Ciencias Agropecuarias
URI permanente para esta comunidadhttp://repositorio.uta.edu.ec/handle/123456789/870
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Item type:Ítem, Evaluación del heno de cebada y alfalfa sobre los índices productivos en las etapas de crecimiento y engorde de cuyes(2025-02) ;Lema Inga Maria FernandaRosero Peñaherrera Marco AntonioThe feeding of Cavia porcellus is significant in the development of these animals, it is subject to the quality and contribution of nutrients, for this reason the objective was to evaluate the barley and alfalfa hay on the productive indices in the growth and fattening stages of guinea pigs, it was developed under a DBCA, with 4 treatments T1 3 % barley and alfalfa hay, T2 5 % barley and alfalfa hay, T3 7 % barley and alfalfa hay and T0 control with only green forage; in 3 repetitions, that is, 12 experimental analysis units with 5 animals each, total of 60 animals, it was compared using the Tukey test at 5% in Infostat, with the response variables initial weight in (g), final weight in (g), weight gain in (g), feed consumption, feed conversion, carcass weight in (g), carcass yield in %, mortality rate, cost / benefit ratio. The results for the chemical analysis the percentage of NDF the alfalfa hay in T2R2 with 56.79% and the T2R1 with 55.71%; for the FAD the alfalfa hay in T2R2 with 41.08% and T2R1 with 39.71%; the initial weight of the guinea pigs were T1 = 288.58 g; the T2 = 280.15 g; the T3 = 315.22 g and the T0 = 265.01 g; giving an average of 300 g; final weight in (g) for the T1 treatment with 676.38 g; the weight increase in (g) the T1 treatment with 387.80 g; the feed consumption the T1 treatment with 1848.57 g; the feed conversion the T1 treatment with 4.84 g; Regarding carcass weight, the highest value was found in treatment T1 with 422,75 g; carcass yield was highest in treatment T0 with 80.99%. It was concluded that the best treatment for the response variables was T1, which indicated the highest productive indices; in the cost-benefit ratio, it was found that T1 and T2 reported the highest benefits with 1.27 and 1.20 respectively.Item type:Ítem, Efecto de la aplicación de gnrh sintética sobre la calidad seminal y caracteristicas reproductivas de carneros alimentados con alfalfa contaminada con Pseudopeziza medicaginis(2020-01-06) ;Bustos Cazar, Bryan SebastianAragadvay Yungán, GonzaloThis work was carried in Technical University of Ambato where nine (3 for each treatment) adult rams mest with a live weight of approximately 40kg and 2 years old were used; the animals went through a process of adaptation and training with a duration of 20 days for it: This objective of this research was to evaluate the effect of the application of synthetic GnRH (buserelin acetate) on the seminal quality and reproductive characteristics of rams fed with alfalfa contaminated to 70% of Pseudopeziza medicaginis. The project was carried out in a completely randomized design. The frequency of GnRH administration and seminal extraction (T0: Control, T1: Alternate, T2: Continuous) by artificial vaginas for the evaluation of: volume, mortality, concentration, morphology: loose head of sperm (MCS), small tail (CP), beheaded (DC), crooked tail (CT), bent tail (DAG defect) (CDD), tail rolled up (CE), mass mobility, individual mobility on the other hand was also evaluated: scrotal circumference (EC), testicular volume (VT) and copulatory capacity (Ex. Female, N° jumps, ejaculate, time) of which the following results were obtained: with respect to sperm morphology referring to a loose head of sperm (indicator 4), it showed a significant difference (P=0,0048) between treatments finding lower percentages of loose heads of sperm in animals that were administered a dose (12μg) of half-hour buserelin acetate before extraction for 7 days in a row (T2); as soon as regarding mass and individual mobility, differences were observed (P=<0,0001), with greater mobility in T1 (4) compared to T0 and T2. It is concluded that the administration of buserelin acetate at a dose of 12μg /ram IM acted efficiently decreasing the index of loose heads when administrated 30 minutes before seminal extraction for 7 continuous days (T2) and as a consequence in both mass and individual mobility. What is feasible in rams fed alfalfa (Medicago sativa) contaminated with 70% of the fungus Pseudopeziza medicaginisItem type:Ítem, Efecto de los bioles utilizando tres fuentes de nitrógeno en el desarrollo del cultivo de amaranto (Amaranthus quitensis H.B.K.) Y (Amaranthus hypochondriacus L.)