Research Article

Metabolomic Prediction of Pregnancy Viability in Superovulated Cattle Embryos and Recipients with Fourier Transform Infrared Spectroscopy

Table 3

In vitro development and pregnancy rates of Day 6 in vivo embryos that recovered from superovulated, artificially inseminated cows in UNCEIA (France) and UTE-Bos (Spain) followed by a 24 h individual culture step in SOF + 6 g BSA/L prior to embryo transfer.

Development rates
Laboratory Day 60 pregnancyCalving

France27262617 (65%)16 (61%)
Spain24232313 (56%)12 (52%)

Total51494930 (59%)28 (55%)

: early embryos, morulae, flushed and cultured in vitro.
: embryos developed to a transferable stage after a 24 h in vitro culture.
: embryos transferred to recipients (used once for ET).
France: all embryos were transferred in a single herd ( bulls).
Spain: embryos transferred in 2 herds ( bulls).