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- Browsing 1985 Onderstepoort Journal of Veterinary Research, Volume 52, 1985 by Issue Date
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Browsing 1985 Onderstepoort Journal of Veterinary Research, Volume 52, 1985 by Issue Date
Now showing items 1-20 of 45
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(Published by The Government Printer, Pretoria, 1985)The conglutinin titres of year-old Bonsmara-cross cattle infected with Cowdria ruminantium were inversely proportional to the severity of the reactions elicited by the infection. There was no correlation, however, between ...
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(Published by The Government Printer, Pretoria, 1985)Cowdria ruminantium was cultivated in a calf endothelial cell line after the cells had been irradiated at 45 & 90 GY. Another experiment in which the inoculum and non-irradiated cells were centrifuged together also yielded ...
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(Published by The Government Printer, Pretoria, 1985)The appropriate literature has been reviewed for the purpose of defining the phenomenon of stress in lactating dairy cattle, establishing a baseline concept of lactation stress and emphasizing the most significant aspects ...
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Addition of rabbit serum to EMJH medium improves isolation of Leptospira interrogans serovar hardjo (Published by the Government Printer, Pretoria., 1985)The addition of 2 % pooled rabbit serum to semi-solid commercial EMJH medium with EMJH enrichment and 0,5 mg of 5-fluorouracil per ml was found to enhance the growth rate and success of isolation of Leptospira interrogans ...
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(Published by The Government Printer, Pretoria, 1985)The double-stranded RNA gene coding for the surface antigen responsible for inducing neutralising antibodies has been isolated, converted to DNA, and cloned in the plasmid pBR322. So far, only plasmids containing inserts ...
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(Published by the Government Printer, Pretoria., 1985)Gross and microscopical lesions in mice intravenously infected with the Welgevonden strain of Cowdria ruminantium closely resembled the lesions described in cattle, sheep and goats. A high concentration of organisms was ...
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(Published by The Government Printer, Pretoria, 1985)A field outbreak of Hertia pallens poisoning in sheep is described. The hepatotoxicity of the plant was experimentally demonstrated in 7 sheep which developed lesions that ranged from a diffuse degeneration to centrilobular ...
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(Published by the Government Printer, Pretoria., 1985)A total of 594 sera collected from buffalo (Syncerus caffer) in the Hluhluwe/Umfolozi Game Reserve complex, Ndumu Game Reserve and the eastern shores of Lake St Lucia were examined for antibody to SAT 1, 2 and 3 types of ...
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(Published by the Government Printer, Pretoria., 1985)The approximate LD₅₀ and cumulative effect of 4 bufadienolides, isolated from Cotyledon orbiculata, were determined in guinea-pigs. Two of the bufadienolides proved to be mildly cumulative. One of the mildly cumulative ...
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(Published by the Government Printer, Pretoria., 1985)Three domestic and 12 wild species of ungulate have been recorded as hosts of Rhipicephalus glabroscutatum. The major site of attachment for larvae, nymphs and adults is around the hooves and on the lower legs. This tick ...
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(Published by The Government Printer, Pretoria, 1985)Herpesviruses, previously isolated from cattle (Theodoridis, 1978), were further studied and provisionally placed in the bovid herpesvirus 4 (BHV-4) group. Major differences were found between IBR-IPV (BHV-1) and BHV-4 ...
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(Published by The Government Printer, Pretoria, 1985)This lecture commences with a synopsis of the present activities and organization of the world-famous Veterinary Research Institute in South Africa, colloquially and internationally known as Onderstepoort. Some of the major ...
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(Published by The Government Printer, Pretoria, 1985)Field outbreaks of a syndrome of unknown aetiology associated with the grazing of green oats (Avena sativa) in the south-western Cape Province were characterized by diarrhoea, photosensitivity and death in goats and by ...
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(Published by the Government Printer, Pretoria., 1985)It was shown in this study that Rhipicephalus evertsi evertsi males emit pheromones in the preparasitic as well as in the parasitic phases. Conspecific unengorged male and female images exhibited a high response to ...
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(Published by the Government Printer, Pretoria., 1985)From July 1979 - December 1980, 48 springbok were culled for a parasite survey at Benfontein. Lice were the dominant parasites and reached a peak in September. Damalinia antidorcus, Linognathus antidorcitis, Linognathus ...
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(Published by The Government Printer, Pretoria, 1985)The effect of both environmental and management related stressors on fertility is discussed. While environmental heat as a stressor is significant in disrupting normal reproductive cyclicity, management induced stress is ...
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The epizootiology and control of heartwater and other tick-borne diseases of cattle in South Africa (Published by The Government Printer, Pretoria, 1985)The history of the main bovine tick-borne diseases occurring in South Africa and the role Onderstepoort played in their identification and control is briefly reviewed. The present attitudes regarding the control of tickborne ...
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(Pretoria : Government Printer, 1985)
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(Published by The Government Printer, Pretoria, 1985)Infection of bovines with bovine leukaemia virus (BLV) manifests itself in either of two ways: 30-70% of carriers develop persistent lymphocytosis (PL), with the viral genome integrated at a large number of different sites ...
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(Published by the Government Printer, Pretoria., 1985)Amblyomma hebraeum ticks, collected in the field and individually homogenized, were injected into mice. Thirteen out of 240 ticks were shown to be infected with the heartwater agent. Antibodies against Cowdria ruminantium ...
Now showing items 1-20 of 45