South African field strains of Haemonchus contortus resistant to the levamisole/morantel group of anthelmintics
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| dc.contributor.author | Van Schalkwyk, P.C.
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| dc.contributor.author | Visser, Evelyn L.
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| dc.contributor.author | Alves, Regina M.R.
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| dc.contributor.author | Gerber, H.M.
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| dc.contributor.editor | Verwoerd, Daniel Wynand | |
| dc.contributor.upauthor | Van Wyk, Jan Aucamp | |
| dc.contributor.upauthor | Van Schalkwyk, Louwrens | |
| dc.date.accessioned | 2014-10-02T11:25:07Z | |
| dc.date.available | 2014-10-02T11:25:07Z | |
| dc.date.created | 2014 | |
| dc.date.issued | 1989 | |
| dc.description | The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format. | en |
| dc.description.abstract | A strain of Haemonchus contortus from the Pietermaritzburg district of Natal was found to be resistant to levamisole (geometric mean efficacy 76,5 %), morantel (41,9 %), the benzimidazoles (oxfendazole: 33,7 %) and rafoxanide (82,0% ), but apparently fully susceptible to closantel and disophenol. In the case of ivermectin, a mean of 5.2 % of the H. contortus was not removed at a dosage of 200 µg kgˉ¹ live mass. A second strain of H. contortus, from Amsterdam in the south-eastern Transvaal, showed reduced susceptibility to levamisole (80,8%) and morantel (46,2% ), the only 2 drugs tested. This is apparently the first report of resistance to the levamisole/morantel group of anthelmintics in sheep in South Africa. | en |
| dc.description.librarian | lmchunu2014 | en |
| dc.description.librarian | mn2014 | |
| dc.identifier.citation | Van Wyk, JA, Van Schalkwyk, PC, Gerber, HM, Visser, EL, Alves, RMR & Van Schalkwyk, L 1989, 'South African field strains of Haemonchus contortus resistant to the levamisole/morantel group of anthelmintics', Onderstepoort Journal of Veterinary Research, vol. 56, no. 4, pp. 257-262. | en |
| dc.identifier.issn | 0330-2465 | |
| dc.identifier.uri | http://hdl.handle.net/2263/42219 | |
| dc.language.iso | en | en |
| dc.publisher | Published by the Government Printer, Pretoria. | en |
| dc.rights | ©ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©University of Pretoria. Dept. of Library Services (digital). | en |
| dc.subject | Veterinary medicine | en |
| dc.subject.lcsh | Veterinary medicine -- South Africa | |
| dc.title | South African field strains of Haemonchus contortus resistant to the levamisole/morantel group of anthelmintics | en |
| dc.type | Article | en |
