Con el objetivo de evaluar el efecto que ejerce adicionar harina de carne en bloques multinutricionales (BMN) sobre la digestibilidad y el consumo voluntario de las diversas fracciones de la ración, se realizó un ensayo, utilizándose un diseño de experimento completamente al azar. Para tal fin se seleccionaron 25 ovinos mestizos en crecimiento (12-18 kg PV). Los animales se ubicaron en jaulas metabólicas, asignados a 5 tratamientos (5 animales/tratamiento): T0: heno de Brachiaria humidicola + minerales, T1: heno + BMN con 0% de harina de carne (HC), T2: heno + BMN con 4% de HC, T3: heno + BMN con 8% de HC y T4 : heno + BMN con 12% de HC. Se analizaron los consumos de: heno (CH), relativo de heno (CRH= % PV) de bloques (CB), relativo de bloques (CRB= % PV), de materia seca (MS, CMS=CH+CB), relativo de MS (CRMS= % PV), de materia orgánica (MO, CMO) y consumo relativo de MO (CRMO= % PV). Igualmente se analizaron las digestibilidades de la MS (DMS) y la MO, (DMO). El análisis de varianza no detectó diferencias en CH, CRH, CB y CRB. CMS, CMO, CRMS y CRMO (P<0,05) fueron significativamente superiores en los animales que consumieron BMN, obteniéndose valores para CRH, CRB, CRMS y CRMO de: 2,73, 3,11, 2,98, 3,07 y 2,85% PV; 0, 1,22, 1,09, 1,48 y 1,39% PV; 2,73, 4,33, 4,07, 4,55 y 4,25%PV; y de 2,65, 3,87, 3,64, 3,98 y 3,76% PV para T0, T1, T2, T3 y T4, respectivamente. Se observaron diferencias significativas para DMS (P<0,05) a favor de T1, T2, T3 y T4, no existiendo diferencias estadísticas para DMO con valores para ambas variables de: 39,4, 47,4, 42,4, 43,8 y 50,7% y de 42,2, 47,3, 43,9, 43,2 y 48,6% para T0, T1, T2, T3 y T4, respectivamente.
To evaluate the effect of adding meat meal in multinutritional blocks (MNB) on digestibility and voluntary intake of the different fractions of the ration, a trial was carried out, using a completely randomized design. Twenty five crossbred lambs (12 - 18 kg liveweight-LW) were selected. The animals were housed in metabolic stalls and asigned to five treatments: T0: Brachiaria humidicola hay ad libitum + mineral mix, T1: hay ad libitum + MNB with 0% of meat meal (MM), ad libitum, T2: hay ad libitum + MNB with 4% of MM, ad libitum, T3: hay ad libitum + MNB with 8% of MM ad libitum and T4: hay ad libitum + MNB with 12% OF MM, ad libitum. The hay intake (HI), relative intake of hay (RIH), MNB intake (BI), relative intake of MNB (RIB), dry matter intake (DMI = HI + BI), relative intake of dry matter (RIDM), organic matter intake (OMI), relative intake of organic matter (RIOM) and the digestibilities of DM (DMD) and OM (OMD) were analized. No statistical differences were detected for HI, RIH, BI and RIB. The OMI (P<0.05), RIDM and RIOM (P<0.01) were statisticaly differents between treatments. Values obtained for RIH, RIB, RIDM and RIOM were: 2.73, 3.11, 2.98, 3.07 and 2.85% LW; 0, 1.22, 1.09, 1.48 and 1.39% LW; 379, 617, 651, 658 and 642 g/animal/d, 2.73, 4.33, 4.07, 4.55 and 4.25% LW and 2.65, 3.87, 3.64, 3.98 and 3.76% LW for T0, T1, T2, T3 y T4, respectively. Statistical differences were detected for DMD (P<0.05), but not for OMD. Values obtained for both variables were: 39.4, 47.4, 42.4, 43.8 and 50.7% and 42.2, 47.3, 43.9, 43.2 and 48.6% for T0, T1, T2, T3 and T4, respectively.