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- Browsing 1985 Onderstepoort Journal of Veterinary Research, Volume 52, 1985 by Type
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Browsing 1985 Onderstepoort Journal of Veterinary Research, Volume 52, 1985 by Type "Article"
Now showing items 21-40 of 43
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(Published by The Government Printer, Pretoria, 1985)Two groups of calves were respectively immunized with heartwater blood (BV) and ground-up tick suspension (GUTS) vaccine. A third group was left unimmunized as controls. No difference in the immune status conferred could ...
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(Published by the Government Printer, Pretoria., 1985)Diplodiosis, a neuromycotoxicosis, principally of cattle, which is characterized by ataxia, paresis and paralysis, was induced in 13 cattle, 16 sheep and 3 goats, by dosing them with Diplodia maydis [=D. zeae (Schw.) Lév.] ...
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(Published by the Government Printer, Pretoria., 1985)Electron microscopy revealed that 80% of captured vervet monkeys, held in quarantine for experimental use, showed extensive proliferation of spiral-shaped bacteria on the mucosal epithelium of the large bowel. A consortium, ...
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(Published by the Government Printer, Pretoria., 1985)By leaving open in tum the genital orifice, coxal apertures and anus , the present study has shown that engorged female Argas walkerae release at least 1 volatile pheromone mainly, or maybe exclusively, from the genital ...
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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)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)The isolation of Cowdria ruminantium by means of wheat germ lectin affinity chromatography as described in this paper permits the recovery of partially purified viable organisms under mild conditions in short time. These ...
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(Published by the Government Printer, Pretoria., 1985)Leptospira inlerrogans serovar hardjo was isolated from urine from dairy cattle in the Onderstepoort area. This was the first successful isolation of this serovar as sole agent causing an abortion storm in the Republic ...
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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 ...
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(Published by The Government Printer, Pretoria, 1985)During scanning electron microscopy (SEM) of the tegument of Schistosoma mattheei, a structure was observed within the nippled tubercles. It is postulated that it is a sensory receptor with a tactile function.
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(Published by The Government Printer, Pretoria, 1985)A total of 917 Mycoplasma isolations were made from 4 092 specimens originating from 2 874 cattle in private herds and at AI stations. The percentages of isolations from the different sources were: cervico-vaginal mucus ...
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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)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)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 paralytic condition of farm stock in South West Africa, characterized by prominent neuronal and some mild extraneuronal pigmentation, is described. The distribution of the pigment, which was mainly located in the larger ...
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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)Lung lesions in sheep and goats infected with the Ball₃ strain of Cowdria ruminantium corresponded with those reported in mice infected with the Welgevonden strain of Cowdria ruminantium. Ultrastructural changes in the ...
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(Published by the Government Printer, Pretoria., 1985)When conventional techniques were applied to 84 isolates of Staphylococcus aureus from milk samples, it was found that they were all catalase and phosphatase positive and oxidase negative. They all fermented glucose within ...
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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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(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 ...
Now showing items 21-40 of 43