Different protocols using PGF2α as ovulation inducer in Nelore cows subjected to estradiol-progesterone timed AI based protocols.

TL;DR: Two hypotheses were tested: 1) estradiol cypionate (EC) treatment will induce estrus in ovariectomized cows, and 2) cows that exhibit estrus following administration of EC and eCG will have lower P/AI compared to those that do not receive EC.

TL;DR: In conclusion, anestrus and subestrus cows can be well managed with GnRH and PGF2α therapy.

TL;DR: Results suggested that PGE2 might play an important autocrine or paracrine role in the regulation of seasonal changes in the uterine functions of the wild Daurian ground squirrels during the breeding and non-breeding seasons.

TL;DR: The results have shown that 90% of the cows have a pelvic uterine position for the treated group against 60% in the group untreated, and gonadotropin treatment has a positive impact on the reduction of the interval calving-estrus by 66 days compared to the control group.

TL;DR: The addition of an eCG treatment at the time of device removal, which increased plasma progesterone concentrations and pregnancy rates in anestrous postpartum suckled B. indicus cows, may be useful to improve reproductive performance of beef cattle in tropical climates.

TL;DR: Improved therapeutic uses for prostaglandins will be developed when the authors understand better their involvement in implantation, maintenance of luteal function, and establishment and maintenance of pregnancy.

TL;DR: Estradiol cypionate effectively replaced estradiol benzoate or gonadotropin-releasing hormone as the ovulatory stimulus, reducing labor and cost.

TL;DR: Improving estrous responses between progesterone device withdrawal and FTAI and increasing the diameter of the LF at FTAI may be important aspects to achieve improved estrous synchronization responses and P/AI.