Table 1.
Analyzed composition of torula yeast and fish meal (as-fed basis)
| Item | Torula yeast | Fish meal1 |
|---|---|---|
| Gross energy, kcal/kg | 4,590 | 4,307 |
| DM, % | 95.43 | 91.45 |
| CP, % | 51.68 | 64.77 |
| Ash, % | 12.56 | 19.61 |
| Total Ca, % | 0.13 | 5.10 |
| Total P, % | 1.78 | 3.35 |
| Phytate, % | 0.25 | 0.82 |
| Phytate bound-P, % | 0.07 | 0.23 |
| Nonphytate P, % | 1.74 | 3.10 |
| Acid hydrolyzed ether extract, % | 3.22 | 7.14 |
| Total dietary fiber, % | 20.5 | 4.00 |
| Insoluble dietary fiber, % | 4.10 | 4.00 |
| Soluble dietary fiber, % | 16.4 | ND2 |
| NDF, % | 7.22 | 6.06 |
| ADF, % | 0.56 | 1.29 |
| Indispensable AA, % | ||
| Arg | 2.39 | 3.60 |
| His | 0.91 | 1.17 |
| Ile | 2.31 | 2.55 |
| Leu | 3.42 | 4.22 |
| Lys | 3.45 | 4.51 |
| Met | 0.58 | 1.61 |
| Phe | 2.10 | 2.44 |
| Thr | 2.35 | 2.40 |
| Trp | 0.62 | 0.55 |
| Val | 2.79 | 2.94 |
| Dispensable AA, % | ||
| Ala | 3.33 | 3.98 |
| Asp | 4.32 | 5.33 |
| Cys | 0.49 | 0.47 |
| Glu | 8.07 | 7.83 |
| Gly | 2.27 | 4.74 |
| Pro | 1.55 | 2.94 |
| Ser | 1.97 | 2.04 |
| Tyr | 1.67 | 1.68 |
| Total AA, % | 44.59 | 55.00 |
| Lys: CP ratio | 6.67 | 6.96 |
1The fish meal was a commercial source of menhaden fish meal (Omega Protein, Houston, TX).
2ND = nondetectable.