The response of Awassi sheep to re-infection with Haemonchus contortus larvae
- 6 April 1980
- journal article
- research article
- Published by Cambridge University Press (CUP) in Parasitology
- Vol. 80 (2) , 233-240
- https://doi.org/10.1017/s0031182000000706
Abstract
Summary: The response of Awassi sheep to primary infection with 10000 Haemonchus contortus larvae and subsequent challenge with 20000 larvae was studied. Two types of response to re-infection were observed. The first, characterized by a sharp decline in egg counts, progressive improvement in packed cell volume (PCV) and a marked loss of adult worms and challenge larvae, was considered as self-cure and protection. In the second type of response there was a temporary decline in egg counts, no improvement in PCV and necropsy findings indicated hyperinfection with challenge larvae.This publication has 12 references indexed in Scilit:
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