1984 Onderstepoort Journal of Veterinary Research, Volume 51, 1984

1984 Onderstepoort Journal of Veterinary Research, Volume 51, 1984


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


Volume 51: Number 1

A scanning and transmission electron-microscopy study of jaagsiekte lesions Verwoerd, DW & Payne, A-L 1

Fluctuations in the glucose level of cow's milk from normal and subclinically diseased udders Petzer, I-M, Giesecke, WH & Durand, AM 15

Parocooperia devossi n. sp. (Nematoda: Trichostrongylidae) from the bushbuck, Tragelaphus scriptus (Pallas, 1766) Boomker, J & Kingsley, SA 21

Studies on Haemonchus contortus. IX. The effect of Trichostrongylus axei in Merinos on natural pasture Reinecke, RK, De Villiers, IL & Bruckner, C 25

Studies on Haemonchus contortus. X. The effect of Trichostrongylus axei in Merinos on artificial pastures Reinecke, RK, De Villiers, IL & Joubert, G 33

A study for the differentiation of Actinobacillus-seminis, A-Actinomycetem-comitans, Histophilus-ovis and Pasteurella-haemolytica Swanepoel, ML 41

Electron microscopic observations on the luminal surface of teat cup liners of milking machines used under South African conditions Giesecke, WH, Spickett, AM, Durand, AM, Van Staden, JJ & Erasmus, JA 47

Studies on Haemonchus contortus. XI. The effect of a bovine strain of Trichostrongylus axei in Merinos on natural pastures heavily infested with H. contortus Reinecke, RK, De Villiers, IL & Joubert, G 71

Studies on Haemonchus contortus. XII. Effect of Trichostrongylus axei in Dorper lambs on natural pasture lightly infested with H. contortus Reinecke, RK, De Villiers, IL, Lombard, MS & Scialdo-Krecek, RC 81

Research communication:

Acid production by flavivirus-infected Vero and Cer cell cultures Barnard, BJH 89

Volume 51: Number 2

Furunculosis in rainbow trout (Salmo gairdneri) raised in sea water Huchzermeyer, FW, Boomker, J, Henton, MM & Naude, TW 91

Further physiopathological features of experimental Homeria glauca (Wood and Evans) N.E.Br. poisoning in Merino sheep Button, C & Mulders, MSG 95

Factors affecting the immunogenicity of Pasteurella haemolytica in mice Cameron, CM, Bester, FJ & Du Toit, DJ 97

Measurements of mass, length and valve diameters from normal formalin-fixed ovine hearts Newsholme, SJ, Van Ark, H & Howerth, EW 103

Seasonal abundance and distribution of Parafilaria bovicola ovipositional blood spots on cattle in South Africa Nevill, EM 107

The longevity of adult Parafilaria bovicola and the persistence of their associated carcass lesions in cattle in South-Africa Nevill, EM & Viljoen, JH 115

Pathology of a nervous disorder (pushing disease or "stootsiekte") in cattle caused by the plant Matricaria nigellifolia DC. (Asteraceae) Newsholme, SJ, Kellerman, TS & Welman, WG 119

Parasites of South African freshwater fish. II. Redescription of the African species of the genus Phyllodistomum Braun, 1899 (Trematoda: Gorgoderinae) and the description of a new species Boomker, JDF 129

Laboratory and field trials with two Bacillus thuringiensis var. israelensis products for Simulium (Diptera: Nematocera) control in a small polluted river in South Africa Car, M 141

Parasites of domestic and wild animals in South-Africa. XVII. Arthropod parasites of Burchell's zebra, Equus burchelli, in the eastern Transvaal Lowveld Horak, IG, De Vos, V & De Klerk, BD 145

Volume 51: Number 3

The response of Vaal River drift and benthos to Simulium (Diptera: Nematocera) control using Bacillus thuringiensis var. israelensis (H-14) Car, M & De Moor, FC 155

The helminth fauna of the digestive tracts of chacma baboons, Papio ursinus, from different localities in the Transvaal Pettifer, HL 161

Records of the bont tick, Amblyomma hebraeum, from the angulate tortoise, Chersina angulata, and the leopard tortoise, Geochelone pardalis Walker, JB & Schulz, KCA 171

Seasonal prevelance of ixodid ticks on cattle in the Windhoek District of South West Africa/Namibia Biggs, HC & Langenhoven, JW 175

Arthropod parasites of Hartmann's mountain zebra, Equus zebra hartmannae, in South West Africa/Namibia Horak, IG, Biggs, HC & Reinecke, RK 183

Formulation of an effective Pasteurella multocida vaccine for sheep Cameron, CM & Bester, FJ 189

The immunization of calves against heartwater : subsequent immunity both in the absence and presence of natural tick challenge Du Plessis, JL, Bezuidenhout, JD & Ludemann, CJF 193

Investigations into the volatility of female pheromones and the aggregation-inducing property of guanine in Argas (Persicargas) walkerae Neitz, AWH & Gothe, R 197

Immunity against genital infection by Histophilus-ovis in rams Jansen, BC & Hayes, M 203

Plasminogen activator activity in secretions from clinically normal, mastitic, lactating and dried-off udders of dairy cows Kowalski, ZE, Franz, RC, Coetzee, WJC & Giesecke, WH 209

Research communication:

Demonstration of Cowdria ruminantium in Amblyomma hebraeum by fluorescent antibody techniques, light and electron microscopy Bezuidenhout, J & Bezuidenhout, JD 213

Volume 51: Number 4

Methods of infesting sheep with gastro-intestinal nematodes after cryopreservation : dosing of larvae in gelatin capsules compared to dosing of larvae in water suspension Van Wyk, JA, Gerber, HM & Alves, RMR 217

The relation of climate and topography to worm egg counts of gastrointestinal nematodes of sheep in the Eastern Cape McCulloch, B, Kuhn, HG & Dalbock, RR 223

Serodiagnosis of bovine besnoitiosis by ELISA and immunofluorescence tests Bigalke, RD, Janitschke, K & De Vos, AJ 239

Preparation and properties of a crude extract toxic to guinea-pigs from Pachystigma pygmaeum, a plant causing heart failure in ruminants Verschoor, JA & Potgieter, DJJ 245

Bacteriological findings regarding the hygienic safety of poultry litter intended as an ingredient of feeds for ruminants Ogonowski, K, Barnard, M-L & Giesecke, WH 249

The helminths of various antelope species from Natal Horak, IG, Boomker, JDF, Keep, ME & Flamand, JRB 253

Studies on the parasites of zebras. IV. Cylicodontophorus reineckei n.sp. (Nematoda: Strongylidae) from the Burchell's zebra, Equus burchelli antiquorum H. Smith, 1841 and the mountain zebra, Equus zebra hartmannae Matschie, 1898 Scialdo-Krecek, RC & Malan, FS 257

An improved Corynebacterium pseudotuberculosis vaccine for sheep Cameron, CM & Bester, FJ 263

The acquisition of immunity to Histophilus ovis by sheep in nature Jansen, BC & Hayes, M 269

A tremorgenic mycotoxicosis of cattle caused by maize sprouts infested with Aspergillus clavatus Coetzer, JAW, Kellerman, TS, Van der Westhuizen, GCA & Newsholme, SJ 271

Research communications:

Colostrum-derived antibodies to Cowdria ruminantium in the serum of calves and lambs Du Plessis, JL 275

Resistance of sheep to poisoning by the plant, Matricaria nigellifolia DC Newsholme, SJ & Kellerman, TS 277

Author index 279

Subject index 283

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