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1989 Onderstepoort Journal of Veterinary Research, Volume 56, 1989: Recent submissions
Now showing items 21-40 of 47
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(Published by the Government Printer, Pretoria., 1989)A Streptococcus species biochemically and serologically identical to the rainbow trout pathogenic Streptococcus species was isolated from the internal organs of the fish specific leech, Batracobdelloides tricarinata. These ...
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(Published by the Government Printer, Pretoria., 1989)Ten stocks of Cowdria ruminantium (Ball 3, Breed, Comoro, Germishuys, Kümm, Kwanyanga, Mali, Mara, Nonile and Welgevonden) were compared from a cross-immunity, serological and mouse pathogenicity point of view. They were ...
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(Published by the Government Printer, Pretoria., 1989)A procedure established for the selective isolation of the species of Streptococcus responsible for rainbow trout streptococcosis in South Africa, consisted of the inoculation of samples into nutrient broth which had been ...
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(Published by the Government Printer, Pretoria., 1989)Nineteen per cent and 32 % of serologically positive sheep and goats in heartwater endemic areas of the Republic of South Africa were susceptible to challenge with, respectively, the Ball 3 and Welgevonden stocks of Cowdria ...
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(Published by the Government Printer, Pretoria., 1989)A light-trap survey was undertaken of the species composition, seasonal abundance and parity of Culicoides at Roma, Lesotho, to establish whether the likely vectors for bluetongue and African horse sickness occur in this ...
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(Published by the Government Printer, Pretoria., 1989)Helminth parasites were collected from 13 grysbok, Raphicerus melanotis, 12 common duikers, Sylvicapra grimmia, 24 Angora goats and 24 Boer goats killed on a farm in Valley Bushveld in the eastern Cape Province. Nematodes ...
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(Published by the Government Printer, Pretoria., 1989)Synhelea Kieffer, 1925, is resurrected from synonymy to embrace 10 species of Afrotropical Culicoides. C. tropicalis Kieffer, 1913, is the subgenotype. C. vagus is made a synonym of C. dutoiti while apomorphies common to ...
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(Published by the Government Printer, Pretoria., 1989)Thiaminase type 1 and 2 activities and thiamine content of five plants were determined. Of these Pteridium aquilinum and Equisetum ramosissimum were found to have considerably more thiaminase activity and lower thiamine ...
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(Published by the Government Printer, Pretoria., 1989)Filter paper impregnated strips using cephalothin at 30 and 60 µg/ml and triphenyltetrazolium chloride at 20 mg/ml were prepared and used in the typing of catalase-positive Campylobacter species. There was no difference ...
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(Published by the Government Printer, Pretoria., 1989)Twenty sheep were dosed with either Pachystigma pygmaeum or Fadogia homblei belonging to the Rubiaceae. The experimentally-induced cardiotoxicoses were monitored by various clinical pathological parameters and heart ...
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(Published by the Government Printer, Pretoria., 1989)The narcotizing potential of various rectified current configurations on Oreochromis mossambicus was investigated. A 50 Hz, 200 Vp. half-wave rectified current, applied for 30 s, was found to be a suitable configuration ...
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(Published by the Government Printer, Pretoria., 1989)One bushbuck, Tragelaphus scriptus, and 1 common duiker, Sylvicapra grimmia, were shot each month from May 1983 to May 1984 in the Weza State Forest, Natal, i.e. a total of 13 animlas of each species. The bushbuck were ...
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(Published by the Government Printer, Pretoria., 1989)Blindness attributed to vitamin A deficiency afflicted 47 out of 197, and 15 out of 29 new-born dairy calves on 2 farms. Other clinical signs included doming of the forehead, thickening of the carpal joints, incoordination ...
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(Published by the Government Printer, Pretoria., 1989)Feeding under constant cold conditions resulted in a marginal shortening of feeding period and a major shortening of the subsequent developmental phase of all stages of Ixodes rubicundus Neumann 1904, the Karoo paralysis ...
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(Published by the Government Printer, Pretoria., 1989)In March 1978, a number of turkeys with severe respiratory symptoms affecting over 80 % of the flock were investigated for a possible causative agent. With the standard techniques used for the isolation of bacteriae, ...
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(Published by the Government Printer, Pretoria., 1989)Nematodirus abnormalis is a common nematode parasite of sheep on several farms in the Caledon district of the south-western Cape and is the major species of Nematodirus on a farm in the Riviersonderend mountains of this ...
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(Published by the Government Printer, Pretoria., 1989)The investigation involved 37 herds of cattle numbering 6 280 animals and 5 groups of blue wildebeest (Connochaetes taurinus), consisting of 30-330 wildebeest per group. All the cases of wildebeest-derived malignant catarrhal ...
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Excretion of alcelaphine herpesvirus-1 by captive and free-living wildebeest (Connochaetes taurinus) (Published by the Government Printer, Pretoria., 1989)Excretion of alcelaphine herpesvirus-1 (AHV-1) is for all practical purposes limited to wildebeest calves under the age of 4 months. Sixty-one per cent of calves 1-2 months of age excreted virus with a mean titre of 9,8 x ...
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(Published by the Government Printer, Pretoria., 1989)Screening of a genomic library of Cowdria ruminantium has yielded twelve clones hybridizing to Cowdria DNA. These clones should be suitable for development into DNA probes specific for this organism.
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(Published by the Government Printer, Pretoria., 1989)Bovine ephemeral fever (BEF) was diagnosed on several commercial farms around Harare, Zimbabwe. The affected animals showed signs of fever (40-41,5 °C), depression, ruminal stasis, lameness and recumbency. Eight of those ...
Now showing items 21-40 of 47