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Table 4 Effect of growing region on chemical characteristics, physical characteristics and energy values of the 100 corn samples from five provinces

From: Predicting corn digestible and metabolizable energy content from its chemical composition in growing pigs

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
  1. a-d Means followed by the same letter within each row are not significantly different from each other (P > 0.05).