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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 14-33 of 50
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(Published by the Government Printer, Pretoria., 1990)The immunity conferred by an A. pyogenes bacterin-toxoid was evaluated in sheep, using an intravenous challenge system. Three sheep were vaccinated and 3 served as controls. The vaccinated sheep were not protected against ...
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(Published by the Government Printer, Pretoria., 1990)Carrion-frequenting blow-flies (Chrysomyia albiceps and C. marginalis) were allowed 4 days of feeding on ³²P-orthophosphate-labelled blood or an Impala carcass (Aepyceros melampus) in the northern Kruger National Park, ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)Samples of 6, 1st generation larval populations of Boophilus decoloratus, originating from field collected females, were subjected to increasing doses of the organophosphate acaricide, Dioxathion. The dose-response ...
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(Published by the Government Printer, Pretoria., 1990)Lyophilized tissues of mice and blood of sheep, infected with either the Kumm, the Welgevonden or the Ball 3 stock of Cowdria ruminantium, remain infective to mice and sheep after storage at 4ºC for 90 days. Freeze-dried ...
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(Published by the Government Printer, Pretoria., 1990)The Livestock Weather Safety Index (LWSI) indicates that in large areas of South Africa and South West Africa / Namibia and for prolonged periods of the year warm conditions are causing heat stress in food producing animals, ...
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(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 ...
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(Published by the Government Printer, Pretoria., 1990)November-March are the hottest months of the year with the highest monthly mean "temperature-humidity index" (THI) in South Africa and Namibia. These 5 months are associated with severe heat stress in dairy cattle, are of ...
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(Published by the Government Printer, Pretoria., 1990)The teguments of adult Schistosoma mattheei from cattle and buffalo, S. hippopotami from hippopotamus and S. margrebowiei from lechwe were examined by means of scanning electron microscopy for cells possibly engaged in ...
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(Published by the Government Printer, Pretoria., 1990)Immunoblotting of Cowdria ruminantium proteins with sheep or bovine antiserum identified 2 antigenically conserved proteins, one being an immunodominant 31 kDa and the other a minor 27 kDa protein. These proteins are present ...
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(Published by the Government Printer, Pretoria., 1990)The ileocaecal junctions of 5 horses and 2 donkeys were examined by using antisera to the following peptides: somatostatin, glucagon, gastrin, neurotensin, vasoactive intestinal peptide (VIP), peptide histidine isoleucine ...
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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)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. ...
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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)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)Although the histological features and endocrine cells of the gastro-intestinal tract of the chicken have been well studied, little is known about these features of the gut of the ostrich. The present study was undertaken ...
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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 ...
Now showing items 14-33 of 50