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4 | Target Weights for Heifers | |||||
5 | Q: What is your mature cow weight (MCW) a.k.a. Standard Reference Weight? | |||||
6 | A: The average weight of your PTE cows in BCS 2.5 (e.g. as sold at weaning). | |||||
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8 | MCW | 6m | 9m | 15m | 21m | 24m |
9 | Weaning | Late Autumn drench | Joining | Autumn drench pre-calving | At Calving | |
10 | 100% | 30% | 45% | 60% | 82% | 90% |
11 | 500 | 150 | 225 | 300 | 410 | 450 |
12 | 525 | 158 | 236 | 315 | 431 | 473 |
13 | 550 | 165 | 248 | 330 | 451 | 495 |
14 | 575 | 173 | 259 | 345 | 472 | 518 |
15 | 600 | 180 | 270 | 360 | 492 | 540 |
16 | 625 | 188 | 281 | 375 | 513 | 563 |
17 | 650 | 195 | 293 | 390 | 533 | 585 |
18 | 675 | 203 | 304 | 405 | 554 | 608 |
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20 | Comments | |||||
21 | There are a wide range of industry references for joining weight as a percentage of MCW with examples including 55-60% and 65-70%. | |||||
22 | I would suggest that in Spring Calving herds in high rainfall zones (winter/spring dominant) that 60% is plenty. | |||||
23 | We join heifers as light as 50% but these heifers are more at risk of missing later targets and not re-breeding. | |||||
24 | Onset of puberty is influenced by type (frame/maturity pattern) and nutrition (growth rate/condition). | |||||
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27 | Copyright © 2021 Julian Carroll | https://stellarlivestock.com.au/resources/ | 10-Dec-2024 | |||