Table 4.
Immune organ index of Ningdu yellow chickens.
| Items | Additive amount of TCP |
SEM |
P value |
||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.0% | 0.2% | 0.4% | 0.6% | 0.8% | ANOVA | Linear | Quadratic | ||
| Spleen index | 1.54 | 1.47 | 1.58 | 1.69 | 1.72 | 0.05 | 0.476 | 0.096 | 0.225 |
| Bursa of Fabricius index | 0.51 | 0.35 | 0.42 | 0.58 | 0.51 | 0.03 | 0.251 | 0.341 | 0.427 |
| Thymus index | 1.24 | 1.23 | 1.25 | 1.37 | 1.13 | 0.08 | 0.934 | 0.897 | 0.867 |
Values are the means and SEM of 12 broilers (2 broilers per replicate).
Abbreviations: SEM, standard error of the mean; TCP, traditional Chinese prescription.