Table 2.
Composition of experimental feeds1 used in experiment 2 (as-fed basis)
| Item | Basal feed |
|---|---|
| Feedstuff, % | |
| Corn, yellow | 51.87 |
| Soybean meal, 48% crude protein | 33.00 |
| Corn DDGS2 | 10.00 |
| l-Lys HCl | 0.30 |
| dl-Met | 0.05 |
| l-Thr | 0.05 |
| Salt | 0.30 |
| Vitamin and mineral premix3 | 0.18 |
| Dicalcium phosphate | 0.55 |
| Limestone | 1.20 |
| Poultry fat | 2.00 |
| Total | 100.00 |
| Calculated composition | |
| ME, Mcal/kg | 3.39 |
| Crude protein, % | 23.16 |
| SID4 Lys, % | 1.25 |
| SID Thr, % | 0.75 |
| SID Trp, % | 0.24 |
| Total mannan5, % | 0.62 |
| Analyzed composition | |
| Dry matter, % | 91.28 |
| Crude protein, % | 21.41 |
| Ca, % | 0.65 |
| P, % | 0.60 |
| NDF6, % | 8.60 |
| ADF7, % | 4.01 |
1β-Mannanase was added at 0, 500, or 750 mg/kg of basal feed to adjust as 0, 400, or 600 unit/kg. Analyzed β-mannanase activities in the experimental diet were 0, 477 ± 32, or 697 ± 21 U/kg of feeds.
2DDGS, distiller’s dried grains with solubles.
3The vitamin premix provided per kg of complete diet: 8,433 IU of vitamin A, 1,202 IU of vitamin D3 as activated animal sterol, 48 IU of vitamin E, 4.0 mg of vitamin K as menadione dimethylpyrimidinol bisulfate, 6.0 mg of riboflavin, 36.2 mg of niacin, 24.1 mg of d-pantothenic acid as calcium pantothenate, 1.8 mg of folic acid, 0.24 mg of d-biotin, 0.031 mg of vitamin B12. The trace mineral premix provided per kg of complete diet: 16.5 mg of Cu as CuSO4, 0.3 mg I as ethylenediamine dihydriodide, 165 mg of Fe as FeSO4, 40 mg of Mn as MnSO4, 0.3 mg of Se as Na2SeO3, and 165 mg of Zn as ZnO.
4SID, standardized ileal digestible.
5Calculated based on Kiarie et al. (2021).
6NDF, neutral detergent fiber.
7ADF, acid detergent fiber.