Browsing 1998 Onderstepoort Journal of Veterinary Research, Volume 65, 1998 by Title

Browsing 1998 Onderstepoort Journal of Veterinary Research, Volume 65, 1998 by Title

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  • The clinical efficacy of enrofloxacin in the treatment of experimental bovine pneumonic pasteurellosis 
    Thompson, P.N. (Peter N.); Van Amstel, S.R.; Henton, Marijke M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    The clinical efficacy of enrofloxacin was tested in calves with experimentally induced pneumonic pasteurellosis. A strain of Pasteurella haemolytica, biotype A, serotype 1 (P haemolytica A 1), which had been isolated ...
  • Coccidia oocysts in the faeces of farmed ostrich (Struthio camelus) chicks in Botswana 
    Mushi, E.Z.; Isa, J.F.W.; Chabo, R.G.; Binta, M.G.; Kapaata, R.W.; Ndebele, R.T.; Chakalisa, K.C.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Coccidia oocysts were demonstrated in the faeces of 53 (about 34 %) of 156 apparently healthy ostrich chicks. Young chicks had the highest proportion of infestation while those more than 9 weeks old had no oocysts at all ...
  • Comparison of immune responses of two Salmonella gallinarum strains viewed as possible vaccines for fowl typhoid in Kenya 
    Nyaga, P.N.; Kimoro, C.O.; Bebora, Lilly C.,; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    The immune responses of two S. gallinarum strains, L46 and CN 180, were compared in 15-week-old cockerels. The humoral and cell-mediated immune responses were assayed by means of the indirect haemagglutination test (IHA) ...
  • Correlation between ability of Ornithobacterium rhinotracheale to agglutinate red blood cells and susceptibility to fosfomycin 
    Fitzgerald, S.L.; Greyling, J.M.; Bragg, R.R. (Robert Richard); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Twenty five freeze-dried isolates of Ornithobacterium rhinotracheale were used for the determination of minimum inhibitory concentrations (MIC) against the antibiotic fosfomycin (Fosbac, produced by Bedson SA, consisting ...
  • Detection and characterization of foot-and-mouth disease virus in sub-Saharan Africa 
    Bastos, Armanda D.S.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Genomic amplification of the VP1 gene of SAT-type foot-and-mouth disease virus (FMDV) was performed with published and novel oligonucleotide primers. The primer pair with the highest SAT-type recognition (67 %) was identified ...
  • Detection of African horsesickness virus and discrimination between two equine orbivirus serogroups by reverse transcription polymerase chain reaction 
    Bremer, C.W.; Viljoen, G.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    A reverse transcription polymerase chain reaction (RT-PCR), based on the gene encoding the NS2 protein of African horsesickness virus (AHSV), was developed for rapid serogroup-specific detection of AHSV. The specificity ...
  • Distribution of endocrine cells in the gut of the impala (Aepyceros melampus) 
    Schoeman, J.H.; De Vos, Valerius; Van Aswegen, G.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Immunocytochemical methods were employed to demonstrate endocrine cells, containing peptides and serotonin, in the gut of the impala. Cells immunoreactive to serotonin, somatostatin, gastrin, cholecystokinin, glucagon, ...
  • The distribution of heartwater in the highveld of Zimbabwe, 1980-1997 
    Peter, T.F.; Perry, B.D. (Brian D.), 1946-; O'Callaghan, C.J.; Medley, G.F.; Shumba, W.; Madzima, W.; Burridge, M.J.; Mahan, S.M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Heartwater, the tick-borne disease caused by the rickettsia Cowdria ruminantium has historically been confined to the southern and western lowvelds of Zimbabwe. Since 1986, however, cases of heartwater have been diagnosed ...
  • Dynamics of free-living ixodid ticks on a game ranch in the Central Province, Zambia 
    Horak, Ivan Gerard; Zieger, U.; Cauldwell, A.E.; Verwoerd, Daniel Wynand (Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Free-living ixodid ticks were collected at monthly intervals from January to December 1996 by dragsampling the vegetation of Mtendere Game Ranch in the Chisamba District of the Central Province, Zambia. Ticks belonging ...
