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 | |