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Amount (IU/kg of diet) of vitamin D3, vitamin D2, and 25-OHDroxyvitamin D3 (25-OHDOHD) supplemented to dietary treatments fed to laying hens at late stage of egg production.
| Treatment | Vitamin D2 | 25-OHD | Vitamin D3 |
|---|---|---|---|
| Control1 | 0 | 0 | 0 |
| Control + 3,000 IU 25-OHD | 0 | 3,000 | 0 |
| Control + 9,000 IU 25-OHD | 0 | 6,000 | 0 |
| Control + 3,000 IU D3 | 0 | 0 | 3,000 |
| Control + 9,000 IU D3 | 0 | 0 | 6,000 |
| Control + 3,000 IU D2 | 3,000 | 0 | 0 |
| Control + 9,000 IU D2 | 6,000 | 0 | 0 |
Control diet contains 3,000 IU of vitamin D3/kg of feed.
