Abstract
Hong C., Michel J. F. and Lancaster M. B. 1987. Observations on the dynamics of worm burdens in lambs infected daily with Ostertagia circumcincta. International Journal for Parasitology 17: 951–956. Groups of lambs were infected daily with either 250, 500 or 1000 Ostertagia circumcincta larvae and the course of their worm burdens by post mortem examination at five intervals of time was studied. The number of worms appeared to be related to the rate of intake of larvae. A morphometric study of female worm lengths and observations on the incidence of reduced vulval flaps indicated that the population of worms turned over rapidly. The response of a small number of lambs appeared to be abnormal.
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