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Table 1 Sperm quality parameters in pre-frozen (P-F) and frozen–thawed (F-T) sperm, 30 (F-T-30 min) and 240 (F-T-240 min) min after thawing (mean ± SEM)

From: GSTM3, but not IZUMO1, is a cryotolerance marker of boar sperm

Parameter

Classification

P-F

F-T-30 min

F-T-240 min

% Total motile spermatozoa

GFE

72.52 ± 4.49a,1

30.10 ± 1.91a,2

8.14 ± 1.29a,3

PFE

71.45 ± 6.53a,1

4.45 ± 1.47b,2

1.97 ± 0.34b,2

% Progressive motile spermatozoa

GFE

54.25 ± 2.60a,1

21.04 ± 1.77a,2

5.02 ± 1.48a,3

PFE

50.09 ± 5.01a,1

1.83 ± 0.99b,2

0.28 ± 0.09b,2

% SYBR-14+ /PI− spermatozoa

GFE

81.20 ± 1.65a,1

28.77 ± 2.85a,2

21.56 ± 3.46a,3

PFE

79.84 ± 3.42a,1

5.60 ± 1.56b,2

3.79 ± 1.01b,2

% M540−/YO-PRO-1− spermatozoa

GFE

75.13 ± 3.23a,1

24.36 ± 2.33a,2

14.59 ± 2.49a,3

PFE

73.32 ± 3.58a,1

6.26 ± 1.51b,2

2.72 ± 0.72b,2

% JC1agg spermatozoa

GFE

79.14 ± 3.04a,1

34.29 ± 2.36a,2

27.57 ± 5.51a,2

PFE

77.50 ± 3.28a,1

16.50 ± 3.28b,2

12.75 ± 5.88a,2

% E−/YO-PRO-1− spermatozoa

GFE

80.01 ± 2.23a,1

21.92 ± 2.26a,2

14.09 ± 3.15a,3

PFE

76.10 ± 2.79a,1

8.86 ± 1.10b,2

3.39 ± 1.82b,2

  1. Each ejaculate was classified as having good (GFE) or poor freezability (PFE). Different superscript numbers (1,2,3) indicate significant differences (P < 0.05) between conditions (pre-frozen (P-F), F-T-30 min and F-T-240 min). Different superscript letters (a,b) indicate significant differences(P < 0.05) between GFE and PFE in a given parameter