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- Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Title
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Browsing 1990 Onderstepoort Journal of Veterinary Research, Volume 57, 1990 by Title
Now showing items 30-49 of 50
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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)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 ...
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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)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)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)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)In the course of three experiments it was established that all the toxic effects of a lethal dose of Albizia versicolor pods (> 4,5g/kg) in guinea-pigs could be countered by concurrent subcutaneous injection of pyridoxine ...
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(Published by the Government Printer, Pretoria., 1990)Field collections of ticks from two breeds of cattle in the North Western Transvaal showed the common tick species to be Rhipicephalus appendiculatus, Amblyomma hebraeum, Rhipicephalus evertsi evertsi and Hyalomma marginatum ...
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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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(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 ...
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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)
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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)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)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 ...
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(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, ...
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(Published by the Government Printer, Pretoria., 1990)The investigation involved 4 mastitis-free cows, exposed to 168 h of suspended milking to induce prolonged milk stasis and premature mammary regression during mid-lactation. After 48 h the milk stasis elicited mastitis-like ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Filter paper discs impregnated with solutions containing 0,25, 0,5 and 1 mg/ml of thionin acetate, 0,75 and 1,5 mg/ml of basic fuchsin and 0,5 mg/ml of thionin blue were used in the typing of Brucella species. All the ...
Now showing items 30-49 of 50