- UPSpace Home
- →
- South African National Veterinary Repository
- →
- Onderstepoort Journal of Veterinary Research
- →
- 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990
- →
- Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Issue Date
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Issue Date
Now showing items 1-20 of 50
-
(Published by the Government Printer, Pretoria., 1990)Babesia caballi, isolated from a horse that originated from South West Africa/Namibia, was transmitted transovarially by adult Hyalomma truncatum. B. caballi proved to be highly infective for adult H. truncatum. Forty-five ...
-
(Published by the Government Printer, Pretoria., 1990)Brucella melitensis biotype 1 was isolated in pure culture from the lungs, liver, spleen, kidney, stomach contents, abomasum and brain of an aborted caprine (Boer goat) foetus in the district of Cullinan, near Pretoria. ...
-
(Published by the Government Printer, Pretoria., 1990)An unidentified Babesia sp. which causes a mild disease in cattle was isolated in a splenectomized ox that received pooled blood from field cattle. That this organism is pleomorphic and resembles Babesia occultans makes ...
-
(Published by the Government Printer, Pretoria., 1990)Data collected on both free-living and parasitic tick populations are likely to be overdispersed. The use of means from few replicate samples of overdispersed data as quantitative estimators of tick population density is ...
-
(Published by the Government Printer, Pretoria., 1990)A survey by means of questionnaires was conducted along the Orange River to determine the extent of blackfly annoyance to livestock during 1984-1988. Severe annoyance reached peaks during September-November and increased ...
-
(Published by the Government Printer, Pretoria., 1990)One-day-old leghorn chickens were used in a laboratory assay to determine the toxicity of crude extracts of the tick Argas (Persicargas) walkerae and of fractions obtained during the isolation procedure. Extracts of unfed ...
-
(Published by the Government Printer, Pretoria., 1990)Infective larvae of selected batched of the following nematode species from sheep and cattle were examined for survival and infectivity (by injection into either the abomasum, the duodenum, or the jugular vein) after having ...
-
(Published by the Government Printer, Pretoria., 1990)A strain of Trichostrongylus colubriformis from Nottingham Road, in Natal, was found to be solidly resistant to levamisole and morantel at the recommended dose levels. Untreated control sheep in fact harboured fewer worms ...
-
(Pretoria : Government Printer, 1990)The ileocaecal junction mucosal surface morphology of 5 horses and 1 donkey was examined using scanning electron microscopy and light microscopy. Based on differences in surface morphology, the junction could be divided ...
-
(Published by the Government Printer, Pretoria., 1990)Oesophagostomum mocambiquei Ortlepp, 1964 was described from 9 females recovered from a warthog, Phacochoerus aethiopicus (Pallas, 1766), from northern Mozambique. Large numbers of O. mocambiquei were recovered during ...
-
(Published by the Government Printer, Pretoria., 1990)The investigation involved 52 cases of wildebeest-derived malignant catarrhal fever in 1986 and 1989 in a herd of cattle kept in camps adjacent to a game farm harbouring a herd of approximately 330 blue wildebeest (Connochaetes ...
-
(Published by the Government Printer, Pretoria., 1990)Theiler & Robinson (1953) described, as Rhipicephalus follis Dönitz, 1910, a tick species originating from Dordrecht, Eastern Cape Province. A comparison of this tick with the syntypes of R. follis has now shown, though, ...
-
(Published by the Government Printer, Pretoria., 1990)Temperature-humidity index (THI) values applicable to South Africa and Namibia have been established during this investigation for each month of the year by means of computerized modelling and mapping techniques. The data ...
-
(Published by the Government Printer, Pretoria., 1990)After being passaged through 3 generations of Amblyomma hebraeum, an Ehrlichia-like agent isolated from an adult Hyalomma truncatum female became more pathogenic and elicited a disease in sheep indistinguishable from ...
-
(Published by the Government Printer, Pretoria., 1990)Parafilariosis was first described in South Africa in 1964, thereafter being discovered at numerous localities in the country. When it became obvious that Parafilaria bovicola, for which no treatment was known, caused ...
-
(Published by the Government Printer, Pretoria., 1990)Four hundred and six serum samples from buffalo (Syncerus caffer) were tested for leptospirosis, using the microscopic agglutination test. Seven buffaloes (1,7%) reacted positive and 27 (6,6%) inconclusive. Reactions against ...
-
(Published by the Government Printer, Pretoria., 1990)This investigation has shown that collateral intramammary reactions (CIR's) occur when secretory disturbances in one quarter lead to corresponding changes in one or more of the other, unperturbed, quarters of the same ...
-
(Published by the Government Printer, Pretoria., 1990)
-
(Published by the Government Printer, Pretoria., 1990)An attempt to establish an inbred line of mice resistant to Cowdria ruminantium failed. First generation couples were constituted from those mice out of 100 males and 100 females that had survived infection with the Kümm ...
-
(Published by the Government Printer, Pretoria., 1990)Under experimental conditions an African face fly (Musca xanthomelas) preferred to feed on cattle dung when provided with a choice of 3 different meals namely sucrose, cattle dung and blood. Flies starved overnight fed ...
Now showing items 1-20 of 50