(2017) ;Zuñiga Moreno, Mariana ElizabethAldas Jarrín, Juan CarlosThe present research was carried out to evaluate the effect of bioles on the development of amaranthus (Amaranthus quitensis H.B.K.) and (Amaranthus hypochondriacus L.) in agroecological conditions at the Querochaca Experimental Teaching Farm. The Complete Blocks Design (DBCA) was applied with 6 treatments plus 2 controls x 4 replicates. We performed the analysis of variance, Tukey significance tests at 5% to differentiate the treatments, and tests of Minimum Difference Significant at 5% for factor variables. In the plant height variable, the best treatment was V1N2 (Amaranthus quitensis + biol with alfalfa nitrogen source), with averages of 47,92 cm at the beginning of flowering and 108.8 cm at harvest, because the biol treatment provided the necessary nutrients and phytoregulators for the better development of the crop. The diameter of the stem was determined at the beginning of flowering and harvesting, observing that the V1N3 treatment (Amaranthus quitensis + biol with nitrogen source of vicia) had the best averages with values of 15,65 and 19, 38 mm respectively, these results were probably obtained because the leguminous bioles have a good nitrogen content that positively influences the growth of the plants. When analyze the variable number of panicles, it is evidence that the treatment V1N3 (Amaranthus quitensis + biol with source of nitrogen of vicia) presented the largest number of panicles with an average of 6,525. The application of biol with legumes had a direct influence on this variable because they provide nutrients and phytoregulators necessary for a better vegetative development of the crop. After analyzing the yield variable, it concluded that the treatment V1N2 (Amaranthus quitensis + biol with alfalfa nitrogen source) had the best average yielding a value of 314.19 grams. This variable was influenced by the application of biol with alfalfa nitrogen source due to the fact that this provides the elements such as nitrogen, phytoregulators, necessary in the development of the plant which contributes to improved production.Item type:Ítem, Efecto de la alfalfa contaminada con Pseudopeziza medicaginis sobre la calidad del semen de carneros criollos(2016) ;Novillo Rueda, María RubíAragadvay Yungán, GonzaloThis work was done on the farm of the Técnica de Ambato University. Grazing meadows formed mostly by alfalfa is used in the Ecuadorian highlands in feeding sheep, however this forage has high severity Pseudopezisa medicaginis related turn with high levels of phytoestrogens (coumestrol). The aim of this research was to assess the effects on semen quality, the coumestrol present in contaminated alfalfa with different levels of Pseudopezisa medicaginis included in diets for sheep. They were tested in a isoproteic and isoenergetic diet, three different levels of fungal contamination, evaluated the following treatments: T1 10%, T2: 40%, T3: 70% contamination in alfalfa. The experiment was carried out under a design of a randomized complete block. By artificial vagina weekly semen collections were performed for evaluation of volume (VOL), motility (MOT), mortality (MOR), concentration (CONC), morphology (MRF), gross motility (SLMM), and individual mobility (MIDL) . The MOR VOL and showed no difference (P = 0.4856 and P = 0.5952 respectively) between treatments. CONC sperm (P = 0.0117) showed no difference, with a higher concentration T1 (Sp 4.63 x 109) with respect to T2 and T3. With regard to the MRF sperm it showed difference (P = 0.0016) between treatments found lower percentages of morphological changes in animals that were fed contaminated alfalfa with 10% Pseudopeziza medicaginis (T1). As for MMSL differences (P = 0.0001) it was observed between treatments, with the greatest mobility T1 (4.43). The higher (P = 0.0007) MIDL is observed for the T1 and T2 T3 off. It is concluded that ingestion of alfalfa with 70% contamination with Pseudopeziza medicaginis measurements have harmful effects on sperm morphology especially alterations in the queue and as low result in both individual sperm motility as masal, which could become these results detrimental effects on reproductive perfomance.Item type:Ítem, Densidad de siembra e inoculación de rhizobium (rhizobium meliloti) en semillas de alfalfa (medicago