1975 Onderstepoort Journal of Veterinary Research, Volume 42, 1975

1975 Onderstepoort Journal of Veterinary Research, Volume 42, 1975

 

Contents Pages: Onderstepoort Journal of Veterinary Research, Vol 42, 1975

CONTENTS

Volume 42: Number 1

Electron microscopy of Cowdria ruminantium infected reticulo-endothelial cells of the mammalian host. Du Plessis, J.L. 1

Inhibition of macrophage migration in Salmonella immunity Cameron, C.M.; Van Rensburg, J.J. 15

The effect of Clostridium perfringens epsilon toxin on the blood brain barrier of mice Worthington, R.W.; Mulders, M.S.G. 25

Helminths recovered from the bontbok, Damaliscus dorcas dorcas (Pallas, 1776) Verster, A.; Imes, G.D. Jr; Smit, J.P.J. 29

Ixodes (Afrixodes) drakensbergensis n. sp. from domestic and wild animals in Natal, Republic of South Africa Clifford, C.; Theiler, G.; Baker, M. 33

Preliminary report on the transmission of Parafilaria bovicola in South Africa Nevill, E.M. 41

An outbreak of ringworm in karakul sheep caused by a physiological variant of Trichophyton verrucosum Bodin Scott, D.B. 49

A histological study of the effect of cortisol and some sex steroids on the immune response to sheep erythrocytes by the mouse Hellig, H.R.; Gerneke, W.H. 53

Some observations on the use of D-glucose-2-3H as a tracer in turnover studies in Merino sheep Van der Walt, J.G. 63

RESEARCH NOTE: Some protozoan parasites of wild birds from the vicinity of Onderstepoort

Thomas, S.E.; Dobson, L.D. 67

Volume 42: Number 2

Vitamin A deficiency in the captive African lion cub Panthera Leo (Linnaeus, 1758) Bartsch, R.C.; Imes, G.D. Jr; Smit, J.P.J. 43

Blood parasites of some wild Bovidae in Botswana Carmichael, I.H.; Hobday, E. 55

Immunization of mice and guinea-pigs against Salmonella dublin infection with live and inactivated vaccine Cameron, C.M.; Fuls, W.J.P. 63

Studies on schistosomiasis. 7. A comparison of various methods for the infestation of sheep with Schistosoma mattheei Van Wyk, J.A.; Heitmann, L.P.; Van Rensburg, L. J. 71

RESEARCH NOTE: An apparatus for the restraint of sheep during infestation with schistosomes

Van Wyk, J.A. 75

Volume 42: Number 3

The occurrence and pathology of chlamydiosis in domestic and laboratory animals : a review Schutte, A. P.; Pienaar, J.G. 77

The partial purification of Clostridium perfringens Beta toxin Worthington, R. W.; Mulders, M.S.G. 91

Some toxic, physical and chemical properties of the oral secretion of the sand tampan, Ornithodoros savignyi Audouin (1827) Howell, C.J.; Neitz, A.W.H.; Potgieter, D.J.J. 99

A rapid spectrophotometric method for the monitoring of embryonic development in ticks (Acarina : Ixodoidea) Londt, J.G.H. 103

Volume 42: Number 4

Gross and microscopic observations of ovarian abnormalities from five Burchell's zebra, Equus Burchelli antiquorum, Smith 1841 Imes, G.D.; Smuts, G.L. 109

Observations on naturally acquired hepatozoonosis of wild carnivores and dogs in the Republic of South Africa Young, E.; De Vos, V.; Bigalke, R.D.; Basson, P.A.; McCully, R.M. 117

Blindness and encephalopathy caused by Helichrysum argyrosphaerum DC. (Compositae) in sheep and cattle Basson, P.A.; Kellerman T.S.; Albl P.; Von Maltitz L.J.F.; Miller E.S.; Welman W.G. 135

