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Effects of continuous intake of condensed tannins on parasitised sheep

Published online by Cambridge University Press:  20 November 2017

S. Athanasiadou ,
I. Kyriazakis ,
R.L. Coop  and
F. Jackson
S. Athanasiadou
Affiliation:
Animal Biology Division, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
I. Kyriazakis
Affiliation:
Animal Biology Division, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
R.L. Coop
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
F. Jackson
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
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Extract

Parasitised sheep consuming forages high in condensed tannins (CT) show lower faecal egg counts (FEC) and total worm burden (TWB) compared to those consuming CT free forages (Niezen et al., 1998). This may be due to an indirect effect of CT, through an increase in protein availability; extra protein could improve the host’s ability to mount an effective response towards gastrointestinal parasites, during the expression of the immunity (Coop and Kyriazakis, 1999). However, CT have been also shown to have a direct anthelmintic effect on adult Trichostrongylus colubriformis (intestinal nematode), when they were administered for a short period (Athanasiadou et al., 2000). The objectives of this experiment were i) to elucidate the effects of a continuous intake of CT during the development of a T.colubriformis infection and ii) to test whether these effects are dose dependent.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2000 , 2000 , pp. 35
Copyright
Copyright © The British Society of Animal Science 2000

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References

Athanasiadou, S., Kyriazakis, I., Jackson, F. and Coop, R.L. (2000) Effects of short term exposure to condensed tannins on adult Trichostrongylus colubriformis. Veterinary Record (In Press).CrossRefGoogle Scholar
Coop, R.L. and Kyriazakis, I. (1999) Parasite-nutrition interaction. Veterinary Parasitology 84: 187–204.CrossRefGoogle ScholarPubMed
Niezen, J.H., Robertson, H.A., Waghorn, G.C. and Charleston, W.A.G. (1998) Production, faecal egg counts and worm burdens of ewe lambs which grazed six contrasting forages. Veterinary Parasitology 80: 15–27.CrossRefGoogle ScholarPubMed