The effect on the persistence and pattern of nematode infestation of the transfer of naturally infected sheep from pasture to pens

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Abstract
Extract In a number of circumstances, helminthologicalstudies would be considerably facilitatedby the transfer of naturally-infected sheep from pasture to pens to enable them to be maintained without further re-infestation. However, at present few data are available concerning the effects of such a transfer upon the persistence and pattern of an existing infestation following the removal of the animals from the source of infection and the sudden marked change of diet. The present work provides information on this point.