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The aim of this study was to evaluate the inclusion of INIAP 811 grass and Tithonia diversifolia in five proportions (100:0, 75:25, 50:50, 25:75, 0:100 respectively on dry basis), on the bromatological composition, in vitro digestibility and in vitro gas production in the dry season. The treatments were T1= 100% grass INIAP 811; T2= 75% INAP 811 grass and 25% T. diversifolia; T3= 50% INAP 811 grass and 50% T. diversifolia; T4= 25% INAP 811 grass and 75% T. diversifolia and T5= 100% T. diversifolia. The variables for the bromatological composition: dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF). For in vitro dry matter digestibility (IVDMD), neutral detergent fiber (NDF) and acid detergent fiber (ADF). In vitro gas production from dry matter (B) and gas production rate (C). The best (p

Introduction.The Mocache canton (Ecuador) is a humid tropical zone, with a dry season of six months, which affects the availability and quality of forage, a situation that reduces the productive and reproductive capacity of ruminants.Objective.To evaluate the apparentin vitroruminal degradation parameters of dry matter (DMD), organic matter (OMD), neutral detergent fiber (NDFD), and acid detergent fiber (ADFD) inTithonia diversifoliaharvested at four different cutting ages during the dry season. Materials and methods. The research was carried out at the “La María” Experimental Farm of the Universidad Tecnica Estatal de Quevedo, Ecuador, between August and October 2017. Four rumen fistulated bulls were used. A complete randomized design (CRD) was used. The treatments were:Tithonia diversifoliaat 30 days of cutting (T1),Tithonia diversifoliaat 45 days of cutting (T2),Tithonia diversifoliaat 60 days of cutting (T3), andTithonia diversifoliaat 75 days of cutting (T4). The incubation times were: 3, 6, 12, 24, 48, and 72 hours with four replicates per treatment. The variables evaluated were: DMD, OMD, NFDD, and AFDD.Results.The ruminal degradation parameters showed statistical differences between treatments (p

Agronomic behavior and nutritional value of Morus alba were evaluated at different ages. The variables for agronomic behavior: plant height (PH) (m); leaf biomass per plant (LBP g MS plant-1); stem biomass per plant (SBP g MS plant-1); leaf / stem ratio grams (SRG/ T g); forage biomass per plant (FBP) (g); productivity (Prod) (t MS ha-1). Chemical composition: dry matter (DM); organic matter (OM); crude protein (CP); neutral detergent fiber (NDF) and acid detergent fiber (ADF). In vitro digestibility: dry matter (IVDDM); organic matter (IVDOM); neutral detergent fiber (IVDNDF) and acid detergent fiber (IVDADF). Treatments: T1: Morus alba 40 days of harvest; T2: Morus alba 55 days of harvest; T3: Morus alba 70 days of harvest; T4: Morus alba 85 days of harvest. A Complete Random Design with four treatments and four repetitions was used. The highest (P

The morphoagronomic characteristics along with production yield, bromatological composition and the apparent in vitro digestibility of four cutting ages in Tithonia diversifolia during the dry season were evaluated. A Block Design was used, entirely at random, with four treatments and four repetitions per treatment: T1: Tithonia diversifolia 30 days of cutting; T2: Tithonia diversifolia 45 days of cutting; T3: Tithonia diversifolia 60 days of cutting y T4: Tithonia diversifolia 75 days of cutting. The best morphoagronomic characteristics (plant heights, leaf/stem ratio #, leaf weight per plant, stem weight per plant, leaf weight, stem weight, absolute growth rate, biomass per plant and production) were found at 75 days of cutting (1.71 m; 13.24 #; 99.00 g/MS; 217.92 g/MS; 0.61 g MS; 15.94 g MS; 7.46 g MS/day; 316.92 g MS/plant and 5.62 t DM/ha, respectively) and the best leaf/stem ratio was found at 30 days of cutting g (1.65 g/MS). The dry and organic matter shown their higher rates at 75 days of cutting (21.80 and 84.85%, respectively) whilst crude protein reached it at 30 and 45 days of cutting (24.68 and 22.60%, respectively). Neutral acid detergent fiber (P>0.05). Dry and organic matter digestibility (P>0.05). The best digestibilities for neutral detergent fiber and acid detergent fiber were found at 30 and 75 days of cutting (62.15 and 61.90; 61.18 and 59.70%, respectively). This results propose Tithonia diversifolia to be considered an alternative food source for animal feed Se evaluaron las características morfoagronómica, rendimiento de producción, composición bromatológica y la digestibilidad in vitro aparente de cuatro edades de corte en Tithonia diversifolia durante la época seca. Se utilizó un diseño de completamente al azar con cuatro tratamientos y cuatro repeticiones por tratamiento: T1: Tithonia diversifolia 30 días de corte; T2: Tithonia diversifolia 45 días de corte; T3: Tithonia diversifolia 60 días de corte y T4: Tithonia diversifolia 75 días de corte. Las mejores alturas de plantas, relación hoja/tallo #, peso de hoja por planta, peso de tallo por planta, peso de hoja, peso de tallo, tasa absoluta de crecimiento, biomasa por planta y la producción, fueron a los días 75 (1.71 m; 13.24 #; 99.00 g/MS; 217.92 g/MS; 0.61 g MS; 15.94 g MS; 7.46 g MS/día; 316.92 g MS/planta y 5.62 t MS/ha, respectivamente) y la relación hoja/tallo g a los días 30 (1.65 g/MS). La mejor materia seca y materia orgánica fue a los días 75 (21.80 y 84.85%, respectivamente). Así mismo, la proteína cruda a los días 30 y 45 (24.68 y 22.60%, respectivamente). La fibra detergente neutra y fibra detergente ácida, no registraron diferencias entre tratamientos (P>0.05). La digestibilidad de la materia seca y materia orgánica no presentaron diferencias entre tratamientos (P>0.05). Las mejores digestibilidades de la fibra detergente neutra y fibra detergente ácida fue a los días 30 y 75 (62.15 y 61.90; 61.18 y 59.70%, respectivamente). Se concluye que el forraje de Tithonia diversifolia puede considerarse una fuente alternativa alimenticia para la alimentación animal