1989 Onderstepoort Journal of Veterinary Research, Volume 56, 1989

1989 Onderstepoort Journal of Veterinary Research, Volume 56, 1989


Contentes Pages: Onderstepoort Journal of Veterinary Research, Vol ??, 19??


Volume 56: Number 1

Studies of encephalitozoonosis in vervet monkeys (Cercopithecus pygerythrus) orally inoculated with spores of Encephalitozoon cuniculi isolated from dogs (Canis familiaris) Van Dellen, AF, Stewart, CG & Botha, WS 1

Afrotropical Culicoides : a redescription of C. (Avaritia) imicola Kieffer, 1913 (Diptera : Ceratopogonidae) with description of the closely allied C. (A.) bolitinos sp. nov. reared from the dung of the African buffalo, blue wildebeest and cattle in South Africa Meiswinkel, R 23

The problem of escalating resistance of Haemonchus contortus to the modern anthelmintics in South Africa Van Wyk, JA, Malan, FS, Gerber, HM & Alves, RMR 41

Parasites of South African wildlife. III. Helminths of common reedbuck, Redunca arundinum, in Natal Horak, IG, Boomker, JDF, Flamand, JRB & Keep, ME 51

Paralysis of laboratory rabbits by nymphae of Ixodes rubicundus, Neumann 1904 (Acarina: Ixodidae) and some effects on the life-cycle following feeding under different temperature conditions Spickett, AM, Elliot, EGR, Heyne, H & Neser, JA 59

Parasites of domestic and wild animals in South Africa. XXIV. Arthropod parasites of bushbuck and common duiker in the Weza State Forest, Natal Horak, IG, Boomker, JDF, Keep, ME & Spickett, AM 63

The use of electronarcosis as anaesthetic in the cichlid, Oreochromis mossambicus (Peters). III. The effects of changing physical and electrical parameters on the narcotizing ability of half-wave rectified currents Barham, WT, Schoonbee, HJ & Visser, JGJ 67

Clinical pathological changes in gousiekte, a plant-induced cardiotoxicosis of ruminants Prozesky, L, Fourie, N, Kellerman, TS, Labuschagne, L & Schultz, RA 73

Research communications:

Overberg Research Projects. IV. The development of resistance to Nematodirus in lambs and spontaneous cure of Teladorsagia in weaners Reinecke, RK 81

An early record of Culicoides species (Diptera : Ceratopogonidae) developing in the dung of game animals in southern Africa Dyce, AL & Marshall, BD 85

Volume 56: Number 2

The isolation and attenuation of a virus causing rhinotracheitis in turkeys in South Africa Buys, SB, Du Preez, JH & Els, HJ 87

The pathology of blindness in new-born calves caused by hypovitaminosis A Prozesky, L & Van der Lugt, JJ 99

Parasites of South African Wildlife. IV. Helminths of kudu, Tragelaphus strepsiceros, in the Kruger National Park Horak, IG, Boomker, JDF & De Vos, V 111

The relationship between selenium deficiency and the development of pulmonary and subcutaneous emphysema in bovine ephemeral fever virus-infected cattle Odiawo, GO 123

The isolation of nucleic acid sequences specific for Cowdria ruminantium Wilkins, SC & Ambrosio, RE 127

Excretion of alcelaphine herpesvirus-1 by captive and free-living wildebeest (Connochaetes taurinus) Barnard, BJH, Bengis, RG, Griessel, MD & De Vos, V 131

Epizootology of wildebeest-derived malignant catarrhal fever in an outbreak in the north-western Transvaal : indications of an intermediate host Barnard, BJH, Griessel, MD & Van de Pypekamp, HE 135

Research communications:

Nematodirus abnormalis (May, 1920) in sheep in the south-western part of the Cape Province Louw, JP 141

The use of cephalothin and triphenyltetrazolium chloride impregnated filter paper strips in the identification of Campylobacter species Pefanis, SM, Venter, CG & Herr, S 143

Thiaminase activities and thiamine content of Pteridium aquilinum, Equisetum ramosissimum, Malva parviflora, Pennisetum clandestinum and Medicago sativa Meyer, P 145

Volume 56: Number 3

Afrotropical Culicoides : Synhelea Kieffer, 1925, resurrected as subgenus to embrace 10 species (Diptera : Ceratopogonidae) Meiswinkel, R & Dyce, AL 147

