical lesions in most animals include effusion of body cavities, oedema of the lungs ...
-
(Published by the Government Printer, Pretoria., 1987)Resistance to 20 antibiotics of 128 Salmonella and 97 Escherichia coli isolates from various registrable farm feeds was determined. A high frequency of comparatively low levels of resistance was found in both the Salmonella ...
-
(Published by the Government Printer, Pretoria., 1987)Numerous parameters affect the enzyme-linked immunosorbent assay activity and the assay conditions must therefore be carefully controlled to obtain reproducible results. These parameters include temperature, pH, ionic ...
-
(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 ...
-
(Published by the Government Printer, Pretoria., 1987)Thriving, permanent colonies of Musca xanthomelas and later of Musca nevilli were successfully established. However, because of the low reproduction potential of Musca lusoria a small colony only was kept for a limited ...
-
(Published by the Government Printer, Pretoria., 1987)Faecal samples of 2 pigs, kept on a constant diet, were analysed for Lactobacillus acidophilus and other lactic acid bacteria at 1 week intervals over a period of 3 months. Enumeration of L. acidophilus by selective methods ...
Now showing items 21-40 of 118