Improved Yolk Color
| Supplement | Research Paper | Effect Type | Effect Size |
|---|---|---|---|
| Bacillus subtilis AB22 | 10.1111/jpn.13022 | Beneficial | Moderate |
| Bacillus subtilis AB22 | 10.1093/PS/85.2.364 | Beneficial | Moderate |
| Bacillus Subtilis | 10.1093/PS/85.2.364 | Beneficial | Moderate |