Recommended Target Body Weights (kg) for Heifers of Different Ages
Heifer Age (mo) | % of Mature Body Weight | Small Breeds | Medium Breeds | Large Breeds |
|---|---|---|---|---|
Birth | 6.2 | 28 | 34 | 47 |
1 | 9.1 | 41 | 50 | 68 |
2 | 12.3 | 55 | 68 | 92 |
3 | 16.2 | 73 | 89 | 122 |
4 | 20.0 | 90 | 110 | 150 |
5 | 23.7 | 107 | 130 | 178 |
6 | 27.5 | 124 | 151 | 206 |
7 | 31.2 | 140 | 172 | 234 |
8 | 35.0 | 158 | 193 | 263 |
9 | 38.9 | 175 | 214 | 291 |
10 | 42.5 | 191 | 234 | 319 |
11 | 46.3 | 208 | 255 | 347 |
12 | 49.9 | 224 | 274 | 374 |
13a | 53.7 | 242 | 295 | 403 |
14a | 57.4 | 258 | 316 | 430 |
15a | 61.1 | 275 | 336 | 458 |
16 | 64.7 | 291 | 356 | 485 |
17 | 68.5 | 308 | 377 | 513 |
18 | 72.2 | 325 | 397 | 541 |
19 | 76.0 | 342 | 418 | 570 |
20 | 79.6 | 358 | 438 | 597 |
21 | 83.3 | 375 | 458 | 625 |
22b | 87.1 | 392 | 479 | 653 |
23b | 90.8 | 409 | 499 | 681 |
24b | 94.5 | 425 | 520 | 708 |
a Desired breeding period b Desired age at first calving |