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- Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Type
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Browsing 1987 Onderstepoort Journal of Veterinary Research, Volume 54, 1987 by Type "Article"
Now showing items 1-20 of 116
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(Published by the Government Printer, Pretoria., 1987)Increased bleeding time, impaired blood clot retraction and decreased thrombocyte aggregation were observed in pigs infected with virulent haemadsorbing and non-haemadsorbing African swine fever virus isolates. These ...
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(Published by the Government Printer, Pretoria., 1987)The discovery of Culicoides kanagai in South Africa represents a new record for this species. The female is redescribed, and the male is described for the first time. Culicoides (A.) dasyops Clastrier, 1958 is shown to be ...
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(Published by the Government Printer, Pretoria., 1987)Bacterial isolations from tracheal and bronchial washes obtained with the aid of a fibreoptic endoscope were carried out over a 7 month period in a feedlot on calves suffering from acute pneumonic pasteurellosis. ...
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(Published by the Government Printer, Pretoria., 1987)A stable oil emulsion rabies vaccine with a low viscosity was composed by a formula previously employed for Newcastle disease vaccine. Cattle developed high and sustained antibody levels, and guinea pigs were found to ...
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(Published by the Government Printer, Pretoria., 1987)The preparation of the antigen, details of the reagents, the titration of the antispecies conjugates and the execution of the indirect fluorescent antibody test are described. The sensitivity and specificity of the test ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1987)The functional significance of some components of salivary glands and of their secretion and of haemolymph of Amblyomma hebraeum and other tick species is reviewed with respect to host responses at the attachment site, the ...
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(Published by the Government Printer, Pretoria., 1987)A critical evaluation is made of reports in the literature on the block method of vaccination and the relevant factors that play a role in the immunization against heartwater are also discussed. The most important of these ...
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(Published by the Government Printer, Pretoria., 1987)Infection with the obligatory intra-erythrocytic anaplasma-like rickettsia Aegyptianella pullorum in 4-week old broilers at a moderate altitude of 1 200 m produced a significant increase in the mean relative right ...
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(Published by the Government Printer, Pretoria., 1987)A technique for the catheterisation of the right ventricle and pulmonary artery of the domestic fowl is described. Mean peak systolic, minimum diastolic and mean pressures measured in the right ventricle and pulmonary ...
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(Published by the Government Printer, Pretoria., 1987)Urginea physodes (Jacq.) Bak., a species closely related to or possibly synonymous with U. pusilla, is described and its distribution given. Four bufadienolides were isolated from U. physodes and the approximated LD₅₀ and ...
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(Published by the Government Printer, Pretoria., 1987)This paper reviews available literature on the efficacy of acaricides against Amblyomma hebraeum and other tick species, and presents information on tests done with registered chemicals in the laboratory. Little published ...
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(Published by the Government Printer, Pretoria., 1987)This paper reviews the available literature on the clinical pathology and pathophysiology of heartwater and makes comparisons with unpublished results obtained from a recent study in experimentally-induced heartwater in ...
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(Published by the Government Printer, Pretoria., 1987)A lightweight, collapsible, tent-type, trap of 1 m² floor-area was developed for the collection of emerging Culicoides from a wide range of habitats. It is cheap; easy to build, transport and erect; withstands adverse ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1987)The growth of C. fetus fetus, C. fetus venerealis and C. fetus venerealis biotype intermedius was examined in 10 liquid media. From the data obtained, a 10% inoculum size and an oxygen level of 6% seemed imperative for ...
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(Published by the Government Printer, Pretoria., 1987)Genomic libraries of the Welgevonden and Kwanyanga isolates of Cowdria ruminantium have been constructed in an expression vector. These libraries contain approximately 4 x 10⁵ and 3 x 10⁵ recombinants respectively.
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(Published by the Government Printer, Pretoria., 1987)Two main methods are currently being used by farmers in the heartwater regions to control this disease in cattle and other stock, namely strategic control of ticks and total control of ticks. Some farmers make successful ...
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(Published by the Government Printer, Pretoria., 1987)The efficacy of ivermectin, administered in a sustained release formulation by intraruminal pumps at approximate daily dose rates of 20, 40 and 60 µg/kg, was evaluated in 16 cattle against induced infestations of 3 strains ...
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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 ...
Now showing items 1-20 of 116