Influencia sobre o índice de gestação em receptoras de embriões produzidos in vivo

Abstract

Studied the influence of three factors on the pregnancy rate of recipients transferred with embryos produced in vivo. Were evaluated 379 embryo transfers at fixed time, from February to May 2014 (dry season) and from October to December 2014 (rainy season), exposed in receiving the hormonal protocol with reuse of vaginal devices. Then evaluated the reuse of vaginal progesterone-releasing device, the time of year that occurred the transfer of embryos and bull semen used in artificial insemination in fixed time per donor. It is noteworthy that these beneficiaries were selected through careful gynecological examination. Data were analyzed by chi-square test. Pregnancy rates are different (P <0.05) when reused intravaginal device, obtaining values equal to 10.8%, 16.9% and 36.1% for the first, second and third usage respectively. For other factors there was no significant effect (P> 0.05). The performance of gynecological morphological evaluation order of classification of the findings of the genital tract of recipient cows for inclusion in FTET programs combined with a good body condition can be positively affected total content of persons subject to pregnancy.