Table 6.
Effect of dietary 25-OH-D3 on tibia quality of laying hens under high or low stocking density1.
| Item | Strength, kgf | Ash, % | Ca, % | P, % |
|---|---|---|---|---|
| Density 25-OH-D3 | ||||
| Low− | 16.88 ± 1.40 | 52.96 ± 1.35 | 19.50 ± 0.42 | 8.10 ± 0.21 |
| Low+ | 18.95 ± 1.65 | 53.49 ± 2.09 | 19.68 ± 0.55 | 7.90 ± 0.11 |
| High− | 15.80 ± 0.97 | 51.76 ± 1.01 | 18.87 ± 0.31 | 7.90 ± 0.22 |
| High+ | 17.23 ± 1.19 | 51.37 ± 0.95 | 18.92 ± 0.42 | 7.80 ± 0.13 |
| P-value | 0.15 | 0.16 | 0.30 | 0.40 |
| Main effect P-value | ||||
| Density | 0.16 | 0.04 | 0.04 | 0.07 |
| 25-OH-D3 | 0.05 | 0.79 | 0.96 | 0.07 |
| Density*25-OH-D3 | 0.74 | 0.77 | 0.91 | 0.30 |
a-bMeans with different superscripts within a column differ significantly (P < 0.05).
Abbreviation: 25-OH-D3, 25-hydroxycholecalciferol.
1
Each mean represents 10 replicates per treatment, with 10 layer per replicate.