Table 2.
Item | Diets1 |
||
---|---|---|---|
C20 | C40 | C60 | |
Dry matter intake (DMI), kg/d | 4.65 ± 0.275 | 4.66 ± 0.296 | 4.93 ± 0.324 |
DMI per kg metabolic body weight, g/kg W0.75 | 94.4 ± 1.73 | 93 ± 2.023 | 96.4 ± 2.563 |
Crude protein intake, kg/d | 0.37 ± 0.024a | 0.53 ± 0.035b | 0.70 ± 0.052c |
Digestible crude protein intake, kg/d | 0.21 ± 0.012a | 0.33 ± 0.029b | 0.47 ± 0.037c |
Total digestible nutrient intake, kg/d | 2.51 ± 0.146a | 2.92 ± 0.181ab | 3.47 ± 0.231b |
Average daily gain, kg/d | 0.47 ± 0.023a | 0.53 ± 0.035ab | 0.63 ± 0.053b |
Feed conversion efficiency, g gain/kg DMI | 101 ± 5.714a | 114 ± 6.962a | 128 ± 2.308b |
Nutrient digestibility, % | |||
Dry matter | 58.3 ± 0.593a | 62.2 ± 0.824b | 66.3 ± 1.165c |
Organic matter | 63.4 ± 0.572a | 65.9 ± 1.053ab | 68.2 ± 1.081b |
Crude protein | 67.9 ± 0.750a | 72.6 ± 2.347b | 73.5 ± 1.481b |
Ether extract | 68.5 ± 1.061 | 70.0 ± 1.023 | 72.2 ± 0.155 |
Neutral detergent fiber | 50.3 ± 1.346 | 46.8 ± 1.142 | 44.7 ± 2.052 |
Acid detergent fiber | 49.8 ± 1.192b | 46.0 ± 0.580a | 41.7 ± 1.541a |
a, b, c Means bearing different superscripts in the same row differ significantly (P < 0.05); number of animals sampled in each group (n = 5).
C20, 20:60:20 maize:wheat straw:concentrate; C40, 20:40:40 maize:wheat straw:concentrate; C60, 10:30:60 maize:wheat straw:concentrate.