Item | High1 | Medium2 | Low3 | SEM4 | P-value |
|---|
|  | B4 | G4 | B | G | B | G | FP4 | S4 | FP × S |
|---|
Live wt4, kg | 111.5 | 108.4 | 109.2 | 107.8 | 107.1 | 94.8 | 2.8 | <0.01 | 0.02 | 0.12 |
Carcass wt, kg | 83.3 | 81.4 | 82.4 | 79.1 | 79.9 | 71.5 | 2.1 | <0.01 | 0.01 | 0.29 |
Dressing, % | 74.8 | 75.1 | 75.7 | 73.4 | 74.7 | 75.4 | 1.0 | 0.89 | 0.63 | 0.27 |
BFT4,5, mm | 21.4 | 20.9 | 23.8 | 21.9 | 23.2 | 21.9 | 1.3 | 0.38 | 0.22 | 0.86 |
Carcass grade6 | 2.14 ± 0.25 | 2.80 ± 0.30 | 2.00 ± 0.27 | 1.75 ± 0.33 | 2.40 ± 0.30 | 2.00 ± 0.66 |  | 0.14 | 0.99 | 0.23 |
- 1Provided with the nursery phases 1, 2 and 3 diets for 7, 14 and 12Â days, respectively.
- 2Provided with the nursery phases 2 and 3 diets for 14 and 19Â days, respectively.
- 3Provided with the nursery phases 2 and 3 diets and the high-plane grow-finish phase 1 diet for 7, 14 and 12Â days, respectively.
- 1-3See Table 1 for nutritional values of the diets used in each feeding program. Data are means of 10 animals in each sex, except for the carcass grade in which data are least squares means ± standard errors of means.
- 4B, barrow; G, gilt; SEM, standard error of mean; FP, feeding program during the nursery phase, S, sex; wt, weight; BFT, backfat thickness.
- 5Average of the measurements between the 11 and 12th ribs and at the last rib adjusted for a 110-kg live weight.
- 6Assigned 3, 2 and 1 of arbitrary point units to carcass grades 1+, 1 and 2, respectively. Grade 2 carcasses which did not reach the minimum weight (79Â kg) eligible for the grade 1[15] were excluded from the analysis
