Item | Liaoning | Jilin | Hebei | Henan | Shandong | SEM | P-value |
---|---|---|---|---|---|---|---|
Chemical composition, % of DM | |||||||
Dry matter | 87.57b | 88.15a | 86.82c | 86.49d | 88.20a | 0.47 | 0.01 |
Crude protein | 9.87a | 9.78a | 9.38b | 9.61ab | 9.82a | 0.47 | 0.01 |
Ether extract | 3.54b | 3.38b | 4.05a | 3.71b | 3.56b | 0.05 | 0.01 |
ADF | 2.28b | 2.22b | 2.46a | 2.29b | 2.25b | 0.22 | 0.01 |
NDF | 10.95bc | 10.73c | 10.76c | 11.76a | 11.46ab | 0.86 | 0.01 |
Ash | 1.61 | 1.62 | 1.58 | 1.60 | 1.63 | 0.10 | 0.55 |
Starch | 70.58c | 73.20b | 72.97b | 75.32a | 71.79bc | 2.97 | 0.01 |
Physical characteristic | |||||||
Bulk weight, g/L | 693.29 | 689.94 | 699.21 | 707.94 | 703.04 | 25.60 | 0.18 |
1,000 kernel weight, g | 354.69a | 363.60a | 302.19b | 299.70b | 307.38b | 30.92 | 0.01 |
Energy concentration, kcal/kg of DM | |||||||
Gross energy | 4448.16b | 4436.57b | 4435.73b | 4476.82a | 4436.69b | 18.23 | 0.01 |
Digestible energy | 4032.85b | 4035.85b | 4093.45a | 4106.23a | 3996.61c | 45.20 | 0.01 |
Metabolisable energy | 3906.83b | 3903.14b | 3970.06a | 3968.63a | 3868.94c | 40.61 | 0.01 |