Studies on Haemonchus contortus. XII. Effect of Trichostrongylus axei in Dorper lambs on natural pasture lightly infested with H. contortus

dc.contributor.authorReinecke, R.K.
dc.contributor.authorDe Villiers, I.L.
dc.contributor.authorLombard, Magdalena S.
dc.contributor.authorScialdo-Krecek, Rosina C.
dc.contributor.editorBigalke, R.D.
dc.date.accessioned2015-10-19T12:15:52Z
dc.date.available2015-10-19T12:15:52Z
dc.date.created2015
dc.date.issued1984
dc.descriptionThe 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_ZA
dc.description.abstractWeaned Dorper lambs on natural pasture were predosed with 40 000 infective larvae (L₃) of Trichostrongylus axei, irradiated (0,3 kGy) L₃ of T. axei or closantel at 10 mg/kg either in September or November 1978 and were compared with Merino yearlings predosed with 40 000 L₃ of T. axei in November 1977. The following summer (December- March) only 178,6 mm of rain fell and very few H. contortus were present on pastures. Artificial challenge with 20 000 L₃ of Haemonchus contortus with the local strain from the University of Pretoria's experimental farm was given 6--7 months after predosing with T. axei. When compared with the controls, significant reductions occurred only in Group 11 (T. axei irradiated at 0,3 kGy on Day +63) (P=0,025); Group 2 (T. axei on Day 0) (P = 0,003) and Group 4 (T. axei and closantel on Day 0) (P = 0,049). We concluded that predosing with T. axei was unsuccessful in Dorpers and Merinos artificially challenged 6--7 months later with H. contortus.en_ZA
dc.description.librarianam2015en_ZA
dc.description.sponsorshipDepartment of Agriculture.en_ZA
dc.identifier.citationReinecke, RK, De Villiers, IL, Lombard, MS & Scialdo-Krecek, RC 1984, 'Studies on Haemonchus contortus. XII. Effect of Trichostrongylus axei in Dorper lambs on natural pasture lightly infested with H. contortus', Onderstepoort Journal of Veterinary Research, vol. 51, no. 1, pp. 81-88.en_ZA
dc.identifier.issn0330-2465
dc.identifier.urihttp://hdl.handle.net/2263/50253
dc.language.isoenen_ZA
dc.publisherPublished by The Government Printer, Pretoriaen_ZA
dc.rights©ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©University of Pretoria. Dept. of Library Services (digital).en_ZA
dc.subjectVeterinary medicineen_ZA
dc.subject.lcshVeterinary medicine -- South Africa
dc.titleStudies on Haemonchus contortus. XII. Effect of Trichostrongylus axei in Dorper lambs on natural pasture lightly infested with H. contortusen_ZA
dc.typeArticleen_ZA

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