Digestibilidad in vivo de forrajeras arbustivas tropicales para la alimentación de cuyes (Cavia porcellus Linnaeus), en el litoral ecuatoriano.

Tropical shrub forage in vivo digestibility for guinea pigs feeding (Cavia porcellus Linnaeus), in the Ecuadorian Littoral.

The chemical-bromatological composition (Weende) and in vivo digestibility of four forage shrubs was analyzed. In order to estimate the value of digestible energy (DE) 20 male guinea pigs with a mean weight of 900 g were used. A complete randomized design (CRD) with five treatments and four replications was applied. For mean analysis between treatments the Tukey test (P=0.05) was applied. Variables under study were: nutrients content 100 g DM-1, crude protein (CP), dry matter (DM), crude fiber (CF), organic matter (OMD). Digestibility of the following variables was determined: dry matter (DMD), organic matter (OMD), crude protein (CPD), crude fiber (CFD), ether extract (EED), free nitrogen extract (FNED), digestible energy (DED), total digestible nutrients (TDND), and ashes (AD). The evaluated treatments were: T0 = Diet (control), T1 = Morus alba Flour, T2 = Erythrina poeppigiana Flour, T3 = Tithonia diversifolia Flour and T4 = Hibiscus rosa-sinensis Flour. The treatments T0, T2 and T1 registered the best nutrient contents for CP (22.34%), CF (47.22%), DM (84.55%) and OMD (83.77%). The highest digestibility coefficients (P<0.01) were obtained by T0 = DM, OMD and TDN (73.55, 72.90 and 95.40%), T3 = CP, CF and EE (88.70, 84.42 and 83.59%) and T2 = Ash (91.68%), whilst for DE a value of 3546.00 kcal g/DM was registered. [ABSTRACT FROM AUTHOR]

Se analizó la composición química bromatológica de cuatro arbustivas forrajeras y la digestibilidad in vivo. Para estimar el valor de la energía digestible (ED), se utilizaron 20 cuyes machos con un peso promedio de 900 g. Se aplicó un diseño completo al azar (DCA) con cinco tratamientos y cuatro repeticiones. Para la separación de medias de tratamientos se aplicó la prueba de Tukey (P=0,05). Las variables bajo estudio fueron: contenido de nutrientes 100 g MS- 1 proteína cruda (PC), materia seca (MS), fibra cruda (FC), materia orgánica (MO). Se determinaron las digestibilidades de la materia seca (DMS), materia orgánica (DMO), proteína cruda (DPC), fibra cruda (DFC), extracto etéreo (DEE), extracto libre de nitrógeno (DELN), energía digestible (DED), nutrientes digestibles totales (DNDT) y cenizas (DC). Los tratamientos evaluados fueron: T0 (testigo), T1 (Harina de Morus alba), T2 (Harina de Erythrina poeppigiana), T3 (Harina de Tithonia diversifolia) y T4 (Harina de Hibiscus rosa-sinensis). Los tratamientos T0, T2 y T1 registraron los mejores contenidos de nutrientes para la PC (22,34%), FC (47,22), MS (84,55%) y MO (83,77%). Los mayores (P<0,01) coeficientes de digestibilidad in vivo (CDIV) los obtuvieron los tratamientos T0 (DMS: 73,55; DMO: 72,90 y DNDT: 95,495), T3 (DPC: 88,70; DFC: 84,42 y DEE: 83,59%) y T2 (DC: 91,68%), mientras que para la DED se registra un valor de 3.546,00 kcal de ED/kg. [ABSTRACT FROM AUTHOR]