Table 6. Effect of CSM level with or without enzyme blend on meat yield1 in absolute (g of carcass wt) and relative weight (g/100 of carcass wt) at 35 days of age
Treatment | Absolute weight | Relative to live weight |
CSM levels | Enzyme (mg/kg) | Dressing (%) | Breast | Thighs | Wings | Drumsticks | Breast | Thighs | Wings | Drumsticks |
Control | 0 | 76.0 | 537.9 | 258.2 | 198.3 | 236.5 | 202.2 | 97.2 | 74.8 | 88.9 |
| 100 | 76.8 | 562.7 | 260.6 | 199.9 | 242.2 | 206.9 | 95.8 | 73.5 | 89.0 |
Low2 | 0 | 76.4 | 528.5 | 258.8 | 187.4 | 233.4 | 202.4 | 99.0 | 71.8 | 89.3 |
| 100 | 76.9 | 587.1 | 278.7 | 208.9 | 257.0 | 210.4 | 99.8 | 74.8 | 91.9 |
Medium3 | 0 | 76.5 | 538.7 | 275.9 | 186.9 | 241.7 | 203.2 | 103.9 | 70.5 | 91.1 |
| 100 | 77.2 | 552.1 | 290.9 | 189.1 | 250.8 | 203.2 | 103.3 | 71.7 | 90.1 |
High4 | 0 | 76.8 | 537.9 | 283.7 | 193.5 | 263.4 | 195.2 | 103.2 | 70.3 | 95.7 |
| 100 | 77.0 | 562.7 | 283.8 | 198.8 | 250.1 | 203.7 | 102.3 | 71.7 | 90.3 |
SEM | | 0.18 | 5.58 | 3.41 | 2.20 | 2.87 | 0.15 | 0.09 | 0.05 | 0.06 |
Main effects | | | | | | | | | | |
CSM Levels | | | | | | | | | | |
Control | | 76.4 | 550.3 | 259.4b | 199.3 | 239.3 | 204.6 | 96.5b | 74.1 | 90 |
Low | | 76.6 | 557.8 | 268.8ab | 198.2 | 245.2 | 206.4 | 99.4ab | 73.3 | 90.6 |
Medium | | 76.8 | 545.4 | 283.4ab | 188 | 246.2 | 203.2 | 103.6a | 71.1 | 90.6 |
High | | 76.9 | 550.3 | 283.7a | 195.9 | 256.8 | 199.4 | 102.7a | 71.0 | 93.0 |
Enzyme (mg/kg) | | | | | | | | | | |
| 0 | 76.4 | 535.8b | 269.1 | 191.7 | 243.7 | 200.8b | 100.8 | 71.8 | 91.3 |
| 100 | 76.9 | 566.2a | 278.5 | 199.1 | 250.0 | 206.0a | 100.3 | 72.9 | 91.3 |
Significance | | | | | | | | | | |
CSM | | 0.756 | 0.875 | 0.024 | 0.234 | 0.165 | 0.404 | 0.015 | 0.068 | 0.122 |
Enzyme | | 0.126 | 0.007 | 0.149 | 0.084 | 0.252 | 0.083 | 0.745 | 0.271 | 0.440 |
CSM× Enzyme | | 0.944 | 0.481 | 0.630 | 0.289 | 0.136 | 0.722 | 0.975 | 0.476 | 0.125 |
Values are means of 6 replicates (10 birds per replicate).
Means with different superscripts within the columns are different (p < 0.05).
Meat yield refers to breast, thighs, wings, and drumsticks.
CSM low level: 4%, 8%, and 12% of complete diet introduced in the starter, grower, and finisher period, respectively.
CSM medium level: 5%, 10%, and 15% of complete diet introduced in the starter, grower, and finisher period, respectively.
CSM high level: 6%, 12%, and 18% of complete diet introduced in starter, grower, and finisher phases of growth, respectively
SEM, standard error of means; CSM, cottonseed meal.