1994 Onderstepoort Journal of Veterinary Research, Volume 61, 1994

1994 Onderstepoort Journal of Veterinary Research, Volume 61, 1994

 

Untitled Document

CONTENTS
Volume 61: Number 1
Effect of heat-stress on conception in a dairy-herd model in the Natal highlands of South Africa Du Preez, J.H.; Willemse, J.J.C.; Van Ark, H. 1
A method for the assessment of blackfly (Diptera: Simuliidae) attraction to and engorgement on sheep in South Africa Kok, D.J.; Fourie, L.J.; Oberem, P.T. 7
Helminth and arthropod parasites of indigenous goats in the northern Transvaal Boomker, Jacob Diederik Frederik; Horak, Ivan Gerard; Ramsay, K.A. 13

The clinical pathology of heartwater. Ill. Changes in blood clotting, blood calcium, blood protein, haematocrit and white-cell counts in sheep with experimentally induced heartwater

Van Amstel, S.R.; Reyers, Fred; Myburgh, Elsbe; Pretorius, Gertruida; Sacks, P. 21
Studies on the presence of endotoxin activity and inflammatory products (Leukotrienes) in cases of experimentally induced heartwater in sheep Van Amstel, S.R.; Myburgh, Elsbe; Mundell, Jennifer; Davidson, B. 29
Parasites of South African freshwater fish . VI. Nematode parasites of some fish species in the Kruger National Park Boomker, Jacob Diederik Frederik. 35
Changes in the blood-gas status of sheep with experimentally induced heartwater. Van Amstel, S.R.; Reyers, Fred; Myburgh, Elsbe. 45
Osteology of the pelvic limb of the African elephant (Loxodonta africana) Smuts, M.M.S. (Malie Marie Sophie), 1933-; Bezuidenhout, A.J. (Abraham Johannes), 1942. 51
Pseudorabies and transmissible gastroenteritis : a serological survey in South Africa Williams, R.; Esterhuysen, J.J.; Robinson, J.T.R. 67
Ecology and epidemiology of anthrax in the Etosha National Park, Namibia Lindeque, P.M.; Turnbull, P.C.B. 71
Afrotropical Culicoides : description and comparison of the pupae of seven species of the Similis supergroup (Diptera: Ceratopogonidae) Nevill, Hilda; Dyce, A.L. 85

RESEARCH COMMUNICATION: Putative avocado toxicity in two dogs

Buoro, I.B.J.; Nyamwange, S.B.; Chai, D.; Munyua, S.M. 107
Guide for authors
Volume 61: Number 2
A rapid method of estimating the abundance of immature blackflies (Diptera: Simuliidae) Palmer, R.W. 117
Eight new Afrotropical Spinitectus spp. (Nematoda: Cystidicolidae) from freshwater fishes with a key to the members of the genus in the Region Boomker, Jacob Diederik Frederik; Puylaert, F.A. 127
Sequential feeding of Ixodes rubicundus on its natural host, Elephantulus myurus : effects on tick mass and on engorgement and moulting success Horak, Ivan Gerard; Du Toit, J.S.; Fourie, L.J. 143
Detachment rhythms of immature Ixodes rubicundus from their natural host, the rock elephant shrew (Elephantulus myurus) Horak, Ivan Gerard; Du Toit, J.S.; Fourie, L.J. 149
African horsesickness epidemiology : five species of Culicoides (Diptera: Ceratopogonidae) collected live behind the ears and at the dung of the African elephant in the Kruger National Park, South Africa Braack, L.E.O.; Meiswinkel, R. 155
A nervous disorder in cattle, caused by the plants Ficus ingens var. ingens and Ficus cordata subsp. salicifolia Myburgh, Jan G.; Fourie, Nicole; Kellerman, T. Stephanus; Cornelius, S.T.; Ward, Caroline; Van der Lugt, Jaco J. 171
A histocytochemical study of mucus glycoproteins or mucins in the intestinal tract of the African elephant (Loxodonta africana) Kotze, Sanet H.; Coetzee, Heleen L. 177
Application of immunoperoxidase techniques to formalin-fixed brain tissue for the diagnosis of rabies in southern Africa Last, R.D.; Jardine, J.E.; Smit, Marie M.E.; Van der Lugt, Jaco J. 183
RESEARCH COMMUNICATIONS: Evaluation of a short-term in vitro growth-inhibition test to determine susceptibility of Trypanosoma vivax stocks to various trypanocides Zweygarth, Erich; Kaminsky, R.; Moloo, S.K. 189
RESEARCH COMMUNICATIONS: First isolation of Campylobacter jejuni from the vaginal discharge of three bitches after abortion in South Africa Odendaal, M.W.; De Cramer, K.G.M.; Van der Walt, Martha L.; Botha, A.D.; Pieterson, P.M. 193
RESEARCH COMMUNICATIONS: Parasites of South African freshwater fish . VII. Nematodes of some scaled fishes from the Hartbeespoort Dam, Transvaal Boomker, Jacob Diederik Frederik. 197
BOOK REVIEW: Risk analysis, animal health and trade 201
Volume 61: Number 3
Serum- and bone-mineral status of ostriches with tibiotarsal rotation Soley, John Thomson; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Burger, W.P.; Reyers, Fred. 203
Neuropeptides in the myenteric ganglia and nerve fibres of the forestomach and abomasum of grey, white and black Karakul lambs Groenewald, Hermanus B. 207
Photosensitivity in South Africa. VII. Chemical composition of biliary crystals from a sheep with experimentally induced geeldikkop Coetzer, Jacobus A.W.; Miles, Christopher O.; Wilkins, A.L.; Erasmus, G.L.; Kellerman, T. Stephanus. 215
The oesophagus and stomach of the African elephant : a histological, immunocytochemical and immunofluorescence study Van Aswegen, G.; Schoeman, J.H.; De Vos, Valerius; Van Noorden, Susan. 223
The identification of Mycoplasma conjunctivae as an aetiological agent of infectious keratoconjunctivitis of sheep in South Africa Van Halderen, A.; Van Rensburg, W.J.J.; Geyer, A.; Vorster, J.H. (Jan Harm). 231
Ultrastructure of ostrich (Struthio camelus) spermatozoa. II. Scanning electron microscopy Soley, John Thomson; Roberts, D.C. 239
Perinatal mortality in lambs of ewes exposed to cultures of Diplodia maydis ( = Stenocarpella maydis) during gestation. A study of the central-nervous-system lesions Prozesky, Leon; Kellerman, T. Stephanus; Maartens, B.P.; Schultz, R.A. (Rowena Anitra); Swart, D. Petro. 247
Early and late transcriptional phases in the replication of lumpy-skin-disease virus Fick, W.C.; Viljoen, G.J. 255
Trypanosomes of some sub-Saharan birds Squires-Parsons, Deborah; Bennett, Gordon F.; Earle, Roy A. 263

