Table 3 Duration of the lag-phase and blastocyst development rates for embryos displaying a lag-phase after the second, third or fourth division.

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

Division

n

Lag-phase duration for embryos that reached blastocyst stage (h)

n

Lag-phase duration for arrested embryos (h)

Blastocyst rate (LSM ± SE)

Second (3–4 cells)

2

43.8 ± 7.84

0

N/A

100%

Third (5–8 cells)

82

45.1 ± 1.23a

31

50.6 ± 2.00

72.57 ± 4.20%

Fourth (9–16 cells)

16

58.0 ± 2.87b

5

57.4 ± 4.53

71.43 ± 9.90%

  1. n = number of embryos that displayed lag-phase in each category. Different superscripts (a and b) characterize statistical differences (p < 0.05). Results are stated as least square means ± standard errors.
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