Table 1.
Descriptive statistics, genomic heritability (h2) and number of significant SNPs in the GWAS for sperm quality parameters (N = 300)
| Trait | Acronym | Mean (SD) | h2 (SE) | Number of SNPs in autosomal chromosomes | Number of SNPs in unplaced scaffolds |
|---|---|---|---|---|---|
| Concentration (sperm/mL) | CON | 141.3 (65.5) | 0.13 (0.11) | 0 | 0 |
| Viability 5 min | VIAB_5 | 90.1 (6.3) | 1 × 10–6 (0.11) | 0 | 0 |
| Viability 90 min | VIAB_90 | 77.4 (17.3) | 0.14 (0.13) | 0 | 0 |
| Osmotic resistance test | ORT | 79.8 (12.5) | 0.13 (0.12) | 0 | 0 |
| Head abnormalities | HABN | 2.1 (5.9) | 0.16 (0.11) | 41 | 0 |
| Neck abnormalities | NABN | 3.0 (4.9) | 1 × 10–6 (0.13) | 18 | 0 |
| Tail abnormalities | TABN | 2.7 (3.4) | 0.09 (0.12) | 0 | 0 |
| Proximal droplets | PDROP | 3.5 (5.1) | 0.12 (0.15) | 1 | 0 |
| Distal droplets | DDROP | 4.5 (4.5) | 0.06 (0.11) | 0 | 0 |
| Motility 5 min | MT_5 | 75.4 (18.1) | 0.21 (0.15) | 3 | 217 |
| Motility 90 min | MT_90 | 64.1 (22.0) | 0.39 (0.14) | 2 | 252 |
| Average path velocity 5 min (µm/seg) | VAP_5 | 34.0 (10.2) | 0.17 (0.11) | 0 | 0 |
| Average path velocity 90 min (µm/seg) | VAP_90 | 30.8 (9.5) | 0.35 (0.13) | 0 | 0 |
| Curvilinear velocity 5 min (µm/seg) | VCL_5 | 46.2 (12.5) | 0.11 (0.10) | 0 | 0 |
| Curvilinear velocity 90 min (µm/seg) | VCL_90 | 39.7 (10.2) | 0.35 (0.13) | 0 | 0 |
| Straight line velocity 5 min (µm/seg) | VSL_5 | 27.0 (8.3) | 0.23 (0.13) | 0 | 38 |
| Straight line Velocity 90 min (µm/seg) | VSL_90 | 25.9 (8.3) | 0.34 (0.13) | 0 | 0 |
| Abnormal acrosomes 5 min | ACRO_5 | 7.0 (5.6) | 0.08 (0.11) | 4 | 0 |
| Abnormal acrosomes 90 min | ACRO_90 | 16.4 (12.6) | 0.06 (0.10) | 0 | 0 |
| Ratio motility | R_MT | 0.9 (0.2) | 1 × 10–6 (0.11) | 0 | 0 |
| Ratio average path velocity | R_VAP | 0.9 (0.3) | 1 × 10–6 (0.08) | 0 | 0 |
| Ratio Curvilinear velocity | R_VCL | 0.9 (0.3) | 1 × 10–6 (0.09) | 0 | 0 |
| Ratio straight line velocity | R_VSL | 1.0 (0.3) | 0.06 (0.10) | 0 | 0 |
| Ratio viability | R_VIAB | 0.9 (0.3) | 0.08 (0.11) | 0 | 0 |
| Ratio acrosomes | R_ACRO | 3.4 (3.5) | 0.08 (0.11) | 1 | 0 |
All traits except stated are presented as a percentage
Number of SNPs = GWAS number of single nucleotide polymorphisms significantly associated (FDR) with the trait
The values shown are raw excepting the ratios which were previously corrected and stabilized
SD standard deviation, SE standard error