Unidad Posgrado Facultad Ingeniería Agronómica

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Subject: search.filters.subject.OVINOS

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    Bienestar animal y calidad de carne antes y después del faenamiento en ovinos del Camal Municipal de Ambato
    (2024-11) Soria Rojas Mónica Abigail; Vargas Burgos Julio Cesar
    The titled study addresses the relevance of animal welfare and the quality of sheep meat in the context of the Camal Municipal de Ambato, Ecuador. The growing demand for sheep meat and consumer expectations in terms of quality and animal welfare pose significant challenges for the livestock industry in the region. Evaluate animal welfare and sheep meat quality before and after slaughter to identify areas for improvement in handling and transportation practices. An observational and descriptive study was carried out, using a simple random sampling of sheep slaughtered in one month. Parameters such as body condition, live weight, carcass yield. The data were analyzed with SPSS software, applying Student t' tests and analysis of variance. The results indicate that sheep transported from greater distances and in unsuitable vehicles have higher levels of stress, reflected in a greater incidence of DFD (dark, firm and dry) meat. Furthermore, proper management practices, such as the use of effective stunning methods, positively influence meat quality and animal welfare. The study highlights the importance of implementing humane transportation and handling practices to improve animal welfare and the quality of sheep meat in the Ambato Municipal Camal. These improvements not only benefit producers and consumers, but also contribute to the sustainability and competitiveness of sheep production in the region.
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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.
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    Efecto de la ingestión de Chenopodium quinoa sobre el rendimiento productivo en ovinos y producción de gas in vitro
    (2016) Cadena Yanchapaxi, Diego Rolando; Barros Rodríguez, Marcos Antonio
    The aim of this research was to evaluate the effect of the ingestion of Chenopodium quinoa on the production performance in sheep and gas production in vitro. Eighteen sheep were used with an average weight of 21.34±2.03 kg. it is evaluated: 100% Kikuyo, kikuyo 80% + stover quinoa 20%, kikuyo60% + stover quinoa 40%. It was determined: voluntary intake, weight gain, feed conversion, in situ rumen degradability and digestibility MS and in vitro gas production. The results show differences in weight gain (P = 0.0001), showing higher gain the T2 (93.83g). The voluntary intake per Kg PV0.75 showed no significant difference (P= 0.1385) between treatments. Feed conversion was lower (P = 0.0178) in the T2 versus T1 (7: 1 to 9: 1 respectively). The apparent digestibility of DM did not differ (P = 0.2689) between treatments. The in vitro gas production (ml / 0.5 g fermentable MS) was 39 ml lower (P = 0.0215) in T2 with respect to T1. The ruminal degradation of DM for the soluble fraction A shows differences (P <0.05) between treatments, the largest percentage for T2, the fraction B showed differences for T1. It can be concluded that the stubble of quinoa can be included in the diet of sheep up to 20% improved productivity of the sheep.
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    Preferencia del consumo de forrajes arbóreos y arbustivos andinos en ovinos
    (2016) Ortiz Tirado Paúl Santiago, Paúl Santiago; Barros Rodríguez, Marcos Antonio
    El objetivo de esta investigación fue determinar la preferencia de consumo de árboles y arbustos forrajeros, utilizando ocho ovinos machos de alrededor de 30 kg. Donde se evaluó: Baccharis latifolia, Malva sylvestris, Cytisus monspessulanus, Tecoma stans, Anethum graveolens, Alnus acuminata, y Sambucus nigra. Se determinó: preferencia de consumo voluntario, mediante una prueba de cafetería. Degradación ruminal in situ MS, mediante la técnica de la bolsa de nylon en el rumen. Digestibilidad y producción de gas in vitro. Los resultados del screening fitoquímico muestran que T5 presenta una moderada concentración de saponinas. En taninos totales T6 presenta una concentración. Para alcaloides totales y polifenoles totales T3, T4, T6 muestran presencia cuantiosa respectivamente. Aceites esenciales se observa que T5 y T7 tienen una alta concentración. La preferencia de consumo mostró diferencias (P=0.0001) entre tratamientos siendo el mayor consumo para T6 (117 gMS/animal/día). La mayor digestibilidad y menor producción de gas se observó en T2 y T1 (71.1% y 203.88 ml de gas/0.5g MS fermentable respectivamente). La degradación ruminal de la MS los mayores porcentajes (P=0.0001) para la fracción soluble A fue para T1 y T4, la fracción B mostró para T2, T5 y T7. Se puede concluir que los forrajes de árboles (T6 y T4) como de arbustos (T2) se puede incluir en la dieta de los ovinos mejorando funciones del rumen y disminuir emisiones de GEIs.