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Comparing control strategies for parasitic gastroenteritis in lambs grazed on previously contaminated pasture - a network modeling approach

Paton, G. and Gettinby, G. (1985) Comparing control strategies for parasitic gastroenteritis in lambs grazed on previously contaminated pasture - a network modeling approach. Preventive Veterinary Medicine, 3 (3). pp. 301-310. ISSN 0167-5877

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Abstract

In practice, protection against ovine ostertagiasis in sheep-management systems is generally achieved by anthelmintic treatment and pasture switching. This paper uses a network model to describe the dynamics of the life-cycle of the parasite when ewes and lambs commence spring grazing on pasture which is contaminated. The model enables the efficacy of several recognised control strategies, involving various frequencies of drug application, to be assessed in regulating the adult worm burden of the lamb. The results indicate that dosing ewes at lambing does not provide adequate control. If lambs only are dosed 6 times between May and September significant control is achieved. Combining ewe and lamb treatments only marginally enhances the level of control obtained by the treatment of lambs alone. However, the most effective method of control was to dose lambs 3 times in May-June and on moving lambs to clean pasture at weaning.

Item type: Article
ID code: 17804
Keywords: control strategies, parasitic gastroenteritis, lambs, network modeling, Animal culture, Probabilities. Mathematical statistics, Food Animals, Animal Science and Zoology
Subjects: Agriculture > Animal culture
Science > Mathematics > Probabilities. Mathematical statistics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 10 May 2010 16:22
    Last modified: 05 Sep 2014 00:30
    URI: http://strathprints.strath.ac.uk/id/eprint/17804

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