Cambios en la microbiota intestinal de las aves y sus implicaciones prácticas

  • Rodrigo Medardo Abad-Guamán Carrera de Medicina Veterinaria y Zootecnia, Facultad Agropecuaria y de Recursos Naturales Renovables, Universidad Nacional de Loja, La Argelia EC 110150. Loja-Ecuador.
  • Mirian Capa-Morocho Carrera de Ingeniería Agronómica, Facultad Agropecuaria y de Recursos Naturales Renovables, Universidad Nacional de Loja, La Argelia EC 110150. Loja-Ecuador.
  • Vanessa Herrera Yunga Carrera de Zootecnia, Facultad de Ciencias Pecuarias, Escuela Superior Politécnica de Chimborazo
  • Rocio Herrera Herrera Carrera de Medicina Veterinaria, Unidad Académica de Agricultura, Silvi- cultura, Pesca y Veterinaria, Universidad Católica de Cuenca, Panamericana Norte y Crnel. Rremigio Machuca EC010108. Cuenca - Ecuador
  • Galo Escudero Sanchez Carrera de Medicina Veterinaria y Zootecnia, Facultad Agropecuaria y de Recursos Naturales Renovables, Universidad Nacional de Loja, La Argelia EC 110150. Loja-Ecuador.
Palabras clave: microbiota, salud intestinal, antibióticos, bioseguridad.


El objetivo de esta revisión es ofrecer una visión general del estado actual del conocimiento sobre la dinámica temporal y espacial de la microbiota intestinal de las aves. Diversos cambios temporales en la microbiota intestinal ocurren desde la pre-eclosión hasta que el animal llega a ser adulto. Uno de los más importantes cambios ocurre inmediatamente tras el nacimiento, donde se genera la mayor colonización del tracto digestivo por bacterias ambientales. Por otra parte, los cambios espaciales se dan por las condiciones heterogéneas en las diferentes secciones del tracto digestivo. Mientras el tracto digestivo se encuentra más distal al pico, incrementa la diversidad y cantidad de microorganismos. Así, en los ciegos se encuentra la más estable y diversa microbiota intestinal; mientras que la microbiota del intestino delgado predominantemente está compuesta por Lactobacilus que son más fácilmente influenciables por las dietas. Por lo tanto, para evitar que bacterias patógenas colonicen el tracto digestivo y potenciar el establecimiento de una microbiota beneficiosa es necesario centrar la bioseguridad y uso de aditivos (como probióticos y prebióticos) en el nacimiento y recibimiento del pollito. Esto podría ayudar a maximizar los índices productivos y reducir los problemas sanitarios en granja, con la consecuente reducción del uso de antibióticos.


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