Helminth parasites of grysbok, common duikers and Angora and Boer goats in the Valley Bushveld in the eastern Cape Province Horak, IG, Boomker, JDF & MacIvor, KM de F 165

Seasonal abundance and parity of Culicoides biting midges associated with livestock at Roma, Lesotho (Diptera : Ceratopogonidae) Venter, GJ & Sweatman, GK 173

A selective procedure for the field isolation of pathogenic Streptococcus spp. of rainbow trout (Salmo gairdneri) Bragg, RR, Todd, JM, Lordan, SM & Combrink, ME 179

Immunity of tick-exposed seronegative and seropositive small stock challenged with two stocks of Cowdria ruminantium Du Plessis, JL & Van Gas, L 185

The fine structure of developmental stages of Babesia caballi in the salivary glands of Hyalomma truncatum Blouin, EF & De Waal, DT 189

The heterogenicity of Cowdria ruminantium stocks : cross-immunity and serology in sheep and pathogenicity to mice Du Plessis, JL, Van Gas, L, Olivier, JA & Bezuidenhout, JD 195

Research communications:

The leech Batracobdelloides tricarinata (Blanchard, 1897) (Hirudinea : Glossiphoniidae) as a possible reservoir of the rainbow trout pathogenic Streptococcus species Bragg, RR, Oosthuizen, JH & Lordan, SM 203

Serological evidence of Q fever in cattle in Malawi Myburgh, JG, Staley, GP & Chaparro, F 205

Adverse effects of a proposed equine sublethal endotoxin model Stadler, P & Van Amstel, SR 207

Comparative infection rates of Theileria parva lawrencei in salivary glands of Rhipicephalus appendiculatus and Rhipicephalus zambeziensis Stoltsz, WH & Blouin, EF 211

Some observations on the narcotizing ability of electric currents on the common carp Cyprinus carpio Barham, WT, Schoonbee, HJ & Visser, JGJ 215

Volume 56: Number 4

The structure of the shell and polar plugs of the egg of the whipworm, Trichuris trichiura (Nematoda : Trichuridae) from the Samango monkey (Cercopithecus albogularis) Appleton, CC & White, BJ 219

Availability of infective larvae of parasitic nematodes of sheep grazing on Kikuyu (Pennisetum clandestinum) pastures in the winter rainfall area Reinecke, RK, Kirkpatrick, R, Kriel, AMD & Frank, F 223

Hybridization model for Rhipicephalus appendiculatus and R. zambeziensis by glucose-P-isomerase isoenzymes Wouters, G 235

Overberg Research Projects. VI. The biology and control of Oestrus ovis in sheep in the winter rainfall areas of the southern Cape Louw, JP 239

Resistance of Nguni, Bonsmara and Hereford cattle to ticks in a Bushveld region of South Africa Spickett, AM, de Klerk, D, Enslin, CB & Scholtz, MM 245

The effect of passive immunization on active immunity against Clostridium perfringens type D in lambs Odendaal, MW, Visser, JJ, Bergh, N & Botha, WJS 251

South African field strains of Haemonchus contortus resistant to the levamisole/morantel group of anthelmintics Van Wyk, JA, Van Schalkwyk, L, Van Schalkwyk, PC, Visser, EL, Alves, RMR & Gerber, HM 257

The biochemical differentiation between Salmonella and Citrobacter Van der Walt, ML & Steyn, HC 263

Geographical distribution and habitat preferences of the invader freshwater snail species Lymnaea columella (Mollusca : Gastropoda) in South Africa

De Kock, KN, Joubert, PH & Pretorius, SJ


An outbreak of contagious bovine pleuropneumonia in the Owambo Mangetti area of South West Africa/Namibia : microbiological, immunofluorescent, pathological and serological findings Trichard, CJV, Basson, PA, Van der Lugt, JJ & Jacobsz, EP 277

Research communications:

Serological evidence of bovine leptospirosis in Malawi Myburgh, JG, Staley, GP & Van der Merwe, SM 285

Afrotropical Culicoides : C. (Avaritia) spinifer Khamala & Kettle, 1971, a name based on an artefact (Diptera : Ceratopogonidae) Meiswinkel, R 287

The host status of the striped mouse, Rhabdomys pumilio, in relation to the tick vectors of heartwater in South Africa Horak, IG, Howell, DJ & Petney, TN 289

Author index 293

Subject index 299

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