Use of Bayesian Inference to Correlate In Vitro Embryo Production and In Vivo Fertility in Zebu Bulls

Table 1

Fertility performance of each bull expressed as conception rate after fixed-time artificial insemination (FTAI). Pronuclei visualization, cleavage rates, and blastocyst formation rates (means ± SD) observed at 12, 72, and 168 hours after in vitro fertilization, respectively.

Bull	Inseminated cows	Conception rate after FTAI (%)*	Total oocytes	Analyzed zygotes	Pronuclei (%)	Cleavage** (%)	Blastocyst** (%)
V	149	54.4	344	40	52.5±1.7	77.9±1.0^b	27.9±0.5
T	109	54.1	341	40	40.0±1.6	57.4±0.4^a	22.8±0.4
G	234	63.3	312	30	40.0±1.8	78.1±1.8^b	30.5±0.5

a,bValues with different superscripts in the same column are significantly different (𝑃<.05).
*Percentage calculated based on the number of pregnant cows in relation to the total number of inseminated cows.
**Percentage calculated based on the total number of oocytes minus the zygotes removed for pronuclei evaluation.