Section 20: Definition and Terminology
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NOTE: This version of Section 20 has been approved by the working group's Chair. Please be aware that further revisions may occur before final review and approval by the Board and ICAR members per the Approval of Page Process.
The following table contains a list of important definitions for terms and abbreviations used in guidelines and SOP.
| Term | Definition |
|---|---|
| ADF | Acid Detergent Fibre |
| ADL | Lignin |
| BCS | Body Condition Score |
| CH4 | Methane |
| CV | Coefficient of Variation |
| DIM | Days In Milk |
| DMI | Dry Matter Intake |
| DMPR | Daily Methane Production Rate |
| EE | Ether Extract |
| Enteric methane | Methane from ruminant livestock generated during microbial fermentation in the rumen and hindgut |
| EOBC | Essential Oils and their Bioactive Compounds |
| FTIR | Fourier-Transform InfraRed |
| GE | Gross Energy intake |
| GHG | Greenhouse gas |
| LMD | Laser Methane Detector |
| ME | Metabolizable Energy |
| MeI | CH4 intensity |
| MeP | CH4 production (liters or grams per day) |
| MeY | CH4 yield |
| MIR | Milk Mid-InfraRed spectoscopy |
| NDF | Neutral Detergent Dibre |
| NDIR | NonDispersive InfraRed |
| PAC | Portable Accumulation Chamber |
| PAIR | PhotoAcustic InfraRed |
| Proxy | Not methane itself, but a substance enabling to measure methane levels indirectly - easy, cheap, accurate, quantitative |
| PY | Protein Yield |
| RMP | Residual Methane Production |
| RMPR | Residual Methane Production Rate |
| RMSPE | Root Mean Square Prediction Error |
| SF6 | SF6 tracer gas technique |
| TMR | Total mixed ration |
| VFA | Volatile Fatty Acid |
| Ym | Methane conversion rate |
