Table 2. Choline addition and levels in diet.
| Item,g/kg diet | 23–37 d | 38–73 d | 74–120 d | 120-200d | ||||
|---|---|---|---|---|---|---|---|---|
| B | C | B | C | B | C | B | C | |
| 50% Choline chloride addition | 0 | 3.60 | 0 | 3.23 | 0 | 3.12 | 0 | 3.03 |
| Calculated level | ||||||||
| Choline addition | 0 | 1.34 | 0 | 1.20 | 0 | 1.16 | 0 | 1.13 |
| Total choline | 1.34 | 2.68 | 1.20 | 2.40 | 1.16 | 2.32 | 1.13 | 2.26 |
| Analyzed level | ||||||||
| Choline | 1.59 | 2.98 | 1.33 | 2.77 | 1.40 | 2.71 | 1.40 | 2.75 |
| Choline chloride | 0.08 | 1.73 | 0.24 | 1.56 | 0.25 | 1.50 | 0.25 | 1.45 |
B = basal diet; C = diet with choline
The total choline content was calculated according to Feed Composition and Nutritive Values in the database website of China Feed (22nd rev) [24].