Assessment of the efficacy of commercial anthelmintics in horses naturally infected with gastrointestinal nematodes

Autores

  • Natália Soares Martins Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas-RS, Brasil.
  • Diego Moscarelli Pinto Departamento de Veterinária Preventiva, Universidade Federal de Pelotas, Pelotas-RS, Brasil.
  • Laís Leal da Cunha Departamento de Plantas Forrageiras e Agrometeorologia, Universidade Federal do Rio Grande do Sul. Porto Alegre-RS, Brasil.
  • Júlia Somavilla Lignon Departamento de Microbiologia e Parasitologia, Universidade Federal de Santa Maria. Santa Maria-RS, Brasil.
  • Thais Cozza dos Santos Departamento de Veterinária Preventiva, Universidade Federal de Pelotas, Pelotas-RS, Brasil.
  • Tainá Ança Evaristo Departamento de Veterinária Preventiva, Universidade Federal de Pelotas, Pelotas-RS, Brasil.
  • Felipe Geraldo Pappen Departamento de Veterinária Preventiva, Universidade Federal de Pelotas, Pelotas-RS, Brasil.
  • Leandro Quintana Nizoli Departamento de Veterinária Preventiva, Universidade Federal de Pelotas, Pelotas-RS, Brasil.

DOI:

https://doi.org/10.26605/medvet-v15n1-2354

Palavras-chave:

equine, anthelmintic resistance, cyathostomins

Resumo

The objective of this study was to assess the efficacy of commercial anthelmintics in horses naturally infected with gastrointestinal nematodes from the southern Rio Grande do Sul state, Brazil. The anthelmintic efficacy was assessed by fecal egg count reduction test (FECRT) and coproculture. Fecal samples were collected from 110 animals in seven farms located in the southern region of the state of Rio Grande do Sul, in the south of Brazil. Criteria used to suspect anthelmintic resistance included percentages of efficacy lower than 95% and a lower limit of the confidence interval below 90%. Anthelmintic resistance was detected in five of the seven farms studied. Coproculture results show that, even after horses were treated with anthelmintics, infection by nematodes of the subfamily Cyathostominae was still present in animals from five farms.

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Publicado

2021-04-07

Edição

Seção

Medicina Veterinária Preventiva