Ciencias Agropecuarias

URI permanente para esta comunidadhttp://repositorio.uta.edu.ec/handle/123456789/870

Examinar

Filtros

20202

Ajustes

Tema: search.filters.subject.CARNEROS

Resultados de la búsqueda

Mostrando 1 - 2 de 2
  • Miniatura
    Item type:Ítem,
    Efecto de la GnRH sintética sobre la calidad del semen criopreservado diluido con dos productos comerciales, de carneros criollos alimentados con Medicago sativa contaminada
    (2020-09)
    Arias Vallejos, Ana Fernanda
    ;
    Aragadvay Yungán, Gonzalo
    The purpose of the present investigation was to evaluate the effect of synthetic GnRH on the quality of cryopreserved semen in 0.5 ml straws, diluted with commercial products, raw meat fed with 70% of Medicago sativa contaminated with Pseudopezisa medicaginis. The treatments are distributed according to the following: G0D1: only semen diluted with Triladyl obtained from types that do not receive GnRH; G0D2: Semen diluted with Andromed from sheep that did not receive GnRH; G1D1: twodose GnRH-treated cartridges diluted with Triladyl; G1D2: semen from animals treated with GnRH at two doses diluted with Andromed; G2D1: Semen from animals treated with GnRH in alternative doses diluted with Triladyl; G2D2: Semen from animals treated with GnRH in alternative doses diluted with Andromed. It works with 36 experimental units with different commercial diluents. Starting to evaluate 108 sheep straws in total. The work will be carried out through a completely random design in a 3 * 2 factorial arrangement with 6 repetitions. Statistical analyzes were carried out using a variance analysis and a comparison of the average treatment with a 5% Tukey test using the statistical program. The following variables were analyzed: mass motility (MMSL), individual progressive motility (MIP), osmotic resistance (HOST), sperm morphology (MRF), sperm concentration (CONC) and acrosome integrity. The variables that showed differences between treatments: massive motility (MMSL), progressive individual motility (MIP), acrosomatic integrity and osmotic resistance (HOST). The general conclusion is that GnRH positively influences the semen quality of sheep after defrosting
  • Miniatura
    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 Sebastian
    ;
    Aragadvay Yungán, Gonzalo
    This 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 medicaginis