Data variables
'SSA Feeds' provides data on the following nutritional variables:
| Variable | Variable name | Unit | Method |
| DM | Dry matter | % Dried basis | 105ºC ,12 hours overnight |
| OM | Organic matter | % of DM | 500ºC, 12 hours overnight |
| ADF | Acid detergent fiber | % of DM | van Soest and Robertson (1985) |
| NDF | Neutral detergent fiber | % of DM | van Soest and Robertson (1985) |
| ADL | Acid detergent lignin | % of DM | van Soest and Robertson (1985) |
| CP | Crude protein | % of DM | Kjeldhal, N × 6.25 |
| IVDMD | In vitro dry matter digestibility | % of DM | Tilley and Terry (1963) |
| ME | Metabolizable energy | Mcal/kg DM | Modified NRC (1996, 2000, 2001) |
| NEm | Net energy for maintenance | Mcal/kg DM | NRC (1996, 2000, 2001) |
| NEg | Net energy for gain | Mcal/kg DM | NRC (1996, 2000, 2001) |
| NEl | Net energy for lactation | Mcal/kg DM | NRC (1996, 2000, 2001) |
| Ca | Calcium | % of DM | AAS (Harris 1970) |
| P | Phosphorus | % of DM | FIA (Harris 1970) |
| Fe | Iron | ppm, DM | AAS (Harris 1970) |
| K | Potassium | % of DM | AAS (Harris 1970) |
| Mg | Magnesium | % of DM | AAS (Harris 1970) |
| Mn | Manganese | ppm, DM | AAS (Harris 1970) |
| Na | Sodium | ppm, DM | AAS (Harris 1970) |
| Zn | Zinc | ppm, DM | AAS (Harris 1970) |