sativa, l.) en semilleros(2012-09-27) ;Palate Criollo, Franklin RobertoGutiérrez Albán, AlbertoEl proyecto se realizó en el barrio Simón Bolívar, parroquia Picaihua, cantón Ambato, provincia de Tungurahua. El terreno se encuentra a una altitud de 2.650 msnm y en las siguientes coordenadas geográficas: 1º16’27.31’’Latitud Sur, y 78º34’32.42’’ Longitud Oeste. Con el propósito de determinar la densidad de siembra (S1 1,5g/m2, S2 2,0g/m2, S3 2,5g/m2) e inoculación de rhizobium (Rhizobium meliloti) (D1 0,083g, D2 0,11g, D3 0,14g) en semillas de alfalfa (Medicago sativa, L.) variedad morada nacional en semilleros, con la finalidad de obtener plántulas de mejor calidad. Se utilizó el diseño de bloques completos al azar en arreglo factorial 3x3+3, con cuatro repeticiones. Se efectuó el análisis de varianza ADEVA, pruebas de Tukey al 5% para determinar el mejor tratamiento y el análisis grupal para establecer la dosis de inoculante adecuada para cada una de las densidades de semilla. Los objetivos del presente trabajo fueron: - Determinar la densidad de semilla por metro cuadrado de semillero, para la producción de plántulas de alfalfa (Medicago sativa, L.). - Definir la dosis de inoculante adecuada (Rhizobium meliloti) en las semillas de alfalfa (Medicago sativa, L.) para la producción de plántulas. Del análisis de los datos obtenidos se concluyó que: - La densidad con 0,15 gramos de semilla por metro cuadrado de semillero fue la adecuada para la producción de plántulas de alfalfa (Medicago sativa, L.). - La dosis 0,14 gramos de inoculante (Rhizobium meliloti) fue la adecuada en las semillas de alfalfa (Medicago sativa, L.) para la producción de plántulas. - En la variable largo de raíz, el mejor tratamiento fue S1D3 (1,5g/m2 y 0,14g de inoculante) con un valor medio de 0,36 metros. El mejor tratamiento para la variable diámetro de raíz fue S1D3 (1,5g/m2 y 0,14g de inoculante) con un valor medio de 0,68 centímetros. - El tratamiento S1D3 (1,5g/m2 y 0,14g de inoculante) para la variable largo de tallo, mostró el mejor resultado con una media de 0,58 metros. - En la variable diámetro de tallo, el mejor tratamiento fue S1D3 (1,5g/m2 y 0,14g de inoculante) con un valor medio de 0,41 centímetros. - El mejor tratamiento para la variable número de macollos fue S1D2 (1.5g/m2 y 0,11g de inoculante) con un valor medo de 3,15 macollos. - En la variable área foliar, el mejor tratamiento fue S1D3 (1,5g/m2 y 0,14g de inoculante) con un valor medio de 4,77 centímetros cuadrados.Item type:Ítem, Aplicación de Biol en el cultivo establecido de Alfalfa (Medicago sativa)(2012) ;Guanopatín Chicaiza, Mélida RebecaBeltrán, OctavioEl presente trabajo de investigación “APLICACIÓN DE BIOL EN EL CULTIVO ESTABLECIDO DE ALFALFA” (Medicago sativa), se llevó a efecto en la propiedad del señor Jorge Guanopatín que está ubicada en el barrio San Pedro cantón Salcedo, provincia de Cotopaxi. Se encuentra a una altitud de 2628m.s.n.m. al norte del cantón Salcedo, cuyas coordenadas geográficas son 01º 00 25” latitud Sur y 78º34 39” de longitud Oeste, con el objeto de determinar la dosis de los bioles de bovino y gallinaza; D1= 5cc , D2= 10cc y época de aplicación E1= 10 días E2= 15 días, adecuados y su efecto en el rendimiento en el cultivo de alfalfa (Medicago sativa). Se contó con un testigo que me permitió confrontar con los tratamientos que se evaluaron a partir de productos dosis y épocas de aplicación. Se utilizó el diseño de bloques completamente al azar DBCA, con arreglo factorial 2*2*2 + 1, con 3 repeticiones y 9 tratamientos. Los resultados obtenidos durante todo el proceso de la investigación, se lo analizó mediante el análisis de varianza (ADEVA), de acuerdo al diseño experimental planteado, además de pruebas de significación de Tukey al 5% para diferenciar entre tratamientos e interacciones. Los análisis estadísticos registraron como el mejor tratamiento dispuesto a la interacción P1D1E2 (biol de bovino – 5cc/l – 15 días después del corte), reportó excelentes resultados, ya que se obtuvo una gran altura de planta de 96,32cm, en todas las parcelas que se aplicó este tratamiento, un número de brotes con un promedio de 18,53 y mayor número de hojas por rama y un incremento en el rendimiento, en el cultivo de alfalfa (Medicago sativa), y lo mas importante para el agricultor es que es de fácil preparación y permite aprovechar el estiércol de los animales ya que los bioles son una alternativa de fertilización foliar.
