Table 1.
Chemical composition (g/kg) rice straw fermented with Crabtree-positive and -negative yeasts (DM basis).
| Yeasts | Fermentation Days | Dry Matter g/kg | g/kg Dry Matter | |||||
|---|---|---|---|---|---|---|---|---|
| Organic Matter | Ether Extract |
Crude Protein | Neutral Detergent Fiber | Acid Detergent Fiber | Acid Detergent Lignin | |||
| Control | 7 | 296.6 | 828.0 | 6.57 | 61.46 | 735.2 | 481.3 | 63.41 |
| 14 | 289.7 | 859.0 | 6.79 | 60.43 | 722.1 | 480.3 | 62.88 | |
| 21 | 280.2 | 860.8 | 6.77 | 59.90 | 727.5 | 452.1 | 64.99 | |
| P. kudriavzevii KKU20 | 7 | 287.0 | 870.7 | 7.09 | 60.03 | 694.7 | 452.4 | 63.28 |
| 14 | 283.3 | 880.2 | 5.97 | 61.37 | 704.7 | 493.6 | 66.00 | |
| 21 | 263.8 | 879.9 | 6.23 | 60.93 | 721.5 | 446.9 | 68.10 | |
| C. tropicalis KKEU20 | 7 | 286.7 | 848.9 | 6.35 | 60.10 | 697.6 | 473.5 | 65.60 |
| 14 | 281.0 | 865.3 | 6.49 | 60.63 | 701.5 | 462.5 | 65.23 | |
| 21 | 259.3 | 862.2 | 7.13 | 60.97 | 711.4 | 469.8 | 62.60 | |
| S. cerevisiae KKU20 | 7 | 272.1 | 869.7 | 6.87 | 60.63 | 698.9 | 483.4 | 62.50 |
| 14 | 268.0 | 867.1 | 6.67 | 60.90 | 716.0 | 460.1 | 65.63 | |
| 21 | 249.8 | 872.3 | 6.80 | 60.00 | 695.8 | 451.0 | 64.43 | |
| SEM | 9.65 | 7.12 | 0.67 | 0.46 | 10.2 | 1.58 | 0.29 | |
| Comparison | ||||||||
| Yeast | Control | 289.0 a | 849.1 c | 6.71 | 60.90 | 728.3 a | 4671.2 | 64.87 |
| P. kudriavzevii KKU20 | 277.8 ab | 872.3 a | 6.43 | 60.00 | 706.9 b | 464.3 | 65.79 | |
| C. tropicalis KKU20 | 275.5 ab | 859.5 bc | 6.66 | 59.10 | 703.5 b | 468.6 | 64.48 | |
| S. cerevisiae | 263.2 b | 870.7 ab | 6.78 | 58.20 | 703.5 b | 464.8 | 64.19 | |
| Day | 7 | 285.0 a | 854.9 b | 6.72 | 57.30 | 706.6 | 472.6 | 64.53 |
| 14 | 280.7 a | 868.1 a | 6.48 | 56.40 | 711.1 | 474.1 | 64.94 | |
| 21 | 262.4 b | 869.3 a | 6.73 | 55.50 | 714.0 | 454.9 | 65.03 | |
| Interaction | Yeast × Day | ns | ns | ns | ns | ns | ns | ns |
| Orthogonal contrast | ||||||||
| Contrast 1 | Control | 289.0 a | 849.27 | 6.71 | 60.60 | 728.3 a | 471.2 | 63.76 |
| Yeast | 272.9 b | 868.47 | 6.62 | 60.62 | 704.7 b | 465.9 | 64.82 | |
| Contrast 2 | Yeast (−) | 276.3 | 867.87 | 6.54 | 60.51 | 705.2 | 466.4 | 64.19 |
| Yeast (+) | 263.2 | 869.67 | 6.78 | 60.67 | 703.6 | 464.8 | 65.14 | |
SEM: standard error of the mean; ns: mean non-significant among treatment; a,b,c Means in the same row with different superscripts differ (p < 0.01, p < 0.05).