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Table 5 Correlation coefficients between chemical characteristics, physical characteristics and energy values of the 100 corn samples

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

Item DE ME Crude protein Ether extract ADF NDF Ash Gross energy Starch Bulk weight 1,000 kernel weight
DE 1.00           
ME 0.95** 1.00          
Crude protein −0.15 −0.06 1.00         
Ether extract 0.44** 0.29** −0.28 1.00        
ADF −0.05 −0.06 −0.05 0.33 1.00       
NDF −0.32** −0.27** 0.14 −0.02 0.68 1.00      
Ash −0.29* −0.28** 0.22 −0.27 −0.11 0.17 1.00     
Gross energy 0.25** 0.23 −0.06 0.14 −0.28 0.19 0.07 1.00    
Starch 0.38** 0.32* −0.03 0.03 0.13 0.11 −0.12 0.06 1.00   
Bulk weight 0.05 0.03 0.03 0.15 −0.16 0.13 0.22 0.05 −0.13 1.00  
1,000 kernel weight 0.11 0.06 0.25 0.02 −0.06 −0.13 0.08 0.14 −0.11 0.42 1.00
  1. *, **, P < 0.05, P < 0.01, respectively.