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Efecto de tres tipos de presentación de alimento preparado con raíz y follaje de yuca (Manihot esculenta crantz) sobre la digestibilidad aparente en cerdos

Source: OAI

ABSTRACT Con el objeto de determinar en cerdos la digestibilidad total aparente de los tres tipos de presentación del alimento preparado con raíz y follaje de yuca (Manihot esculenta crantz), se llevó a cabo un experimento en la Sección de Porcinos y en la Unidad de Metabolismo de Aves y Cerdos, de la Facultad de Agronomía de la Universidad Central de Venezuela, se utilizaron 15 lechones machos castrados mestizos provenientes de cruces entre las razas Landrace, Yorkshire, Hampshire y Duroc, con 30±2 kg de PV, alojados en jaulas metabólicas. En un diseño experimental totalmente aleatorizado, con 5 repeticiones, donde los tratamientos correspondieron a: T1 Harina seca; T2 Harina humedecida y T3 Pasta, la cual consta de un molido de la raíz y follaje fresco luego de una inclusión de un complemento proteico y un cocinado que dura entre 30 y 50 segundos a 65°C. A los cerdos se les suministró una dieta equivalente al 8% del peso metabólico (PV 0.75), fraccionada en dos porciones, 8:30am y 4:30pm. El período experimental total duro 10 días, 5 de adaptación a dieta y 5 días de recolección de muestras. Las muestras se colectaron en horario previo al suministro de la ración, una vez obtenida la muestra esta fue pesada, homogeneizada y deshidratada en estufa a 65°C y enviada al laboratorio para las determinaciones de MS, MO, PC, FDN y Energía. A los datos del laboratorio para las determinaciones de MS, MO, FDN y energía hubo un aumento en la digestibilidad en el tratamiento de alimento tipo pasta (T3) con 87.82%, 89.55%, 95.04% y 85.04% respectivamente, por otro lado entre los tratamientos Harina seca (T1) y Harina humedecida (T2) no hubo diferencias significativas (P>0.05). No se observaron diferencias significativas (P>0.05) para la fracción PC. Se concluyó que el alimento ofrecido en forma de pasta, a base de raíz y follaje de yuca, es un recurso con una alta calidad nutricional y una digestibilidad superior a 87% de MS el cual puede ser usado en la alimentación no convencional de cerdos, ya que mejora la digestibilidad total aparente de los nutrientes de la pasta.

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