Table 4. Yield of carcass and cuts of broilers fed diets containing different levels of cottonseed oil (CO) with and without addition of ferrous sulfate (FS), at 21 days of age.
| Main effect | CYLD | BYLD | TYLD | DYLD | WYLD |
|---|---|---|---|---|---|
| CO (%) | (%) | ||||
| 0 | 67.64 | 33.04 | 13.61 | 15.98 | 12.24 |
| 2 | 68.90 | 32.64 | 14.23 | 16.03 | 12.10 |
| 4 | 68.13 | 32.93 | 14.32 | 16.15 | 11.81 |
| 6 | 68.23 | 32.96 | 14.41 | 16.02 | 11.85 |
| FS | |||||
| Without | 68.46 | 32.89 | 14.23 | 15.95 | 11.91 |
| With | 67.98 | 32.89 | 14.06 | 16.13 | 12.08 |
| CV (%) | 1.82 | 7.63 | 7.10 | 3.70 | 4.40 |
| Source of variation | Probability > F | ||||
| FS | 0.227 | 0.987 | 0.929 | 0.361 | 0.336 |
| CO | 0.087 | 0.749 | 0.331 | 0.893 | 0.134 |
| CO × FS | 0.151 | 0.817 | 0.859 | 0.103 | 0.763 |
CYLD, carcass yield; BYLD, breast yield; DYLD, drumstick yield; TYLD, thigh yield; WYLD, wing yield; CV, coefficient of variation.