Abstract #T79
Section: Forages and Pastures (posters)
Session: Forages and Pastures 1
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Exhibit Hall A
Session: Forages and Pastures 1
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Exhibit Hall A
# T79
The difference of chemical composition and NDF digestibility of corn stalk treated with different fungus.
Y. J. Tian1,2, L. Ma1, D. P. Bu*1, Z. L. Fu1, 1State Key Laboratory of Animal Nutrition. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China, 2Department of Animal Science, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China.
Key Words: corn stalk, fungal incubation, lignin
The difference of chemical composition and NDF digestibility of corn stalk treated with different fungus.
Y. J. Tian1,2, L. Ma1, D. P. Bu*1, Z. L. Fu1, 1State Key Laboratory of Animal Nutrition. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China, 2Department of Animal Science, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China.
The objective of this paper was to evaluate chemical composition and NDF digestibility of corn stalk treated with fungi strain, Lentinula edodes (L), Pleurotus eryngii (P) or mixing strain (L+P), respectively. Corn stalk were randomly assigned to 3 treatments and incubated in plastic culture bottle. Samples were obtained on wk 0, 1, 3, 6, 9 for nutritive value and NDF digestibility determination using the near-infrared (NIR) method. All data were analyzed using MIXED procedure in SAS (version 9.4) with fungus, Time (W), and their interaction as fixed effects. The results showed that: (1) CP, ADF and lignin were differed between samples with different fungi strain treatment process (P < 0.05). Corn stalk samples with fungal incubation time were significantly different in Moisture, pH, CP, ADICP, NDICP, ADF, lignin and WSC (P < 0.01). The interaction of fungi strain treatment and fermentation treatment had significant effect on the content of lignin (P < 0.01). (2) A fungus treatment × incubation time interaction also occurred for NDFD30, NDFD120, NDFD240, uNDFom30 and uNDFom240, respectively (P < 0.01). L+P group had the lowest NDFD30, NDFD120, NDFD240 content than the other 2 treatment. Therefore, it was concluded that Lentinula edodes and Pleurotus eryngii had a great potential to decrease the content of lignin and enhance NDF digestibility of corn stalk, but Lentinula edodes or Pleurotus eryngii treatment effect was better than they mixed treatment result.
Table 1 (Abstr. T79). Chemical composition and NDF digestibility of different fungi strain treated corn stalk from 0 to 9 weeks
| Item | Treatment | SEM | P-value | ||||
| L | P | L+P | Trt | Week | Trt × Week | ||
| Moisture | 88.77 | 88.72 | 89.28 | 0.223 | 0.18 | <0.01 | 0.27 |
| pH | 4.75 | 4.68 | 4.69 | 0.031 | 0.25 | <0.01 | 0.28 |
| CP | 4.21 | 5.00 | 4.74 | 0.296 | 0.02 | <0.01 | 0.11 |
| ADICP | 1.02 | 1.07 | 1.09 | 0.032 | 0.19 | 0.01 | 0.12 |
| NDICP | 0.88 | 0.91 | 0.95 | 0.038 | 0.35 | 0.01 | 0.15 |
| ADF | 47.97 | 45.92 | 46.17 | 0.638 | 0.01 | 0.01 | 0.68 |
| Lignin | 4.26 | 4.33 | 5.25 | 0.143 | <0.01 | <0.01 | <0.01 |
| WSC | 4.56 | 4.65 | 4.74 | 0.183 | 0.78 | <0.01 | 0.32 |
| NDFD30 | 69.17 | 69.64 | 64.31 | 0.664 | <0.01 | <0.01 | <0.01 |
| NDFD120 | 83.68 | 83.17 | 78.79 | 0.583 | <0.01 | <0.01 | <0.01 |
| NDFD240 | 85.56 | 85.41 | 80.69 | 0.719 | <0.01 | <0.01 | <0.01 |
| uNDFom30 | 23.72 | 23.42 | 26.83 | 0.341 | <0.01 | <0.01 | <0.01 |
| uNDFom240 | 11.68 | 10.74 | 14.90 | 0.531 | <0.01 | <0.01 | <0.01 |
Key Words: corn stalk, fungal incubation, lignin