RESEARCH COMMUNICATION: Bovine besnoitiosis : transfer of colostral antibodies with observations possibly relating to natural transmission of the infection

Shkap, Varda; Pipano, E.; Marcus, S.; Krigel, Y. 273
Volume 61: Number 4
The detection of antibodies cross-reacting with Cowdria ruminantium in the sera of domestic ruminants in regions of South Africa where Amblyomma hebraeum does not occur Du Plessis, J.L.; Boersema, B.R.; Van Strijp, M.F. 277
Evidence for cryptosporidial infection as a cause of prolapse of the phallus and cloaca in ostrich chicks (Struthio camelus) Penrith, Mary-Louise; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Burger, W.P.; Putterill, John Fraser. 283
Isolation and preliminary characterization of a caprine rotavirus Da Costa Mendes, V.M. (Vasco Manuel); De Beer, M.C.; Goosen, G.H.; Steele, A.D. (Andrew Duncan). 291
A survey of the incidence and importance of the tick-borne diseases heartwater, redwater and anaplasmosis in the heartwater-endemic regions of South Africa Stoltsz, Wilhelm Heinrich; Du Plessis, J.L.; De Waal, D.T. 295
Vanadium air pollution : a cause of malabsorption and immunosuppression in cattle Gummow, Bruce; Bastianello, Stella S.; Botha, C.J. (Christoffel Jacobus); Smith, H.J.C.; Basson, A.J.; Wells, B. 303
A bioequivalence and pharmacokinetic evaluation of two commercial diminazene aceturate formulations administered intramuscularly to cattle Gummow, Bruce; Swan, Gerry E.; Du Preez, J.L. 317
The virtual absence of Culicoides imicola (Diptera: Ceratopogonidae) in a light-trap survey of the colder, high-lying area of the eastern Orange Free State, South Africa, and implications for the transmission of arboviruses Venter, Gert J.; Meiswinkel, R. 327
A rapid method to quantify bacterial contamination on hatching eggs. 1. Correlation of optical density with initial bacterial count Pienaar, A.C.E.; Coetzee, L.; Bragg, R.R. (Robert Richard). 341
Photosensitivity in South Africa. VIII. Ovine metabolism of Tribulus terrestris saponins during experimentally induced geeldikkop Miles, Christopher O.; Wilkins, A.L.; Erasmus, G.L.; Kellerman, T. Stephanus. 351
Articles presented at the 23rd Annual Congress of the Parasitological Society of Southern Africa as part of the David Bruce centenary celebration
Understanding tsetse flies Langley, P.A. 361
Sleeping sickness and the central nervous system Pentreath, V.W.; Baugh, P.J.; Lavin, D.R. 369
The impact of nagana Connor, R.J. 379
Epidemiology and control of trypanosomosis Chadenga, V. 385
RESEARCH COMMUNICATIONS: Epidemiology of African horsesickness : duration of viraemia in zebra (Equus burchelli) Barnard, B.J.H.; Bengis, Roy G.; Keet, D.F.; Dekker, E.H. 391
RESEARCH COMMUNICATIONS: Bile enhances the infectivity of third stage larvae of Dictyocaulus filaria Titoy, G.A.P.; Schwan, Ernst Volker. 395
Author`s index, volume 61 of 1994 397
Subject index, volume 61 of 1994 405

