Evaluaciones sobre la eficacia clínica de la ivermectina en el control de los pequeños estróngilos equinos (Cyathostoma spp). Status de susceptibilidad o resistencia en establecimientos del área central de la Argentina
The small strongyles (or Cyathostomins) comprise more than 50 species and are the most common parasites of adult horses worldwide. Control is based on the massive use of anthelmintics, which is allowing the development of resistance. The Fecal Egg Count Reduction Test (FECRT) is currently the most w...
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| Autores principales: | , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional del Litoral
2023
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| Acceso en línea: | https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEveterinaria/article/view/12495 |
| Aporte de: |
| Sumario: | The small strongyles (or Cyathostomins) comprise more than 50 species and are the most common parasites of adult horses worldwide. Control is based on the massive use of anthelmintics, which is allowing the development of resistance. The Fecal Egg Count Reduction Test (FECRT) is currently the most widely used method to detect anthelmintic resistance, while the Egg Reappearance Period (ERP) can act as an early indicator of resistance. This study evaluated the activity of macrocyclic lactones (ivermectin and moxidectin) in 192 horses from 15 farms in the central area of Argentina using the FECRT and a Bayesian hierarchical model for data analysis. The same methodology was used on week seven post treatment to detect possible shortening in the ERP. The general efficacy of macrocyclic lactones at 14 days post-treatment was very high in all farms (99.8%-100%) with just one of these showing a shortening of the ERP. A more selective use of these drugs in Argentina is necessary to preserve their useful life and maintain the sustainability of these chemical control alternatives. |
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