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Population dynamics of Trichostrongylus colubriformis in sheep: The effect of infection rate on loss of adult parasites

Dobson, R.J., Waller, P.J. and Donald, A.D. (1990) Population dynamics of Trichostrongylus colubriformis in sheep: The effect of infection rate on loss of adult parasites. International Journal for Parasitology, 20 (3). pp. 359-363.

Link to Published Version: http://dx.doi.org/10.1016/0020-7519(90)90152-D
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Abstract

Rejection of adult T. colubriformis was examined in lambs given 2000, 1124, 632 or 200 L3 day-1, 5 days per week for up to 20 weeks. Rejection of adults began at approximately the same time for the first three infection rates, and took about 9 weeks to complete. Approximately 20% of adults were rejected by week 10 of infection at the higher infection rates and it was estimated that rejection commenced at about week 7. This coincided with a decline in establishment of larvae to about 1%. For the low infection rate, there was a delay of about 5 weeks before adult worm rejection commenced and reached equivalent levels to those observed at the higher rates. This delay also coincided with an estimated 5-week delay in larval establishment declining to 1% at the low rate.

Item Type: Journal Article
Publisher: Elsevier BV
Copyright: © 2007 Elsevier B.V.
URI: http://researchrepository.murdoch.edu.au/id/eprint/7899
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