fermentable organic matter (FOM) reflects the energy production and the potential of rumen's microbial protein synthesis. However, the method with fistulated animals for FOM measurement compromises animal welfare and is laborious as well as expensive. Although the alternative nylon bag technique has been widely used, it is also costly and requires rumen liquor. Therefore, the present study was performed to compare the nylon bag technique with the neutral detergent cellulase (NDC) method or chemical composition to estimate FOM of roughages. For this purpose, we selected 12 roughages, including six each from forages and crop residues. Our results have shown the strong correlation equations between FOM and FOM of forages (n = 6; R = 0.79), crop residues (n = 6; R = 0.80), and roughages (n = 12; R = 0.84), respectively. Moreover, there were also strong correlations between the chemical composition of roughages and FOM (n = 12; R = 0.84-0.93) or FOM (n = 12; R = 0.79-0.89). In conclusion, the NDC method and chemical composition were alternatives to nylon bag technique for predicting FOM of roughages in the current experiment.
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| http://dx.doi.org/10.3390/ani11061594 | DOI Listing |
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