Genetic Parameters of Semen Traits and Their Correlations with Conformation Traits in Chinese Holstein Bulls
Table 3
Heritabilities (), repeatability (), and variance component estimates of direct additive genetic (), permanent environment (), and environmental () variances using the bivariate repeatability animal model.
Semen and conformation trait
Maximum
Minimum
Maximum
Maximum
SVPE (mL)
1.76
0.61
2.47
0.36
0.43
0.32
0.49
0.51
0.45
SMPE (%)
5.75
3.88
12.09
0.27
0.42
0.20
0.44
0.45
0.42
SCPE (108/mL)
7.44
12.39
41.21
0.12
0.22
0.10
0.32
0.33
0.32
PAS (%)
655.87
119.15
1004.24
0.37
0.40
0.33
0.43
0.46
0.40
TNS (108)
243.79
65.95
451.53
0.32
0.38
0.28
0.41
0.43
0.38
TNMS (108)
0.67
2.19
9.01
0.06
0.23
0.01
0.24
0.26
0.23
PTM (%)
5.68
11.34
46.80
0.09
0.22
0.02
0.27
0.33
0.26
BW (kg)
2265.78
62.55
4487.05
0.33
0.44
0.26
0.34
0.48
0.28
WH (cm)
30.60
1.57
17.86
0.59
0.77
0.48
0.62
0.79
0.51
BL (cm)
29.21
1.74
82.96
0.25
0.34
0.17
0.27
0.34
0.21
CG (cm)
35.98
1.06
70.89
0.33
0.43
0.25
0.34
0.46
0.28
AC (cm)
86.79
2.75
69.72
0.54
0.64
0.49
0.56
0.69
0.49
TC (cm)
0.34
0.14
0.71
0.28
0.42
0.12
0.40
0.50
0.33
PW (cm)
0.36
0.07
1.13
0.23
0.30
0.10
0.27
0.34
0.23
HH (cm)
35.94
1.19
13.68
0.69
0.81
0.63
0.71
0.83
0.64
SC (cm)
6.97
1.28
2.44
0.64
0.75
0.50
0.76
0.84
0.71
SVPE = semen volume per ejaculation; SMPE = sperm motility per ejaculation; SCPE = semen concentration per ejaculation; PAS = percentage of abnormal sperms; TNS = total number of sperms; 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.
