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Importancia de la utilización de diferentes tecnicas de digestibilidad en la nutricion y formulacion porcina

Importancia de la utilización de diferentes tecnicas de digestibilidad en la nutricion y formulacion porcina



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Parra, J., & Goméz Z, A. (2009). Importancia de la utilización de diferentes tecnicas de digestibilidad en la nutricion y formulacion porcina. Journal MVZ Cordoba, 14(1). https://doi.org/10.21897/rmvz.372

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Jaime Parra
Andrés Goméz Z

El valor nutricional de una ración para cerdos, puede ser expresado mediante el coeficiente de digestibilidad y según el lugar de colecta de la muestra se determina el tipo de digestibilidad: 1) Digestibilidad ileal (DI), tiene como finalidad incrementar la exactitud en la determinación del aporte de los nutrimentos, mediante la utilización de animales modificados quirúrgicamente. 2) Digestibilidad fecal (DF), es una técnica simple de realizar, sin embargo, la proporción digestible de un nutrimento es modificada por las bacterias del intestino grueso, observándose un cambio en el perfil de aminoácidos del contenido ileal con respecto al perfil en las heces. Independientemente del lugar y de la técnica empleada para la obtención de la muestra, se pueden determinar varios tipos de digestibilidad: 1) Digestibilidad aparente (DA), con este método no se conoce la proporción de la proteína y/o aminoácidos (AA) que provienen de la dieta o de la secreción de nitrógeno endógeno (NE), y solo permite asumir que cantidad del alimento fue asimilado por el animal. 2) Digestibilidad verdadera (DV), contempla la excreción de NE en sus cálculos, por lo cual ofrece un valor más exacto de la digestión de algún alimento. 3) Digestibilidad real, es determinada mediante la corrección de la DA de los AA por la cantidad de AA endógenos usando una técnica de dilución isotópica. 4) Digestibilidad estandarizada, es calculada mediante la corrección de la DA por las pérdidas endógenas mínimas de AA usando un flujo promedio de AA endógenos.

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