Signs of multiple anthelmintic resistance in sheep gastrointestinal nematodes in Sweden

Abstract

Gastrointestinal nematodes in small ruminants are clinically and economically important parasites that often are controlled with anthelmintics. In this study, we compiled information on the anthelmintic efficacy collected on sheep farms according to routines established by Farm & Animal Health in Sweden. The efficacies of benz-imidazoles (i.e. albendazole or fenbendazole, n = 30), ivermectin (n = 47), levamisole (n = 2) or moxidectin (n = 2) were examined between 2015 and 2021 in 81 treatment groups on 49 non-randomly selected farms in south-central Sweden. Drug efficacies were estimated with the faecal egg count reduction test. In addition, ef-ficacy data were in most cases supplemented with data on the abundance of the three most common nematode genera in sheep by performing droplet digital (dd) PCR on coprocultures. Efficacies of

Keywords

Faecal egg count reduction test; McMaster; Digital droplet PCR; Haemonchus

Published in

Veterinary Parasitology: Regional Studies and Reports
2022, volume: 36, article number: 100789
Publisher: ELSEVIER

SLU Authors

• Höglund, Johan

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Baltrusis, Paulius

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Enweji, Nizar

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

Associated SLU-program

AMR: Parasite

UKÄ Subject classification

Clinical Science
Animal and Dairy Science

Publication identifier

• DOI: https://doi.org/10.1016/j.vprsr.2022.100789

Permanent link to this page (URI)

https://res.slu.se/id/publ/123319