Resistance of Haemonchus contortus to rafoxanide in sheep

Authors

  • Marco Aurélio M. Santiago
  • Ubiratã Cereser da Costa
  • Sérgio Fauque Benevenga
  • Nei Macedo

DOI:

https://doi.org/10.1590/S1678-3921.pab1982.v17.16291

Keywords:

infestation, strain, parasites, anthelmintic

Abstract

A controlled anthelmintic test was carried out in experimentally infested sheep to verify the action of rafoxanide on an Haemonchus contortus strain labelled as a resistant one to the drug. This suspected resistant strain was obtained from the sheep breeded in a farm at Uruguaiana country, Rio Grande do Sul, Brazil. The drug produced no reduction when it was used in a dose of 7.5 mg/kg, but it produced a 50 percent reduction when used in a dose of 15 mg/kg.

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How to Cite

Santiago, M. A. M., Costa, U. C. da, Benevenga, S. F., & Macedo, N. (2014). Resistance of Haemonchus contortus to rafoxanide in sheep. Pesquisa Agropecuaria Brasileira, 17(9), 1361–1362. https://doi.org/10.1590/S1678-3921.pab1982.v17.16291

Issue

v.17, n.9, set. 1982

Section

VETERINARY SCIENCE