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Browsing 1999 Onderstepoort Journal of Veterinary Research, Volume 66, 1999 by Title
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Groenewald, Hermanus B.; Soley, John Thomson; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
An accurate description of the number, location and relative position of the air sacs and their diverticula
in the ostrich is essential for a better understanding of the pathogenesis of air sacculitis in this
bird. The ...
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Van Wyk, Jan Aucamp; Stenson, M.O.; Van der Merwe, J.S.; Vorster, R.J.; Viljoen, P.G.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Surveys to determine the prevalence and degree of resistance of Haemonchus spp. of sheep and
goats to the available anthelmintics in South Africa indicate that small ruminant production is entering
a crisis situation ...
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Dreyer, K.; Fourie, L.J.; Kok, D.J.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
This questionnaire survey was conducted amongst 200 farmers in the resource-poor, urban and periurban
environments of Botshabelo and Thaba Nchu towns in the Free State Province of South Africa.
The questionnaire was ...
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Grobler, D.G.; Swan, Gerry E.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Induction of chronic copper poisoning in ten boma-confined impala was attempted in a randomized,
single dose, parallel designed, titration study using five increasing oral doses, ranging between 125
mg/kg to 1000 mg/kg, ...
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Verwoerd, Daniel Wynand
(Pretoria : Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
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Anonymous; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
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Reynes, J.M.; Soares, J.L.; Keo, C.; Ong, S.; Heng, N.Y.; Vanhoye, B.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
In order to provide relevant therapeutic answers to human patients exposed to risk of rabies infection
who visit the lnstitut Pasteur du Cambodge for post-exposure treatment and to improve control of
rabies in Cambodia, ...
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Muraguri, G.R.; Gitau, P.K.; Mwangi, Michael N.; Mbogo, S.K.; Kariuki, D.P.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Appraisal of the indirect fluorescent antibody test (IFAT) and antigen enzyme linked immunosorbent
assay (ELISA) serological tests as carried out to detect cattle exposed to Theileria parva at the National
Veterinary ...
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Waweru, J.G.; Kanyari, P.W.N.; Mwangi, D.M.; Ngatia, T.A.; Nansen, P.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Twelve Red Masai and 12 Dorper sheep aged between 6 and 9 months, were acquired from a flukefree area and sheep of each breed divided into two equal groups of six. Each animal in one group of each breed was experimentally ...
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Van Wyk, Jan Aucamp; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
The infectivity for sheep of cryopreserved infective larvae (L3) of various strains of Haemonchus contortus, Trichostrongylus colubriformis and Trichostrongylus axei is compared using previously published results of trials ...
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Miflin, J.K.; Chen, X.; Bragg, R.R. (Robert Richard); Welgemoed, J.M.; Greyling, J.M.; Horner, R.F.; Blackall, P.J.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Seventy five bacteria tentatively identified as Haemophilus paragallinarum (the causative agent of infectious coryza), eight identified as Ornithobacterium rhinotracheale and 13 identified as NAD-independent Pasteurella ...
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Kerber, C.E.; Ferreira, F.; Pereira, M.C.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
The importance of equine piroplasmosis control in endemic countries has increased in recent years
and plays an important role to maintain the international market open to the horse industry. The purpose
of this study was ...
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Grobler, D.G.; Swan, Gerry E.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Chronic copper poisoning was investigated in ruminants within the Phalaborwa area of the Kruger National Park (KNP). Exposure of ruminants to environmental copper pollution resulting from copper smelting operations of a ...
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Grobler, D.G.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
A geobotanical and environmental investigation was undertaken to investigate the potential for copper
poisoning in wild ruminants within the Phalaborwa area in the Kruger National Park and to confirm
that environmental ...
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Oelofsen, M.J.; Van der Ryst, E.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
The inter-epizootic reservoir host of Rift Valley fever virus (RVFV) remains unknown, although the namaqua rock rat, Aethomys namaquensis, as well as bats have been implicated. Bats can be asymptomatically infected with ...
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Fehrsen, Jeanni; Collins, Nicola E.; Allsopp, Basil A.; Brayton, Kelly A.; De Villiers, E.P.; Nxomani, C.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
A Cowdria ruminantium genomic library was constructed in a cosmid vector to serve as a source of
easily accessible and pure C. ruminantium DNA for molecular genetic studies. The cosmid library
contained 846 clones which ...
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Mushi, E.Z.; Binta, M.G.; Chabo, R.G.; Mathaio, M.; Ndebele, R.T.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
The mean flock size was ten chickens per rural farmer. Antibodies to Mycoplasma gallisepticum and Mycoplasma synoviae were detected in 57,88 % and 67,33 % of the chicken sera respectively.
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Aloo, P.A.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
The parasites of 541 largemouth bass, Micropterus salmoides, were studied over a period of 12 months.
The results showed that the bass from Lake Naivasha are paratenic hosts of Contracaecum sp. larva
and final hosts for ...
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Njiro, S.M.; Kofi-Tsekpo, M.W.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
lmmunopotentiating agents are useful in enhancing resistance to infections in individuals whose immunocompetence
is compromised for one reason or another.
Because of the very wide spectrum of infectious and non·infectious ...
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Du Plessis, J.L.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Electron microscopy of mouse peritoneal macrophages infected with the Kümm stock of Cowdria
ruminantium suggests that in the final stage of intracellular growth, a mosaic of organisms develops
from an amorphous matrix ...