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Effects of short-term grazing on bioactive forages on lambs artificially infected with Teladorsagia circumcincta

Published online by Cambridge University Press:  20 November 2017

O. Tzamaloukas ,
S. Athanasiadou ,
I. Kyriazakis ,
F. Jackson  and
R.L. Coop
O. Tzamaloukas
Affiliation:
Animal Nutrition & Health., SAC, West Mains Road, Edinburgh EH93JG, UK, o.tzamaloukas@ed.sac.ac.uk Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
S. Athanasiadou
Affiliation:
Animal Nutrition & Health., SAC, West Mains Road, Edinburgh EH93JG, UK, o.tzamaloukas@ed.sac.ac.uk
I. Kyriazakis
Affiliation:
Animal Nutrition & Health., SAC, West Mains Road, Edinburgh EH93JG, UK, o.tzamaloukas@ed.sac.ac.uk
F. Jackson
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
R.L. Coop
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
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Extract

Ruminants grazing on forages that contain condensed tannins (CT) have lower parasite burdens compared to those grazing on similar quality, tannin-free forages (Min and Hart, 2003). Evidence from previous grazing studies suggested that chicory, which contains only traces of CT, could also reduce the size of the parasite population carried by ruminants (Hoskin et al. 1999). Such bioactive plants may have direct anthelminthic effect on different developmental stages of the worms or indirect effects through nutritional improvement of host immunity. The purpose of this study was to determine whether short-term grazing of bioactive forages could affect either the established adult population or incoming infective larvae of Teladorsagia circumcincta a common abomasal parasite of sheep. The bioactive species tested were chicory (Chicorium intybus) and the CT-containing plants: lotus (Lotus pedunculatus), sainfoin (Onobrychis viciifolia) and sulla (Hedysarum coronarium).

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2004 , 2004 , pp. 6
Copyright
Copyright © The British Society of Animal Science 2004

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References

Hoskin, S.O., Barry, T.N., Wilson, P.R., Charleston, W.A.G., & Hodgson, J. 1999 Effects of reducing anthelmintic input upon growth and faecal egg and larval counts in young farmed deer grazing chicory (Cichorium intybus) and perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) pasture. Journal of Agricultural Science Cambridge 132, 335–345.Google Scholar
Min, B.R. & Hart, S.P. 2003 Tannins for suppression of internal parasites. Journal of Animal Science 81 (sup.2) E102–9 Google Scholar