  • The efficacy of used engine oil against ticks on cattle 
    Dreyer, K.; Fourie, L.J.; Kok, D.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    The study was conducted in a peri-urban agricultural system at Botshabelo, a city in the south-eastern Free State. A questionnaire survey revealed that 88,5% of cattle farmers in the area experienced problems related to ...
  • An epidemic of besnoitiosis in cattle in Kenya 
    Njagi, O.N.; Ndarathi, C.M.; Nyaga, P.N.; Munga, L.K.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    A total of 17 head of cattle presenting with typical "Elephant skin disease" were isolated from the rest of the herd within a beef ranch for further clinical observation. On physical examination, all the animals had ...
  • Epidemiology of tick-borne diseases of cattle in Botshabelo and Thaba Nchu in the Free State Province 
    Dreyer, K.; Fourie, L.J.; Kok, D.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    A seroepidemiological study was conducted on 151 cattle from the Botshabelo and Thaba Nchu areas in the central Free State Province of South Africa, two areas where small scale, peri-urban cattle farming is practised. An ...
  • Experimental studies on the life-cycle of Sebekia wedli (Pentastomida: Sebekidae) 
    Boomker, Jacob Diederik Frederik; Booyse, Dirk G.; Junker, Kerstin; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Four young Nile crocodiles (Crocodylus niloticus) were infected with infective pentastome larvae obtained from naturally infected Mozambique bream, Oreochromis mossambicus, and red-breasted bream, Tilapia rendalli swierstrai ...
  • Guide for authors 
    Verwoerd, Daniel Wynand (Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
  • Helminths and bot fly larvae of wild ungulates on a game ranch in Central Province, Zambia 
    Boomker, Jacob Diederik Frederik; Horak, Ivan Gerard; Zieger, U.; Cauldwell, A.E.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Helminths and bot fly larvae were collected from 11 wild ungulate species on a game ranch in the Central Province of Zambia. New host-parasite records are: Calicophoron sp. from defassa waterbuck Kobus ellipsiprymnus ...
  • Immunization of rabbits with Amblyomma hebraeum nymphal homogenates and implications for the host amplification system 
    Tembo, S.D. .; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    lmmunochemical mechanisms involved in tick rejection by a host are not well documented. The role of serum globulins, and that played by the amplification system's humoral products (thrombin from the coagulation, plasmin ...
  • Individual host variations in tick infestations of cattle in a resource-poor community 
    Dreyer, K.; Fourie, L.J.; Kok, D.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Relative resistance levels of cattle against tick infestations in the communal grazing area of Botshabelo in the south-eastern Free State were determined. The objective was to establish whether differences in resistance ...
  • Isolation and characterization of a Babesia species from Rhipicephalus evertsi evertsi ticks picked off a sable antelope (Hippotragus niger) which died of acute babesiosis 
    Hove, T.; Sithole, N.; Munodzana, D.; Masaka, S.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Transmission of a Babesia species to susceptible cattle by Rhipicephalus evertsi evertsi ticks picked off a sable which died of acute babesiosis is described. The parasite was initially isolated by feeding R. e. evertsi ...
  • Ixodid tick infestations of wild birds and mammals on a game ranch in Central Province, Zambia 
    Horak, Ivan Gerard; Zieger, U.; Cauldwell, A.E.; Uys, A.C. (André Charles); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Ticks were collected at irregular intervals from December 1995 to November 1996 from wildlife on Mtendere Game Ranch in the Chisamba District of Central Province, Zambia. Total collections were made from two species of ...
  • Krimpsiekte in a sheep following a single dose of Tylecodon ventricosus (Burm. f.) Toelken and the isolation of tyledoside D from this plant species 
    Vleggaar, Robert; Botha, C.J. (Christoffel Jacobus); Kellerman, T. Stephanus; Schultz, R.A. (Rowena Anitra); Erasmus, G.L.; Retief, E.P.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
    Tylecodon ventricosus induced severe respiratory distress in two penned sheep without any electrocardiographic abnormalities being recorded. Based on the results it appears as if T. ventricosus predominantly induces the ...