Structure of preantral follicles, oxidative status and developmental competence of in vitro matured oocytes after ovary storage at 4 °C in the domestic cat model

Table 1 In vitro maturation of cat oocytes retrieved from ovaries stored for different times at 4 °C

Nuclear configuration after IVM
Storage time (h)	n° oocytes	GV (%)	GVBD/MI (%)	MII (%)	Deg (%)
0	109	25 (22.9%)^a	14 (12.8%)	67 (61.5%)^a	3 (2.8%)^a
24	114	24 (21.1%)^a	8 (7.0%)	70 (61.4%)^a	12 (10.5%)^b
48	83	11 (13.2%)^a	4 (4.8%)	58 (69.9%)^a	10 (12.1%)^b
72	58	16 (27.6%)^a	2 (3.5%)	19 (32.7%)^b	21 (36.2%)^c
96	62	28 (45.2%)^b	4 (6.5%)	11 (17.7%)^b	19 (30.6%)^c

GV germinal vesicle, GVBD germinal vesicle breakdown, MI metaphase I, MII metaphase II, Deg degenerated
Different superscripts (a, b, c) P < 0.05

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