Table 1 Comparison of the time to reach each division between zygotes that reached the blastocyst stage and arrested embryos.

From: Embryo morphokinetics derived from fresh and vitrified bovine oocytes predict blastocyst development and nuclear abnormalities

Division

Blastocyst

Arrested embryos

n

Time (h)

n

Time (h)

First (1–2 cells)

102

31.3 ± 0.56a

156

35.3 ± 0.38b

Second (3–4 cells)

102

39.0 ± 0.72

120

40.3 ± 0.56

Third (5–8 cells)

102

48.5 ± 0.99

88

49.7 ± 0.85

Fourth (9–16 cells)

102

87.7 ± 1.98

39

83.5 ± 2.53

Fifth (> 16 cells)

102

119.1 ± 1.27

18

124.0 ± 2.74

Blastocyst stage

102

166.6 ± 14.5

0

N/A

  1. n = number of zygotes/embryos analyzed. Different superscripts (a and b) per row represent statistical differences (p < 0.05). Results are stated as least square means ± standard errors. N/A = not applicable.
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