Características epidemiológicas y clínicas de la infección por Cryptosporidium spp. en granjas porcinas intensivas de Argentina

Autores/as

  • Hernan José Lovera Departamento de Patología Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto.
  • Bibiana Pelliza Departamento de Patología Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto.
  • Mercedes Vázquez Departamento de Patología Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto.

Resumen

Los cerdos son muy susceptibles a infecciones por varias especies de Cryptosporidium. Es usualmente una enfermedad subclínica. Los patrones de infección, duración e importancia económica permanecen sin reportes. En Argentina hay escasos estudios que hayan determinado la prevalencia en los cerdos, características epidemiológicas y clínicas.
El objetivo del presente estudio fue determinar la presencia y distribución de Cryptosporidium spp. en cerdos de granjas intensivas de Argentina, y las características de consistencia y color de las fecas. Se muestrearon 22 establecimientos. De cada uno de ellos se tomaron muestras de materia fecal de 10 cerdos de 8, 15 y 22 semanas de edad. Se determinó presencia de ooquistes de Cryptosporidium y cantidad de ooquistes por gramo (opg) de materia fecal, consistencia, color y su relación con la presencia/ausencia del agente, con la edad, cantidad de opg y tipo de piso utilizado. Se concluyó que Cryptosporidium es un agente prevalente en granjas intensivas de Argentina. Se detectó en el 86,4% de los establecimientos relevados (prevalencia intrapredial del 6,66% al 26,66%). Es prevalente en animales de 8 y 15 semanas de edad. Parece no ser frecuente en 22 semanas de edad. La materia fecal de animales positivos fue mayormente de color amarronada (hasta amarillenta) y consistencia cremosa (hasta líquida). El 89% de los animales positivos mostraron disminución en la consistencia de la materia fecal. Los niveles de opg mayores se observaron en éste tipo de materias fecales. Finalmente, existiría una probable asociación entre el tipo de piso (enrejillado/sólido) y porcentaje de animales positivos.

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DOI: https://doi.org/10.5281/zenodo.7484725

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12/30/2022

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Lovera, H. J. ., Pelliza, B., & Vázquez, M. (2022). Características epidemiológicas y clínicas de la infección por Cryptosporidium spp. en granjas porcinas intensivas de Argentina. Ab Intus, (10), 1–17. Recuperado a partir de http://www.ayv.unrc.edu.ar/ojs/index.php/Ab_Intus/article/view/36

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