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1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990: Recent submissions
Now showing items 21-40 of 50
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(Published by the Government Printer, Pretoria., 1990)The prevalence of Salmonella in southern Africa in farm feeds and by-products of animal origin during 1982-1988 was determined. Salmonella occurred in 5,18% of the farm feed samples and in 9,54% of the by-product samples. ...
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(Published by the Government Printer, Pretoria., 1990)Poisoning with the plant Lasiospermum bipinnatum was studied in 9 lambs at various dose levels. Dyspnoea and tachypnoea, which were dose-related, were observed in 4 of the lambs. Gross and microscopic pulmonary lesions ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Poisoning with the plant Lasiospermum bipinnatum was studied in 9 lambs. Intraruminal doses, varying from 1-12 g/kg/day of dried plant, were administered to 8 animals and 1 was fed 2,5 g/kg/day of the material mixed with ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Trials were conducted to compare a modification of a commercial medium with the 2 media currently used at the Veterinary Research Institute, Onderstepoort, for the isolation of Trichomonas foetus. An antifungal agent was ...
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(Published by the Government Printer, Pretoria., 1990)ST-segment changes in the ECG, which are an indication of acute myocardial ischaemia, are obtained when a small quantity of an extract from dried Pachystigma pygmaeum is injected intravenously in sheep. When the fraction ...
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(Pretoria : Government Printer, 1990)
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(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 ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)To investigate the cardiac cellular effects of tyledoside F, a cumulative neurotoxic bufadienolide and ouabain, a non-cumulative cardenolide, the whole-cell clamp method was used to measure the Na-K pump current after the ...
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(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 ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Nematode eggs were collected by mixing the faeces with a sugar solution, filling a flat-sided medicine bottle (100 ml), and allowing eggs to float and adhere to the upper surface for 30 min. After discarding the faeces, ...
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(Published by the Government Printer, Pretoria., 1990)Leukoencephalomalacia (LEM) was induced by the oral administration of fumonisin B₁ (FB₁) to 2 horses: a filly received 59,5mg/kg of a 50% preparation of FB₁ administered in 21 doses of 1,25-4mg/kg over 33 days; a colt, ...
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(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 ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Mycobacterium fortuitum was isolated from 3 species of freshwater fish in South Africa for the first time. The bacterium was isolated from oscars, guppies and discus fish from different sources. Heavy mortalities as a ...
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(Published by the Government Printer, Pretoria., 1990)Studies were made on the duration of the prehatch period of Boophilus decoloratus and on the subsequent survival and viability of larvae under natural conditions. The length of the prehatch and larval survival periods was ...
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(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 ...
Now showing items 21-40 of 50