Journal article
Population dynamics of Trichostrongylus colubriformis in sheep: The effect of host age on the establishment of infective larvae
International Journal for Parasitology, Vol.20(3), pp.353-357
1990
Abstract
Sheep, reared worm-free in pens and aged 12-36 weeks, were infected each weekday with 2000 infective T. colubriformis larvae (L3). Establishment was measured at various times during the course of infection and the rate of development of resistance to new infection was found to be faster in older than in younger hosts. In addition arrested development at the exsheathed L3 stage was found to be less marked in older hosts. Sheep which had experienced natural infection on pasture up to 20 weeks of age before exposure, in pens, to the same experimental infections as their worm-free counterparts showed similar immune responses. However, at 36 weeks of age, pasture-reared sheep had acquired a high level of resistance to infection with T. colubriformis.
Details
- Title
- Population dynamics of Trichostrongylus colubriformis in sheep: The effect of host age on the establishment of infective larvae
- Authors/Creators
- R.J. Dobson (Author/Creator)P.J. Waller (Author/Creator)A.D. Donald (Author/Creator)
- Publication Details
- International Journal for Parasitology, Vol.20(3), pp.353-357
- Publisher
- Elsevier BV
- Identifiers
- 991005540646007891
- Copyright
- © 2007 Elsevier B.V.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Citation topics
- 1 Clinical & Life Sciences
- 1.163 Parasitology - General
- 1.163.1022 Anthelmintic Resistance
- Web Of Science research areas
- Parasitology
- ESI research areas
- Microbiology