Estimation of Fiber Fragility and Digestibility of Corn Silages and Cool Season Pastures
Abstract
:1. Introduction
2. Materials and Methods
2.1. Sample Collections
2.2. Particle Size Distribution, Chemical Composition, and In Situ Degradation
2.3. Statistical Analysis
3. Results
3.1. Chemical Composition, Fragility, and In Situ Degradation of Corn Silage and Cool-Season Pastures
3.2. Correlation between In Situ Degradation, Fragility, and Chemical Composition
3.3. Estimation of Fiber Fragility
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Conflicts of Interest
References
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Item | CS 1 | PAS 2 | p 3 |
---|---|---|---|
Fragility, g/kg | 11.79 | <0.001 | |
Chemical composition, g/kg | |||
DM 4, g/kg natural matter | 7.2 | <0.001 | |
NDF 5 | 14.6 | <0.001 | |
ADF 6 | 0.001 | ||
ADL 7 | 0.013 | ||
CP 8 | 2.22 | <0.001 | |
ADF–NDF ratio | 0.01 | 0.005 | 0.100 |
In situ degradation, g/kg | |||
DM 4 | 17.6 | 20.6 | <0.001 |
NDF 5 | 34.6 | <0.001 |
Item | DM 1 | NDF 2 | ADF 3 | ADF–NDF 4 | ADL 5 | CP 6 | Fragility |
---|---|---|---|---|---|---|---|
General | |||||||
Fragility | 0.45 (0.001) | 0.58 (<0.001) | 0.60 (<0.001) | 0.33 (0.020) | 0.62 (<0.001) | −0.56 (<0.001) | - |
DMD 7 | −0.62 (<0.001) | −0.80 (<0.001) | −0.87 (<0.001) | −0.52 (<0.001) | −0.80 (<0.001) | 0.70 (<0.001) | −0.68 (<0.001) |
NDFD 8 | −0.65 (<0.001) | −0.67 (<0.001) | −0.78 (<0.001) | −0.50 (<0.001) | −0.74 (<0.001) | 0.71 (<0.001) | −0.67 (<0.001) |
Corn silage | |||||||
Fragility | −0.09 (0.669) | 0.32 (0.122) | 0.35 (0.834) | 0.32 (0.117) | 0.45 (0.023) | −0.17 (0.430) | - |
DMD 7 | 0.38 (0.061) | −0.59 (0.035) | −0.73 (<0.001) | −0.60 (0.002) | −0.73 (<0.001) | −0.01 (0.959) | −0.43 (0.029) |
NDFD 8 | 0.27 (0.193) | −0.14 (0.521) | −0.43 (0.0337) | −0.47 (0.019) | −0.50 (0.011) | −0.04 (0.849) | −0.38 (0.060) |
Cool-season pasture | |||||||
Fragility | 0.12 (0.548) | 0.37 (0.069) | 0.35 (0.081) | 0.06 (0.795) | 0.42 (0.036) | −0.10 (0.649) | - |
DMD 7 | −0.74 (<0.001) | −0.82 (<0.001) | −0.86 (<0.001) | −0.30 (0.160) | −0.59 (0.002) | 0.60 (0.002) | −0.36 (0.078) |
NDFD 8 | −0.76 (<0.001) | −0.76 (<0.001) | −0.81 (<0.001) | −0.34 (0.096) | −0.06 (0.004) | 0.61 (0.001) | −0.38 (0.065) |
Response Variable | Intercept | Variable 1 | Variable 2 | R² | RQME 4 | p 5 | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
EST 1 | EPM 2 | VAR 3 | EST 1 | EPM 2 | VAR 3 | EST 1 | EPM 2 | ||||
Model 1 | 242 | 34.8 | DMD 6 | −0.249 | 0.045 | - | - | - | 0.388 | 41.2 | <0.001 |
Model 2 | 60.4 | 17.59 | CP 7 | −0.214 | 0.068 | ADL 8 | 0.764 | 0.298 | 0.358 | 42.7 | <0.001 |
Model 3 | 157 | 33.9 | NDFD 9 | −0.205 | 0.086 | - | - | - | 0.200 | 53.0 | 0.030 |
Model 4 | 46.7 | 41.10 | ADL 9 | 0.854 | 0.450 | - | - | - | 0.135 | 56.0 | 0.071 |
Model 5 | 270 | 66.6 | DM 10 | −0.376 | 0.148 | DMD 6 | −0.213 | 0.052 | 0.458 | 15.5 | 0.001 |
Model 6 | −32.3 | 21.37 | ADF 11 | 0.225 | 0.084 | - | - | - | 0.237 | 17.9 | 0.014 |
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Facco, F.B.; Heller, R.G.; Santos, V.; Viégas, J.; Takiya, C.S.; Gandra, J.R.; Del Valle, T.A. Estimation of Fiber Fragility and Digestibility of Corn Silages and Cool Season Pastures. Agriculture 2024, 14, 1345. https://doi.org/10.3390/agriculture14081345
Facco FB, Heller RG, Santos V, Viégas J, Takiya CS, Gandra JR, Del Valle TA. Estimation of Fiber Fragility and Digestibility of Corn Silages and Cool Season Pastures. Agriculture. 2024; 14(8):1345. https://doi.org/10.3390/agriculture14081345
Chicago/Turabian StyleFacco, Francine B., Richander G. Heller, Vitória Santos, Julio Viégas, Caio S. Takiya, Jefferson R. Gandra, and Tiago A. Del Valle. 2024. "Estimation of Fiber Fragility and Digestibility of Corn Silages and Cool Season Pastures" Agriculture 14, no. 8: 1345. https://doi.org/10.3390/agriculture14081345