Research Article
Genetic Parameters of Semen Traits and Their Correlations with Conformation Traits in Chinese Holstein Bulls
Table 2
Statistical description of semen and conformation traits.
| | Semen and conformation trait | Sample size for each trait | Mean ± standard deviation | Coefficient of variation (%) | Maximum | Minimum |
| | SVPE (mL) | 56980 | 6.52 ± 2.25 | 34.56 | 21.42 | 2.00 | | SMPE (%) | 56975 | 62.91 ± 7.47 | 11.87 | 85.00 | 40.00 | | SCPE (108/mL) | 56975 | 13.25 ± 4.55 | 34.32 | 36.73 | 2.00 | | PAS (%) | 6094 | 12.86 ± 3.89 | 30.29 | 38.00 | 0.00 | | TNS (108) | 56975 | 87.01 ± 42.7 | 49.08 | 392.32 | 4.68 | | TNMS (108) | 56975 | 55.23 ± 28.21 | 51.07 | 270.81 | 2.14 | | PTM (%) | 25594 | 37.01 ± 7.67 | 20.71 | 62.00 | 1.00 | | BW (kg) | 2550 | 616.66 ± 189.84 | 30.79 | 1287.00 | 330.00 | | WH (cm) | 2614 | 149.66 ± 10.81 | 7.22 | 190.00 | 127.00 | | BL (cm) | 2603 | 183.27 ± 22.36 | 12.20 | 252.00 | 133.00 | | CG (cm) | 2607 | 201.42 ± 21.21 | 10.53 | 284.00 | 155.00 | | AC (cm) | 2607 | 234.19 ± 20.98 | 8.96 | 318.00 | 186.00 | | TC (cm) | 2553 | 21.42 ± 1.77 | 8.28 | 28.00 | 17.00 | | PW (cm) | 2438 | 13.35 ± 1.61 | 12.04 | 23.00 | 11.00 | | HH (cm) | 2609 | 151.49 ± 9.22 | 6.09 | 185.00 | 120.00 | | SC (cm) | 2572 | 37.52 ± 3.49 | 9.30 | 51.50 | 26.00 |
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SVPE = semen volume per ejaculation; SMPE = sperm motility per ejaculation; SCPE = semen concentration per ejaculation; PAS = percentage of abnormal sperms; TNS = total number of spermss; TNMS = total number of motile sperms; PTM = postthaw motility; BW = body weight; WH = withers height; BL = body length; CG = chest girth; AC = abdominal circumference; TC = tube circumference; PW = pin width; HH = hip height; SC = scrotal circumference.
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