Recent Submissions

  • Buoro, I.B.J.; Nyamwange, S.B.; Chai, D.; Munyua, S.M.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Two dogs were seen at the University Veterinary Teaching Hospital, Nairobi, Kenya, both having histories of dyspnoea, progressively enlarging abdomens, anasarca, ascites, pleural and pericardial effusion, and pulmonary ...
  • Nevill, Hilda; Dyce, A.L.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The pupae of Culicoides exspectator Clastrier, C. kobae Cornet & Chateau, C. micheli Cornet & Chateau, C. olyslageri Kremer & Nevill, C. ravus De Meillon and C. (Synhelea) tropicalis Kieffer are described and illustrated ...
  • Lindeque, P.M.; Turnbull, P.C.B.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Analysis of mortality records has revealed distinct patterns in the incidence of anthrax in elephant and plains ungulates. The seasonal peak among the former is in November at the end of the dry season, while among the ...
  • Williams, R.; Esterhuysen, J.J.; Robinson, J.T.R.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Two specific and sensitive, indirect enzyme-linked immunosorbent assays (ELISAs) utilizing a protein G-peroxidase conjugate were developed to detect antibodies to the pseudorabies virus (PRV) and the transmissible ...
  • Smuts, M.M.S. (Malie Marie Sophie), 1933-; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Verwoerd, Daniel Wynand; Seegers, Christine D. (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The pelvic girdle was characterized by large, transversely-placed ilial wings. The femur was the longest bone of the skeleton and its fovea capitis was situated caudomedially between the epiphyseal line and the articular ...
  • Van Amstel, S.R.; Reyers, Fred; Myburgh, Elsbe; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The blood-gas status of seven sheep with experimentally induced heartwater during the acute and terminal stages was investigated. Changes in blood gas included a decline in arterial oxygen tension (pO₂) combined with a ...
  • Anonymous; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • Shkap, Varda; Pipano, E.; Marcus, S.; Krigel, Y.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Colostral antibodies to B. besnoiti were detected by immunofluorescence in four calves born to two Besnoitia-infected dams, with titres ranging from 1:64 to 1:1024. A specific antibody titre of 1:1024 was found in colostrum ...
  • Titoy, G.A.P.; Schwan, Ernst Volker; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Incubating metacyclic larvae of Dictyocaulus filaria in ovine bile solution prior to per os infection significantly enhanced their infectivity to sheep.
  • Barnard, B.J.H.; Bengis, Roy G.; Keet, D.F.; Dekker, E.H.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The viraemic period of African horsesickness is significantly longer in experimentally infected zebra than in horses. The virus could be isolated 40 d post-infection from blood and 48 d post-infection from spleen. The ...
  • Chadenga, V.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Tsetse-transmitted trypanosomosis remains a major constraint to the development of agriculture, particularly to that of livestock production in sub-Saharan Africa. It is estimated that 10 million km² of Africa are tsetse ...
  • Da Costa Mendes, V.M. (Vasco Manuel); De Beer, M.C.; Goosen, G.H.; Steele, A.D. (Andrew Duncan); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Five cytopathic rotavirus strains were isolated in MA 104 cells from stool specimens of kids with diarrhoea. Pre-treatment of the virus with trypsin and incorporation of low levels of trypsin in the maintenance medium ...
  • Anonymous; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • Verwoerd, Daniel Wynand (Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
  • Connor, R.J.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The disease in cattle, called nagana in Zulu land, was linked with trypanosomal parasitaemia and tsetse flies. Nagana occurs in livestock throughout the tsetse belts of Africa. Wild animals are tolerant of trypanosomal ...
  • Pentreath, V.W.; Baugh, P.J.; Lavin, D.R.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Chronic African trypanosomiasis is associated with progressive behavioural deficits, for which there is a complex underlying central nervous system (CNS) pathology. This has been extensively studied in man and a range ...
  • Langley, P.A.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The discovery that tsetse flies are the vectors of African trypanosomosis, causing sleeping sickness in man and nagana in cattle, occurred at the start of a rapidly expanding colonialism in sub-Saharan Africa. Hence, the ...
  • Du Plessis, J.L.; Boersema, B.R.; Van Strijp, M.F.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    High levels of seropositivity, in all probability attributable to Ehrlichia, were recorded in the serum of domestic ruminants throughout districts in South Africa where Amblyomma hebraeum, the vector of the heartwater ...
  • Miles, Christopher O.; Wilkins, A.L.; Erasmus, G.L.; Kellerman, T. Stephanus; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    Geeldikkop was induced in a sheep by dosing it orally with a crude extract of the steroidal saponins from Tribulus terrestris. GC-MS analysis of the sheep's ruminal contents, bile, faeces and urine for free and conjugated ...
  • Pienaar, A.C.E.; Coetzee, L.; Bragg, R.R. (Robert Richard); Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)
    The use of optical-density (OD) readings after a 6-h incubation period, as a suitable method to quantify the bacterial contamination on hatching eggs, was established by the use of pure cultures of five bacterial isolates ...

View more