Research Article
Genetic Parameters of Semen Traits and Their Correlations with Conformation Traits in Chinese Holstein Bulls
Table 1
Quality control procedures of semen traits and conformation traits.
| Step | Content | Criterion | Sample size | Semen trait | Conformation trait |
| 1 | Semen and conformation traits | Raw data | 66,260 | 3,642 | 2 | SVPE | ≥2 mL | 65,600 | 3,642 | 3 | SCPE | ≥2 × 108/mL | 65,412 | 3,642 | 4 | SMPE | ≥0.4 | 64,087 | 3,642 | 5 | Semen traits | Removal of unmeasured data | 64,072 | 3,642 | 6 | Conformation traits | Removal of data before 2014 | 64,072 | 2,881 | 7 | Semen and conformation traits | Removal of data without birth date | 56,980 | 2,774 | 8 | Conformation traits | Removal of data without completion of three-generation pedigree | 56,980 | 2,635 |
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SVPE = semen volume per ejaculation; SCPE = semen concentration per ejaculation; SMPE = sperm motility per ejaculation.
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