Ingeniero Zootecnista

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    INDICADORES PRODUCTIVOS Y DE LA CANAL EN LA CEBA SEMIINTENSIVA DE BOVINOS BAJO DIFERENTES TRATAMIENTOS ANABÓLICOS, VITAMÍNICOS Y MINERALES.
    (INGENIERÍA ZOOTÉCNICA, 2022) CHÁVEZ ZAMBRANO JESSICA SELINA ; FERRÍN SABANDO IVÁN ALEXANDER
    The improvement in the productive yields of cattle has been linked to the application of supplements that seek to improve the assimilation of nutrients. The research was developed with the objective of evaluating indicators of productive response and carcass yield in semiintensively fattened cattle subjected to different anabolic, vitamin and mineral treatments. A completely randomized experimental design was used. A total of 20 mestizo steers with predominance of zebu breeds were used, divided into four treatments, T1 = Boldenona® 50 mg/ml + Nutrimín®, T2= anabolic product Crecefast® zeranol 10.0 mg/ml + Incremax vitamin and mineral supplement ®, T3= Revimin plus and T4= witness or control. An assessment of daily weight gain, dry matter intake, feed conversion efficiency, yield, carcass quality and beneficial cost ratio of each of the treatments was carried out. Statistical analyzes were developed using the statistical program InfoStat with a confidence interval of 95%. The results of the productive parameters showed significant effects (p<0.05) on daily weight gain at 45 days, while no significant differences were found for dry matter intake and conversion efficiency (p>0 .05). Carcass yield and net weight did not show significant differences between each of the treatments with yields of 52.13 to 53.09%. The quality of the carcass showed variability between treatments, finding classification groups of E, C and U. The economic yields were higher in treatments T1 and T4 with a yield of $1.21. It is concluded that the use of anabolics generates satisfactory responses in the productive performance of cattle.
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    EVALUACIÓN DE UNA DIETA BALANCEADA ALTERNATIVA A BASE DE HARINA NACEDERO (Trichanthera Gigantea) Y SU EFICACIA EN LOS PARÁMETROS PRODUCTIVOS DE POLLOS DE ENGORDE
    (INGENIERO ZOOTECNISTA, 2022) RODRIGUEZ TRIVIÑO MARÍA JOSÉ ; VÉLEZ ANZULES PAOLA DEYANIRA
    The incorporation of new food alternatives in diets for feeding broilers has become one of the challenges that have been integrated into this production system. The research was developed with the objective of evaluating the productive performance of broilers fed with the inclusion of different levels of Nacedero (Trichanthera gigantea). A completely randomized statistical design was used with a total of four treatments where 5, 10 and 15% of the flour was replaced by commercial balanced feed and a control treatment (commercial balanced feed). The productive parameters initial weight, weekly weight, weekly weight gain, weekly feed intake, weekly feed conversion and the benefit-cost ratio of each treatment were evaluated. The data was analyzed using the InfoStat program. The results of the final weight reached a better performance in the T0 and T1 treatments with a total of 2497.63 g and 2457.97 g, being statistically different from those obtained in the T2 and T3 treatments. In the same way, statistical differences (p<0.05) were found in the weight gain and feed conversion of the treatments under study, finding a better performance in T0 and T1. The economic profitability presented a decrease when increasing the concentration of the flour, reaching a value of $0.95 in the T3 treatment, well below those documented in the control treatment with a value of $1.12. It is concluded that the inclusion of hatcher meal (Trichanthera gigantea) can be added up to 5% in the feeding of broilers since it negatively influences the productive performance.
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    EVALUACIÓN DE UNA DIETA BALANCEADA ALTERNATIVA A BASE DE HARINA NACEDERO (Trichanthera Gigantea) Y SU EFICACIA EN LOS PARÁMETROS PRODUCTIVOS DE POLLOS DE ENGORDE.
