Table 2 Number of bulls with genotypes and phenotypes (DYD) and average reliability of their phenotypes for each trait, in Montbéliarde (MON), Normande (NOR), and Holstein (HOL) cattle
Type of trait | Trait and abbreviation | Number of bulls with DYD | Reliability of DYD mean (sd) | ||||
|---|---|---|---|---|---|---|---|
MON | NOR | HOL | MON | NOR | HOL | ||
Milk production | Milk yield (kg) MY | 2434 | 2175 | 6262 | 0.91 (0.09) | 0.89 (0.11) | 0.92 (0.05) |
Fat content (%) FC | 2434 | 2175 | 6262 | 0.93 (0.08) | 0.92 (0.10) | 0.94 (0.04) | |
Protein content (%) PC | 2434 | 2175 | 6262 | 0.93 (0.08) | 0.92 (0.10) | 0.94 (0.04) | |
Fat yield (kg) FY | 2434 | 2175 | 6262 | 0.91 (0.09) | 0.89 (0.11) | 0.92 (0.05) | |
Protein yield (kg) PY | 2434 | 2175 | 6262 | 0.91 (0.09) | 0.89 (0.11) | 0.92 (0.05) | |
Udder health | Clinical mastitis CM | 1857 | 1427 | 4959 | 0.43 (0.21) | 0.40 (0.22) | 0.43 (0.21) |
Somatic cell score SCS | 2438 | 2203 | 6318 | 0.87 (0.07) | 0.85 (0.07) | 0.88 (0.06) | |
Udder morphology | Udder support US | 2494 | 2180 | 6311 | 0.83 (0.07) | 0.87 (0.06) | 0.82 (0.08) |
Udder depth UD | 2511 | 2020 | 6319 | 0.90 (0.05) | 0.83 (0.07) | 0.88 (0.06) | |
Fore udder attachment FUA | 2500 | 2164 | 5959 | 0.86 (0.07) | 0.82 (0.07) | 0.83 (0.08) | |
Rear udder height RUH | 2498 | 2147 | 6107 | 0.85 (0.07) | 0.74 (0.10) | 0.80 (0.09) | |
Teat length TL | 2515 | – | 6321 | 0.92 (0.05) | – | 0.89 (0.05) | |
Fore teat distance FTD | 2509 | 2032 | 6319 | 0.89 (0.06) | 0.86 (0.07) | 0.88 (0.06) | |
Udder balance UB | 2478 | 2164 | 6275 | 0.77 (0.09) | 0.81 (0.08) | 0.81 (0.09) | |
Teat orientation TO | 2500 | 2175 | 6318 | 0.86 (0.06) | 0.85 (0.06) | 0.85 (0.07) | |
Milking ease | Milking speed score MSS | 2500 | 2164 | 6300 | 0.86 (0.07) | 0.80 (0.08) | 0.79 (0.09) |