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The Control of a Parasitic Nematode Population in Sheep Represented by a Discrete Time Network with Stochastic Inputs

G. Paton and G. Gettinby
Proceedings of the Royal Irish Academy. Section B: Biological, Geological, and Chemical Science
Vol. 83B (1983), pp. 267-280
Published by: Royal Irish Academy
Stable URL: http://www.jstor.org/stable/20494421
Page Count: 14
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Control of a Parasitic Nematode Population in Sheep Represented by a Discrete Time Network with Stochastic Inputs
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Abstract

The control of ostertagiasis, a parasitic disease endemic in sheep, has been examined using a discrete time network representation of the life-cycle of Ostertagia circumcincta. The system is developed for the case of stochastic inputs which enables the extent of variability in adult worm burdens in sheep to be determined during the grazing season. Disease levels are examined in relation to various recognised control techniques based on pasture switching and anthelmintic drug treatment.

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