    (INGENIERO ZOOTECNISTA, 2022) RODRIGUEZ TRIVIÑO MARÍA JOSÉ ; VÉLEZ ANZULES PAOLA DEYANIRA
    The incorporation of new food alternatives in diets for feeding broilers has become one of the challenges that have been integrated into this production system. The research was developed with the objective of evaluating the productive performance of broilers fed with the inclusion of different levels of Nacedero (Trichanthera gigantea). A completely randomized statistical design was used with a total of four treatments where 5, 10 and 15% of the flour was replaced by commercial balanced feed and a control treatment (commercial balanced feed). The productive parameters initial weight, weekly weight, weekly weight gain, weekly feed intake, weekly feed conversion and the benefit-cost ratio of each treatment were evaluated. The data was analyzed using the InfoStat program. The results of the final weight reached a better performance in the T0 and T1 treatments with a total of 2497.63 g and 2457.97 g, being statistically different from those obtained in the T2 and T3 treatments. In the same way, statistical differences (p<0.05) were found in the weight gain and feed conversion of the treatments under study, finding a better performance in T0 and T1. The economic profitability presented a decrease when increasing the concentration of the flour, reaching a value of $0.95 in the T3 treatment, well below those documented in the control treatment with a value of $1.12. It is concluded that the inclusion of hatcher meal (Trichanthera gigantea) can be added up to 5% in the feeding of broilers since it negatively influences the productive performance.
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    SUSTITUCIÓN PARCIAL DE LA HARINA DE SOYA POR HARINA DE CHAYA (Cnidoscolus aconitifolius) EN LA ALIMENTACIÓN DE POLLOS PARRILLEROS (COBB 500).
    (INGENIERO ZOOTECNISTA, 2022) CAICEDO MENDOZA JACINTO ENRIQUE ; MENDOZA VERA GLISERIO ANTENOGENES
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    EFECTO DE LA RAZA SOBRE LA PRODUCCIÓN Y CALIDAD ESPERMÁTICA DE VERRACOS (SUS SCROFA DOMESTICUS) EN LA FACULTAD DE CIENCIAS ZOOTÉCNICAS DEL CANTÓN CHONE, ECUADOR.
    (INGENIERO ZOOTECNISTA, 2022) PLUAS VARGAS ERICK FERNANDO ; PULIDO LOOR JORGE HORACIO
    The porcine species is one of the species that reachesthehighestpopulationincreasesdue to the number of offspring perbirthandbirthsperyear;thushavinghighproductivity.The objective was to evaluate the effect of the breed on the production and sperm quality of boars(Susscrofadomesticus)intheFacultyofZootechnicalSciencesoftheChonecanton, Ecuador. To contribute to genetic improvement andprovidelivestocktechnicalknowledge carried out in a sperm evaluation system for stallions used in swine reproduction. A completely randomized experimental design with a factorial treatment arrangement was used: four breeds of breeding pigs (Pietrain, Duroc, Belgian and Landrace)between8and 9 months, average weight 120 kg and two concentrations of semen (pure and diluted). In 500 mL glass containers and with a funnel covered with a sterile gauze filter (separate solid and liquid fraction), theseminalsamplewascollected,immediatelytransferredtothe laboratory and placed in a water bath at 36 ºC. For the macroscopic evaluation of the semen, the volume, color, odor and pH were determined, and in the microscopic agglutination, motility and sperm motility. The microbiological content of the ejaculate was determined by counting thecoloniespresent.Resultsofmacroscopicqualityshoweda higher ejaculate in the Pietrain breed, however in the parameters temperature, color, odor and pH no statistical differences were found. In the microscopic parameters, the Duroc breed showed greater motility and sperm concentration. The bacteriologicalqualityshows the absenceofEscherichiacoliontheejaculateofthepigs.Inconclusion,thebreeddidnot show a greater incidence on the sperm quality of the boars, which allowed guaranteeing semen with high genetic and sanitary value.