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The pathogenesis of a single challenge dose of Haemonchus contortus in lambs under six months of age

Published online by Cambridge University Press:  18 November 2009

A. R. Hunter
Affiliation:
Ministry of Agriculture, Fisheries and Food, Veterinary Laboratory, Eskgrove, Lasswade, Midlothian, Scotland
Grace Mackenzie
Affiliation:
Ministry of Agriculture, Fisheries and Food, Veterinary Laboratory, Eskgrove, Lasswade, Midlothian, Scotland

Abstract

The pathogenesis of H. contortus infection in lambs under 6 months of age challenged orally with 10,000 third stage infective larvae is described. The development of the parasite and its relationship to haematological and pathological changes are discussed, with particular reference to specific cellular mobilizations, and detailed descriptions are given of the haematology and parasitology, gross pathology and histopathology at 4, 7, 12, 18, 22 and 35 days after infection. Dramatic changes had developed by day 12.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1982

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