Table 5.
Water footprint (volume of water received per unit of each component output1) of teff grass during the 63-d grazing periods as affected by beef steers supplement type
| Supplement type2 | ||||
|---|---|---|---|---|
| Item3 | Control | DDGS | SEM | P-value |
| DM, m3/kg | 0.09 | 0.12 | 0.03 | 0.14 |
| OM, m3/kg | 0.09 | 0.12 | 0.02 | 0.19 |
| NDF, m3/kg | 0.13 | 0.18 | 0.03 | 0.17 |
| ADF, m3/kg | 0.29 | 0.39 | 0.07 | 0.19 |
| CP, m3/kg | 0.68 | 0.89 | 0.12 | 0.16 |
| Digestible DM, m3/kg | 0.12 | 0.17 | 0.03 | 0.18 |
| Digestible OM, m3/kg | 0.13 | 0.17 | 0.03 | 0.23 |
| NEm, m3/Mcal | 0.07 | 0.10 | 0.02 | 0.15 |
| NEg, m3/Mcal | 0.12 | 0.19 | 0.04 | 0.12 |
| AUD/ha | 93.39 | 94.21 | 5.51 | 0.67 |
| m3/AUD-ha | 1.85 | 2.28 | 1.26 | 0.32 |
1Calculated as nutrient composition multiplied by the predicted steer DMI during the entire grazing period plus nutrient concentration at final sampling (d 56); Estimates of NEm and NEg were derived from estimated steer DMI.
2Control: cottonseed meal, 0.45 kg DM/animal-daily; DDGS: dried distillers grains plus solubles, 0.50% mean paddock BW/animal-daily.
3DM: dry matter; OM: organic matter; NDF: neutral detergent fiber; ADF: acid detergent fiber; CP: crude protein; NEm: net energy for maintenance; NEg: net energy for maintenance; AUD: animal unit days.