Table 2.
Average daily gain throughout the feedlot period of Angus steers receiving different implant strategies.
| Implant Treatments 1 | p-Values of Contrasts 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| CON | E2 | TBA | ETBA | SEM | E2 vs. CON | TBA vs. CON | ETBA vs. CON | |
| Steers (n) | 13 | 11 | 12 | 11 | - | - | - | - |
| Average Daily Gain (kg) | ||||||||
| Day 0–28 | 0.93 | 1.32 | 1.41 | 1.46 | 0.12 | 0.03 | 0.007 | 0.003 |
| Day 28–56 | 1.34 | 1.39 | 1.32 | 1.69 | 0.18 | 0.81 | 0.93 | 0.05 |
| Day 56–84 | 2.44 | 2.07 | 2.50 | 2.20 | 0.18 | 0.13 | 0.78 | 0.30 |
| Day 84–112 | 1.21 | 1.53 | 1.49 | 1.80 | 0.20 | 0.17 | 0.22 | 0.01 |
| Day 112–129 | 1.70 | 1.87 | 2.00 | 2.24 | 0.27 | 0.66 | 0.39 | 0.14 |
| Day 0–129 | 1.49 | 1.61 | 1.69 | 1.88 | 0.07 | 0.20 | 0.03 | 0.0002 |
| Total Gain (kg) | 193.07 | 208.18 | 217.87 | 241.83 | 8.80 | 0.22 | 0.04 | 0.0002 |
1 Implant treatments administered on day 0 include: no implant (CON), Compudose (E2; 25.7 mg estradiol), Finaplix-H (TBA; 200 mg trenbolone acetate), and Revalor-S (ETBA; 120 mg trenbolone acetate + 24 mg estradiol). 2 Contrast statements were formed to test differences between E2, TBA, or ETBA vs. CON treatment.