Stankiewicz M, Cabaj W, Pernthaner A, Hadas E. Immunisation of sheep by drug-abbreviated infections of Ostertagia circumcincta and Trichostrongylus colubriformis against field challenge of gastro-intestinal nematodes.
Vet Parasitol 1996;
67:121-32. [PMID:
9011021 DOI:
10.1016/s0304-4017(96)01028-x]
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Abstract
A very high level of protection was achieved against homologous (up to 97%) and heterologous (up to 87%) infections in 12-month-old Romney sheep immunised with oxfendazole-abbreviated infections of Ostertagia circumcincta and Trichostrongylus colubriformis. No significant protection occurred following ivermectin-abbreviated infections. None of the immunised sheep showed an increase in antibody level against excretory-secretory antigen of T. colubriformis infective larvae. The immunisation procedures did not cause a decrease in wool production, or liveweight gains compared with non-immunised controls.
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