Open Access
Table 3.
Degree of realization of genetic potential of stud bulls of different selection under traditional (tied-up) technology
| Selection | Number of bulls | Realization of genetic potential | ||
|---|---|---|---|---|
| according to milk yield, kg | according to fat mass fraction, % | according to protein mass fraction, % | ||
| Black-and-white breed | ||||
| Moscow | 3 | 81.6 ± 4.5 | 96.6 ± 1.9 | 96.4 ± 0.3*** |
| Leningrad | 8 | 63.6 ± 2.5** | 98.2 ± 1.8 | 101.0 ± 1.2* |
| Udmurt | 4 | 71.7 ± 2.7 | 92.9 ± 1.7* | 105.1 ± 0.9 |
| Holstein breed | ||||
| Moscow | 5 | 72.1 ± 3.1** | 88.8 ± 3.4 | 95.5 ± 2.3* |
| European | 5 | 55.5 ± 4.6*** | 93.8 ± 4.6 | 98.9 ± 3.4 |
| Canadian | 3 | 46.2 ± 2.2 | 86.7 ± 3.4 | 100.7 ± 0.9 |
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