Table 3.
Baseline performance dataa for growing cattle within the model
| Cattle group | Mato Grosso | Mato Grosso do Sul | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean age, mo | Start weight, kg | End weight, kg | ADG, kg/d | Mean age, mo | Start weight, kg | End weight, kg | ADG, kg/d | |
| Preweaned calves | ||||||||
| Nelore bull | 3.9 | 31 | 180 | 0.621 | 3.9 | 35 | 180 | 0.604 |
| Nelore heifer | 3.9 | 31 | 180 | 0.621 | 3.9 | 35 | 180 | 0.604 |
| Crossbred heifer | 3.9 | 39 | 190 | 0.631 | 3.9 | 39 | 190 | 0.631 |
| Growing cattle destined for finishing farm | ||||||||
| Nelore bull | 16.0 | 180 | 402 | 0.454 | 16.0 | 180 | 380 | 0.408 |
| Nelore heifer | 16.0 | 180 | 372 | 0.392 | 16.0 | 180 | 348 | 0.342 |
| Cattle in finishing farm | ||||||||
| Nelore bull | 30.0 | 402 | 568 | 0.454 | 30.0 | 380 | 529 | 0.408 |
| Nelore heifer | 30.0 | 372 | 515 | 0.392 | 30.0 | 348 | 472 | 0.342 |
| Growing cattle destined for feedlot | ||||||||
| Nelore bull | 16.0 | 180 | 360 | 0.367 | 16.0 | 180 | 360 | 0.367 |
| Nelore heifer | 16.0 | 180 | 308 | 0.260 | 16.0 | 180 | 308 | 0.260 |
| Crossbred heifer | 14.0 | 190 | 346 | 0.424 | 14.0 | 190 | 346 | 0.424 |
| Finishing cattle in feedlot b | ||||||||
| Nelore bull | 25.7 | 360 | 526 | 1.650 | 25.7 | 360 | 526 | 1.650 |
| Nelore heifer | 26.0 | 308 | 456 | 1.222 | 26.0 | 308 | 456 | 1.222 |
| Crossbred heifer | 22.0 | 346 | 519 | 1.417 | 22.0 | 346 | 519 | 1.417 |
a All performance data were either supplied directly from the beef operations involved in the study (ages and weights at start and end of each production stage) or derived from the modeling analysis (interim ages and weights, ADG, DMI).
b Cow-calf and finishing operations were based in Mato Grosso and Mato Grosso do Sul; bull feedlot was based in Goiás and heifer feedlot was based in São Paulo.