Table 2.
Distribution of mean values of birth weight (kg), age at first calving (day), number of calves born (head) and productive lifespan (day) and their ±standard errors among the four groups (A-C-M, F-J-L-N-O-P, B-D-E-G-H-I, and K) identified by Structure-clustering
| Measured traits | A-C-M | F-J-L-N-O-P | B-D-E-G-H-I | K |
|---|---|---|---|---|
| birth weight (kg) | 25.9a±2.7 | 29.3b±5.3 | 27.2c±4.4 | 27.6abc±5.9 |
| age at first calving (d) | 869a±206 | 829b±156 | 891d±226 | 945abd±320 |
| number of calves born | 4.8a±3.6 | 5.9b±3.5 | 6.3bc±3.6 | 8.4c±4.1 |
| productive lifespan (d) | 1,996a±1,535 | 2,221a±1,677 | 2,563d±1,520 | 3,556c±1,758 |
a–d
Means with different uppercase letters in the same row are significantly different from each other at p<0.05.