Table 2.
Estimates of phenotypic variance and ratios with respect to phenotypic variance for additive genetic (h2), herd within region-year-season (hrys2), service sire by year of insemination (ss2), artificial insemination technician (tech2), and residual (e2) variances (standard errors in parentheses)
| Traitsa | Phenotypic variance | h2 (%) | hrys2 (%) | tech2 (%) | ss2 (%) | e2 (%) |
|---|---|---|---|---|---|---|
| MY (kg) | 2,740,757 | 26.02 (1.89) | 28.17 (0.90) | 45.81 (1.79) | ||
| FY (kg) | 4889.50 | 22.57 (1.77) | 31.98 (0.90) | 45.45 (1.68) | ||
| PY (kg) | 2663.70 | 21.69 (1.67) | 33.35 (0.90) | 44.96 (1.60) | ||
| AFS_H (day) | 2410.50 | 4.25 (0.67) | 60.24 (0.56) | 35.51 (0.71) | ||
| NS_H | 0.87 | 1.96 (0.42) | 6.81 (0.54) | 91.23 (0.67) | ||
| NRR_H | 0.21 | 1.31 (0.25) | 2.78 (0.47) | 1.44 (0.03) | 0.56 (0.16) | 93.91 (0.58) |
| FSTC_H (day) | 1118.60 | 2.12 (0.47) | 6.20 (0.55) | 91.68 (0.70) | ||
| CTFS_C (day) | 594.27 | 6.59 (1.13) | 39.90 (1.01) | 53.51 (1.32) | ||
| NS_C | 1.65 | 4.21 (0.85) | 2.78 (0.46) | 93.01 (1.08) | ||
| NRR_C | 0.25 | 3.07 (0.58) | 2.33 (0.59) | 0.64 (0.33) | 0.03 (0.12) | 93.93 (0.81) |
| FSTC_C (day) | 1920.90 | 3.19 (0.93) | 3.18 (0.69) | 93.63 (1.13) |
a MY milk yield, FY fat yield, PY protein yield, AFS_H age at first service for heifers, NS_H number of service for heifers, NRR_H 56-day non-return rate for heifers, FSTC_H first service to conception for heifers, CTFS_C conception to first service for cows, NS_C number of service for cows, NRR_C 56-day non-return rate for cows, FSTC_C first service to conception for cows