Autores/as
Resumen
El uso de antibióticos a niveles subterapéuticos como promotores de crecimiento, generan preocupación a nivel mundial por la posible resistencia de algunos microorganismos a ciertos antibióticos, que podrían de manera potencial transferir genes resistentes desde los animales hacia la microbiota humana; existen alternativas como los probióticos y prebióticos, que estimulan la inmunidad del huésped y no tienen residuos en los productos de origen animal, por lo cual se pretende en esta investigación estudiar sus efectos en la nutrición porcina e identificar las principales falencias que se presentan en la experimentación que se realiza con estos. Los probióticos son microorganismos vivos que cuando se administran en la cantidad adecuada, le generan un efecto benéfico al huésped, disminuyen los problemas de salud y pueden aumentar la productividad, gracias a que con ellos se pueden afectar las proporciones de las diferentes especies de bacterias en la microbiota del tracto gastrointestinal. No obstante, en cuanto a su efecto como promotores de crecimiento los resultados son contradictorios, en gran medida por la diversidad de cepas, especies de microorganismos, dosis, la forma de administración; así como también la diferente composición de las dietas utilizadas en los bioensayos.
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