Table 5.
Effect of EO on the relative organ weight of Muscovy ducks (g/kg, n = 6).
| Items | CON | EO100 | EO200 | EO300 |
P value |
||||
|---|---|---|---|---|---|---|---|---|---|
| EO | Linear | Quadratic | |||||||
| 28 d of age | |||||||||
| Liver index | 27.66 ± 2.54 | 25.58 ± 4.13 | 26.78 ± 1.96 | 26.64 ± 1.19 | 0.617 | 0.708 | 0.385 | ||
| Spleen index | 1.20 ± 0.18 | 1.19 ± 0.13 | 1.34 ± 0.12 | 1.43 ± 0.22 | 0.062 | 0.012 | 0.466 | ||
| Bursal index | 1.82 ± 0.31 | 1.85 ± 0.21 | 2.19 ± 0.20 | 1.98 ± 0.27 | 0.082 | 0.099 | 0.249 | ||
| 56 d of age | |||||||||
| Liver index | 21.60 ± 3.00 | 21.48 ± 1.32 | 21.18 ± 4.51 | 21.46 ± 2.72 | 0.996 | 0.897 | 0.877 | ||
| Spleen index | 0.85 ± 0.13 | 0.95 ± 0.11 | 1.02 ± 0.13 | 0.93 ± 0.06 | 0.102 | 0.148 | 0.047 | ||
| Bursal index | 0.31 ± 0.07b | 0.35 ± 0.04ab | 0.44 ± 0.07a | 0.40 ± 0.06ab | 0.012 | 0.008 | 0.112 | ||
a,b
Values within a row with different letters differ significantly (P < 0.05).