Table 3. Effects of dietary crude protein content on intake and growth performance of Hanwoo finishers
Item | Diet1) | SEM | Gender | SEM | p-value |
Control | HCP | Cow | Heifer | Steer | Diet | Gender | Interaction |
BW (kg) | | | | | | | | | | |
Initial BW | 628.5 | 616.4 | 14.89 | 662.9a | 555.2b | 649.3a | 21.9 | 0.57 | < 0.01 | 0.64 |
Final BW | 679.7 | 669.6 | 15.50 | 701.4a | 622.5b | 700.0a | 22.8 | 0.65 | 0.02 | 0.85 |
ADG (g/d) | 538.5 | 558.5 | 50.65 | 406.2b | 705.3a | 534.0ab | 89.3 | 0.78 | 0.02 | 0.41 |
DMI (kg/d) | 9.1 | 8.5 | 0.28 | 8.9a | 10.1a | 7.4b | 0.5 | 0.17 | < 0.01 | 0.47 |
CPI (kg/d) | 1.4 | 1.5 | 0.05 | 1.5a | 1.7a | 1.2b | 0.11 | 0.38 | < 0.01 | 0.50 |
MEI (Mcal/d) | 2.3 | 2.3 | 0.09 | 2.4 | 2.5 | 2.0 | 0.16 | 0.70 | 0.01 | 0.40 |
FCR | 1.8 | 1.9 | 0.29 | 2.6 | 1.5 | 1.6 | 0.5 | 0.87 | 0.04 | 0.70 |
Control, containing 156 g/kg DM of CP; HCP, high level of crude protein, containing 173 g/kg DM of CP.
Means that do not significantly differ with common superscripts within treatments (p < 0.05).
BW, body weight; ADG, average daily gain; DMI, dry matter intake; CPI, crude protein intake; MEI, metabolizable energy intake; FCR, feed conversion ratio.