Table 1 Summary of the phenotypic information for calving interval (CI), milk, fat and protein yields in genotyped Holstein and Jersey cows
Trait | Holstein | Jersey | ||
|---|---|---|---|---|
Nb of records (animals) | Mean ± SD | Nb of records (animals) | Mean ± SD | |
CI | 25,228 (7902) | 394 ± 62 | 11,653 (4014) | 397 ± 63 |
Milk yield | 23,283 (7510) | 7173 ± 1767 | 10,170 (3685) | 5706 ± 1206 |
Fat yield | 23,283 (7510) | 280 ± 67 | 10,170 (3685) | 284 ± 58 |
Protein yield | 23,283 (7510) | 237 ± 58 | 10,170 (3685) | 216 ± 46 |