| Tannins and self-medication: Implications for sustainable parasite control in herbivores. | |
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MedLine Citation:
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PMID: 19576969 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Animals adapt to the variability of the external environment and to their changing internal needs not only by generating homeostatic physiological responses, but also by operating in the external environment. In this study, we determined whether sheep with a gastrointestinal parasite infection increased intake of a low-quality food containing a natural antiparasitic agent (tannins) relative to non-parasitized sheep. Four groups of lambs (n=8 lambs/group) were assigned to a 2 x 2 factorial design with parasitic burden (P=parasites; NP=no parasites) and the offer of a supplement containing tannins (yes, no) as the main factors. Parasitized lambs ate more of the tannin-containing food than non-parasitized lambs for the first 12 days of the study, when parasite burdens were high, but differences became smaller and disappeared toward the end of the study when parasite burdens decreased. This result suggests the lambs detected the presence of internal parasites or associated symptoms and modified their ingestion of an antiparasitic agent as a function of need. |
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Authors:
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Larry D Lisonbee; Juan J Villalba; Fred D Provenza; Jeffery O Hall |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-07-02 |
Journal Detail:
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Title: Behavioural processes Volume: 82 ISSN: 1872-8308 ISO Abbreviation: Behav. Processes Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-08-18 Completed Date: 2009-12-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7703854 Medline TA: Behav Processes Country: Netherlands |
Other Details:
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Languages: eng Pagination: 184-9 Citation Subset: IM |
Affiliation:
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Department of Wildland Resources, Utah State University, Logan, UT 84322, USA. larry.lisonbee@aggiemail.usu.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed Animals Dietary Supplements Dose-Response Relationship, Drug Feces / parasitology Food Preferences* Nematode Infections / parasitology, therapy* Parasite Egg Count / veterinary Regression Analysis Sheep / parasitology*, psychology Sheep Diseases / parasitology, prevention & control* Tannins / administration & dosage* |
| Chemical | |
Reg. No./Substance:
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0/Tannins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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