Table 2.
Effect of in ovo feeding of a commercial product containing canthaxanthin at 17.5 d of embryo development on residual analysis (%) among unhatched eggs relative to the total number of incubated eggs.
| Residual analysis (%) | Commercial product containing canthaxanthin (mg/0.5 mL/egg) |
|||||
|---|---|---|---|---|---|---|
| 0.00 | 0.35 | 0.45 | 0.55 | 0.65 | P-value | |
| Infertile eggs | 9.50 | 8.50 | 7.90 | 8.10 | 9.25 | 0.5946 |
| MI | 2.60 | 2.24 | 2.23 | 3.16 | 2.99 | 0.9874 |
| MII | 2.20 | 1.00 | 2.51 | 1.35 | 2.90 | 0.5587 |
| MIII | 1.80 | 1.77 | 3.34 | 1.64 | 1.85 | 0.0910 |
| MIV | 1.27b | 3.90b | 10.31a | 19.14a | 19.62a | >0.0001 |
| Pipped dead | 1.10c | 6.33b | 9.20a | 15.90a | 12.91a | >0.0001 |
| Pipped alive | 0.80b | 6.33a | 6.51a | 9.90a | 11.1a | >0.0001 |
| Abnormal alive | 0.15 | 0.00 | 0.52 | 0.00 | 0.00 | 1.0000 |
| Abnormal dead | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.9211 |
| Unpipped alive | 0.50b | 4.81a | 3.11a | 5.12a | 6.55a | 0.0153 |
| Contaminated eggs | 1.10 | 0.50 | 0.00 | 0.87 | 0.00 | 0.124 |
a–cMeans within a row with different superscript letters are different by Fisher Exact test (P < 0.05).
Abbreviations: MI, mortality from 0 to 4 d of embryo development; MII, mortality from 5 to 10 d of embryo development; MIII, mortality from 11 to 17 d of embryo development; MIV, mortality from 18 to 21 d of embryo development.