As elective transfer of a single embryo (eSET) becomes increasingly accepted, the need to
improve implantation rates becomes crucial. Selecting the most competent embryo therefore …

Contents In general, the majority of immature bovine oocytes fail to develop to the blastocyst
stage following maturation, fertilization and culture in vitro. The evidence suggests that while …

Mammals usually produce approximately equal numbers of sons and daughters, but there
are exceptions to this general rule, as has been observed in ruminant ungulate species …

Exposure of the embryo or fetus to perturbations in utero can result in intrauterine growth
restriction, a primary risk factor for the development of adult disease. However, despite …

Full-term development has now been achieved in several mammalian species by transfer of
somatic nuclei into enucleated oocytes [1, 2]. Although a high proportion of such …

OBJECTIVE: To evaluate, using time-lapse monitoring, the temporal influence of culture in
5% O2 or 20% O2 on human embryonic development. DESIGN: Retrospective cohort study …

IFN-τ is a secretory product of trophectoderm of cattle, sheep, and their relatives and is
expressed for a few days in early pregnancy after the blastocyst first forms. It serves to alert …

Purpose Time-lapse monitoring allows for a flexible embryo evaluation and potentially
provides new dynamic markers of embryo competence. Before introducing time-lapse …

As with most cells, bovine pre-elongation embryos are highly dependent on oxidative
phosphorylation as the primary energy production pathway (that is, ATP generating …

In brief The first week of gestation is a period of major pregnancy loss in cattle, this study
reveals that the male plays a key role in regulating embryonic development during this time …