Table 1.
In Vivo Oocyte Aging | ||||||||||||||
HPO | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 28 | ||||||
Eyeing % | 88 ± 9 a | 91 ± 5 a | 77 ± 16 ab | 66 ± 30 ab | 46 ± 25 bc | 15 ± 11 cd | 3 ± 4 d | 0 ± 0 d | ||||||
Hatching % | 83 ± 16 a | 88 ± 10 a | 71 ± 21 a | 59 ± 31 ab | 31 ± 19 bc | 6 ± 5 c | 0.7 ± 1 c | 0 ± 0 c | ||||||
In Vitro Oocyte Aging | ||||||||||||||
HPO | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 28 | ||||||
Eyeing % | 95 ± 4 a | 94 ± 3 a | 92 ± 3 a | 84 ± 8 a | 62 ± 6 b | 40 ± 5 c | 0 ± 0 d | |||||||
Hatching % | 94 ± 4 a | 92 ± 1 a | 88 ± 5 a | 68 ± 15 ab | 36 ± 22 bc | 21 ± 9 cd | 0 ± 0 d |
HPO: Hours post-ovulation; HPS: Hours post-stripping.