Maestría en Agroecología y Ambiente

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Subject: search.filters.subject.DEGRADACIÓN RUMINAL

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    Efecto de la fertilización orgánica sobre la calidad nutricional de Lolium multiflorum (RYEGRASS) en el cantón Cevallos
    (2017) Garcés Pico, Santiago Fernando; Pérez Salinas, Marco Oswaldo
    The objective of this research was to evaluate the nutritional quality of Lolium multiflorum (RYEGRASS) , fertilized with different organic fertilizers. Using a male bovine of about 120 kg. ruminal degradation in situ MS was determined., using the technique of the nylon bag in the rumen and digestibility. The results show that T4 corresponding to treatment Blend fertilizer has a yield of forage biomass greater than the other treatments (1101.1 kg DM / ha), crude protein T4 treatment corresponding to treatment mix fertilizers has the higher value than the other treatments (12.9). Acid detergent fiber takes its highest value in the treatment T2 corresponding to treatment of chicken manure and has the value of (35.65). Contrary to the results of the acid detergent fiber, the fiber neutral detergent has the highest value treatment T1 corresponding to the control (70.23), the potential for Degradation Ruminal Dry Matter, has the highest value in the treatment T2 corresponding to treatment of chicken manure (76.7), indicating that the more organic fertilizer nitrogenous contributed to growing Ryegrass (Lolium multiflorum) the greater the amount of acid detergent fiber result in the ruminal debrability is faster and can include in the diet of bovines improving rumen functions and reducing GHG emissions. Descriptors: organic fertilizers, biomass, nutritional quality, ruminal degradation, digestibility, fertilization, fodder, hens, sheep, pastures.
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    Cinética de degradación ruminal y producción de gas in vitro del rastrojo de Amaranthus cruentus en bovinos
    (2016) Oña Rodríguez, José Daniel; Rodríguez Barros, Marcos Antonio
    The aim of this research was to evaluate the ruminal degradation kinetics of dry matter, apparent digestibility of dry matter, in vitro rumen protozoa and in vitro gas production in cattle. A bull provided with a cannula in the rumen (ruminal degradation and rumen fluid donation) was used. It was evaluated; ruminal degradation of dry matter, in vitro digestibility of dry matter, in vitro gas production and population in vitro rumen protozoa. Treatments: T1: 100% amaranth stubble, T2: kikuyo 100%, T3: stubble amaranth 25% + Kikuyo 75%, T4: amaranth stubble 50% + Kikuyo 50%. Digestibility and in vitro gas production was higher and lower respectively, only treatments with amaranth (T1), only kikuyu (T2) and in proportions of 50:50 of kikuyo and amaranth (T4). The population of rumen protozoa in vitro from hour 0 to 12 showed no differences (P> 0.05) between treatments in both stocks Entodiniomorfos and Holotrichs. From of hour 24 to 48 the holotrichs protozoa showed the differences between treatments (P <0.05). The soluble fraction (A) shows differences (P <0.05) between treatments. The insoluble but potentially degradable fraction shows differences (P <0.05) between treatments and T1 showed higher (0.054% / h: P <0.05) percentage degradation rate per hour (c) that other treatments. It is concluded that the use of diets with unconventional foods such as Amaranthus cruentus helps reduce the amount of protozoa and thus the production of greenhouse gases.
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    Cinética de degradación ruminal in situ y producción de gas in vitro de residuos de poscosecha Theobroma cacao L. ensilado
    (2016) Mayorga Paredes, Sixto Edmundo; Barros Rodríguez, Marcos Antonio
    The aim of this study was to evaluate the effect of husk cocoa silage (CMC) on the kinetics of degradation of dry matter (DMS), apparent dry matter digestibility (IVDMD), protozoa population of rumen (PPR) and in vitro gas production (PGIV). Eight sheep cannulated about 1 year of age and 25 kg live weight distributed in a completely randomized design, received 3 treatments and 8 repetitions were used. The treatments were the CMC under 3 periods silage T1: 0, T2 40 and T3: 70 days. The DMS was higher (P <0.05) for T1, both the soluble fraction (A) and insoluble fraction (B) was 404.2 and 403, 8 g / kg DM respectively. The IVDMD was May (605.47 g/kg MS: P= 0.0001) in T1 compared to the other treatments. Regarding the PGV the lower (P = 0.0001) gas production was observed in the T2: 23,22 and T3: 25,85 ml/0.5 g fermentable dry matter, with respect to T1. The PPR, the species Entodiniomorfos decreases in T1 to 24 hours of incubation, being different (P <0.05) than the other treatments. It is concluded that the use of the byproducts of postharvest husk cocoa without silage could be included in ruminant diets because their nutritional properties that can improve rumen function.