The Efficacy of Oxfendazole Against a Strain of Haemonchus contortus Resistant to Fenbendazole and Thiophanate

Authors

  • S.J.A. Msangi Faculty of Veterinary Medicine, Sokoine University of Agriculture
  • A.J. Ngomuo Faculty of Veterinary Medicine, Sokoine University of Agriculture
  • A.A. Kassuku Faculty of Veterinary Medicine, Sokoine University of Agriculture

Keywords:

Worms, Anaemia, Antimicrobial Resistance, Antihelmintics

Abstract

A critical controlled test was conducted to determine the efficacy of Oxfendazole against a strain of Haemonchus contortus isolated at Sokoine University of Agriculture (SUA) and known to be resistant to Fenbendazole and Thiophanate. A susceptible strain for comparison was obtained from Kimamba in Kilosa District. Based on post-mortem worm counts, the efficacy of Oxfendazole at the recommended dose of 5mg/kg body weight was 99.8% against Kimamba-strain but only 15% against SUA-strain. The results show that SUA-strain of H.contortus is highly resistant to Oxfendazole at the recommended dose

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Published

30-03-1990

How to Cite

Msangi, S., Ngomuo, A. and Kassuku, A. . (1990) “The Efficacy of Oxfendazole Against a Strain of Haemonchus contortus Resistant to Fenbendazole and Thiophanate”, Tanzania Veterinary Journal, 10(1), pp. 1–7. Available at: https://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/351 (Accessed: 21 April 2026).

Issue

Vol. 10 No. 1 (1990)

Section

RESEARCH ARTICLES

License

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