Table 1. Genetic gain by breed between 2000 and 2005.
|
Genetic Progres |
||||||
| Trait | Holstein | Jersey |
Brown |
Guernsey | Ayrshire |
Milking |
| Lifetime Net Merit (Dollars) | 132 | 119 | 60 | 50 | 37 | 71 |
| Protein (Pounds) | 14 | 12 | 10 | 6 | 3 | 6 |
| Fat (Pounds) | 15 | 17 | 10 | 12 | 3 | 8 |
| Milk (Pounds) | 417 | 323 | 267 | 231 | 53 | 199 |
| Productive Life (Months) | 0.6 | 0.8 | 0.3 | 0.1 | 0.3 | 0.8 |
| Somatic Cell Score | -0.01 | 0.00 | 0.01 | 0.02 | -0.02 | 0.01 |
| Daughter Pregnancy Rate (%) | 0.0 | -0.1 | -0.5 | -0.4 | 0.1 | -0.1 |
| Udder Composite | 0.85 | 0.401 | 0.25 | 0.30 | 0.35 | 0.25 |
| Foot & Leg Composite | 0.65 | 0.20 | 0.10 | 0.30 | 0.15 | 0.15 |
| PTA Type | 0.87 | 0.62 | 0.30 | 0.54 | 0.25 | 0.00 |
