Table 1.
Abbreviations, their descriptions and units for variables and parameters used in the equations.
| Abbreviation | Description | Units |
|---|---|---|
| A | acetate proportion | mol/100 mol total VFA |
| B | total butyrate proportion | mol/100 mol total VFA |
| C2 | acetate quantity | mol |
| C3 | propionate quantity | mol |
| C4 | total butyrate quantity | mol |
| CH4P | methane production, stoichiometry | mol |
| CH4Y | methane yield, stoichiometry | mol/100 mol total VFA |
| DMI | dry matter intake | kg/d |
| MY | methane yield, predicted | g methane/kg DMI |
| P | propionate proportion | mol/100 mol total VFA |
| [P] | propionate concentration | mmol/L |
| VFA | Volatile fatty acids | mol |