Author index

149

Subject index

151



Recent Submissions

  • Anonymous; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Pretoria : The Government Printer, 1975)
  • Anonymous; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Pretoria : The Government Printer, 1975)
  • Clifford, C.M.; Baker, M.; Theiler, Gertrud; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Ixodes (Afrixodes) drakensbergensis n. sp., is described from females, males, nymphs and larvae collected on a drag at Giant's Castle Nature Reserve, Natal, Republic of South Africa; it was also taken from an eland in ...
  • Van der Walt, J.G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Bolus Injection of a mixture of D-g1ucose-2-³H and -(U)-¹⁴C into each sheep enabled a turnover rate to be calculated for each isotope and to be compared in the same animal. No statistically significant differences were ...
  • Smit, J.P.J.; Verster, Anna Johanna Maria.; Imes, G.D.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna Johanna Maria; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    A report is given on the helminths collected from 4 bontbok, Damaliscus dorcas dorcas, which died following capture at the Bontebok National Park, Swellendam, and transfer to the National Zoological Gardens, Pretoria. ...
  • Hellig, H.R.; Gerneke, W.H.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Sections of the spleen, thymus, lymph nodes and liver, collected from mice at various time intervals after injection with either steroid hormones only, sheep red blood cells (SRBC) only, or SRBC plus steroid hormones, were ...
  • Worthington, R.W.; Mulders, M.S.G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    It was shown that Clostridium perfringens epsilon toxin has the effect of allowing the passage of ¹²⁵I polyvinyl-pyrrolidone and ¹²⁵I human serum albumin into mouse brain. These substances did not enter the brains of ...
  • Scott, D.B.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    An outbreak of ringworm in Karakul sheep occurred during 1973 among the flocks of at least 14 farmers in South West Africa and the Northern Cape Province. Infections spread from one farm to another as a result of introducing ...
  • Nevill, E.M.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    The filarial worm Parafilaria bovicola causes streaks of blood on the skins of live cattle and slimy bruise-like lesions on the subcutaneous surfaces of their carcases. To determine the vectors of this worm a field survey ...
  • Cameron, Colin McKenzie; Van Rensburg, J.J.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Protein antigens were prepared from rough strains of Salmonella typhimurium and S. dublin by phenol and veronal-buffer extraction. It was shown that the in vitro migration of peritoneal exudate cells from guinea pigs ...
  • Basson, P.A.; Miller, E.S.; Kellerman, T. Stephanus; Albl, P.; Von Maltitz, L.J.F.; Welman, Wilhelmina G.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    An outbreak of amaurosis and paresis was observed amongst sheep, and occasionally cattle, which had been grazing on pastures consisting mainly of Helichrysum argyrosphaerum DC. A similar syndrome was produced by feeding ...
  • Young, E.; De Vos, Valerius; Bigalke, R.D.; Basson, P.A.; McCully, R.M.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Hepatozoonosis was studied in hyaenas, lions, jackals, cheetahs and one leopard in the Kruger National Park and compared with the condition seen in dogs in the Republic of South Africa. Hepatozoon schizonts were found in ...
  • Imes, G.D.; Smuts, G.L.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Five pair of zebra ovaries were submitted to the Onderstepoort Veterinary Research Institute for examination because of unusual uni- and/or bilateral gross appearances. Microscopic findings revealed an accessory spleen ...
  • Du Plessis, J.L.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    An electron microscopic study of structures suspected to represent a possible developmental cycle of Cowdria ruminantium in reticulo-endothelial cells of mice and ruminants is reported. After infection dense bodies increase ...
  • Londt, J.G.H.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    A rapid spectrophotometric method for the monitoring of embryonic development in Boophilus decoloratus (Koch, 1844) is described. The method is based on a quantitative assessment of guanine, the principal end-product of ...
  • Howell, C.J.; Neitz, A.W.H.; Potgieter, D.J.J.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Mice, exposed to the effects of the oral secretion of Ornithodorus savignyi by injection, revealed that a potent toxin is present in the secretion. Electrophoretic and chromatographic separations of the secretion showed a ...
  • Mulders, M.S.G.; Worthington, R.W.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    An attempt was made to purify Clostridium perfringens Beta toxin. Crude toxin prepared by ammonium sulphate precipitation of culture supernatants was purified by chromatography on Sephadex G50, Sephadex G100 and DEAE ...
  • Pienaar, J.G.; Schutte, A.P.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    The literature on the various disease syndromes caused by chlamydia in domestic and laboratory animals is summarized. A review of the pathological lesions which characterize these diseases is presented and the pathogenesis ...
  • Imes, G.D. Jr; Bartsch, R.C.; Smit, J.P.J.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    Dietary, breeding and clinical histories and pathological findings are presented from 2 confirmed and 5 presumed cases of vitamin A deficiency in immature African lions. Five of the 7 animals were born in the wild while 2 ...
  • Thomas, Shan E.; Dobson, Lynne D.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Verster, Anna J,M.; Walker, Jane B. (Published by The Government Printer, Pretoria, 1975)
    The protozoan parasites of wild birds from the vicinity of Onderstepoort are recorded. New host records for the Republic of South Africa are: Haemoproteus in Threskiornis aethiopicus, Francolinus swainsonii, Columba guinea ...

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