Browsing by Author "Tirado Vaca, Mercy Mariela"

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    Efecto del acetato de medroxiprogesterona y benzoato de estradiol, sobre la emergencia folicular en cabras con baja condición corporal
    (2019-03) Tirado Vaca, Mercy Mariela; Aragadvay, Gonzalo
    The present study was conducted in goats of body condition 2 (CC 2) in the faculty of Agricultural Sciences of the Technical University of Ambato, a total of 12 goats were previously evaluated by trans-rectal ultrasonography and were randomly distributed in 4 groups (T1, T2, T3, T4); in which the effect of medroxyprogesterone acetate (AMP) sponge intra-vaginal, at different time of withdrawal with and without application of estradiol benzoate (BE) on the follicular dynamics was evaluated, emergence of the follicular wave, expressiveness of the heat and percentage of gestation. The treatments were applied to day 0 all the females received an intra-vaginal sponge (60 mg of AMP) during 11 days for two groups (T1, T2), and 14 days for the remaining two groups (T3, T4). The T1 and T3 treatments received 1mg of BE (IM) on the same day of the intra-vaginal sponge application and one day after the extraction of the same, a second dose of BE (0.5mg) was applied to induce the ovulation. The ovarian response was monitored daily by trans-rectal ultrasound from day 0 to day 14 (T1 and T2) and 17 (T3 and T4) days given mount directly, subsequently, the plasma concentration of 17β- estradiol was measured on the final day of treatment and correlated with follicular size, vaginal cytology was performed to confirm the presence of estrus and 35 days after direct mounting, ultrasound was performed to check for pregnancy. A 2x2 factorial design (day of intra-vaginal sponge removal and BE application) was used and the variables were analyzed by means of an ANOVA. In conclusion, treatment with AMP combined with BE, does not improve follicular size, however there is a low conception for these treatments (T1, T3), while the use of AMP without combining with BE has a better conception, so in goats fertility is not affected in relation to low body condition.