number of fertilized oocytes, n
|
fertilization rate, n
(%)
|
early-cleaved embryos (30 hpi), n
(%)
|
late-cleaved embryos
(48 hpi), n
(%)
|
morula formation rate, n
(%)
|
morulas from early-cleaved embryos at Day 5, n (%)
|
morulas from late-cleaved embryos at Day 5, n (%)
|
---|
1242
|
794
|
336
|
458
|
420
|
166
|
254
|
|
(63)
|
(27)a
|
(36)b
|
(52,9)
|
(58)
|
(62,5)
|
- Proportion of embryos cleaved at 30 and 48 h post insemination (hpi) and formation of morulas at Day 5 of in vitro culture depending on the time of the first cleavage. Percent of early- and late-cleaved embryos was presented according to the number of fertilized oocytes. Morula formation rate was calculated according to the total number of cleaved embryos. Percent of early- and late- cleaved morulas was presented in relation to the total number of embryos cleaved at 30 and 48 hpi, respectively
- a,b Differences between cleavage rates (P < 0.0001)
- P values of cleavage rate determined by Chi-square test with Yates’ correction