Table 1 Boar age, ejaculate characteristics and sperm functional parameters in liquid-stored semen (n = 36) for each of the two groups of SP-samples grouped hierarchically (P < 0.001) according to OXT concentration
From: Oxytocin in pig seminal plasma is positively related with in vivo fertility of inseminated sows
| Parameter | Evaluation time-point | Median (25th, 75th Percentiles) | P-value | |
|---|---|---|---|---|
|
Low SP-OXT (2.91 to 24.33 ng/mL, n = 19) |
High SP-OXT (27.79 to 61.04 ng/mL, n = 17) | |||
|
Boar age, months | – |
26 (20, 33) |
16 (12.5, 24.5) | 0.042 |
| Ejaculate volume, mL | 0 h |
608 (524, 645) |
655 (598.5, 693.5) | 0.019 |
|
Sperm concentration, ×106 sperm/mL | 0 h |
161.4 (140.9, 225.3) |
160.5 (139.3, 211.7) | 0.679 |
|
Total sperm count, ×106 sperm | 0 h |
99,902 (75,791, 138,077) |
110,773 (82,420, 120,351) | 0.825 |
|
Normal sperm morphology, % | 0 h |
76 (73, 90) |
79 (73, 89) | 0.906 |
| Motile sperm, % | 0 h |
82 (75, 86) |
81 (70.5, 85.5) | 0.556 |
| 72 h |
76 (72, 78) |
71 (64.5, 80) | 0.409 | |
| Progressive motile sperm, % | 0 h |
52 (46, 64) |
48 (39, 53.5) | 0.056 |
| 72 h |
52 (40, 65) |
58 (44.5, 62) | 0.577 | |
| Viable sperm, % | 0 h |
88.4 (79.1, 90.1) |
88.2 (83.8, 90.05) | 0.956 |
| 72 h |
86.8 (81.7, 90.9) |
86.9 (82.8, 90) | 0.943 | |
| Viable sperm generating intracellular ROS, % | 0 h |
31.7 (23.4, 41.1) |
21.5 (9.65, 42.8) | 0.214 |
| 72 h |
48.3 (34.5, 62.3) |
54.7 (37.95, 66.35) | 0.614 | |
| Viable sperm with high plasma membrane fluidity, % | 0 h |
1.3 (0.8, 1.7) |
1.4 (0.95, 2.2) | 0.204 |
| 72 h |
1 (0.5, 5.2) |
2.4 (1.05, 7.8) | 0.198 | |