Table 6 Linear relationships between corn gluten feed (CGF) inclusion and ileal and total tract digestibility coefficients

Apparent ileal digestibility

Dry matter

DM = 86.77 (±1.02) – 0.028 (±0.008) gCGF¹

r² = 0.86

Energy

E = 88.22 (±0.96) – 0.025 (±0.008) gCGF

r² = 0.92

Phenylalanine

Phe = 93.31 (±0.46) – 0.011 (±0.004) gCGF

r² = 0.84

Cystine

Cys = 87.15 (±1.90) – 0.048 (±0.016) gCGF

r² = 0.92

Proline

Pro = 89.36 (±1.89) – 0.045 (±0.016) gCGF

r² = 0.78

Standardized ileal digestibility

Phenylalanine

Phe = 98.13 (±0.51) – 0.015 (±0.004) gCGF

r² = 0.78

Cystine

Cys = 92.19 (±1.88) – 0.043 (±0.015) gCGF

r² = 0.94

Proline

Pro = 103.20 (±1.84) – 0.047 (±0.015) gCGF

r² = 0.93

Apparent total tract digestibility

Dry matter

DM = 86.52 (±1.16) – 0.027 (±0.010) gCGF

r² = 0.47

Protein

CP = 83.85 (±1.74) – 0.020 (±0.014) gCGF

r² = 0.14

Energy

E = 86.64 (±1.20) – 0.027 (±0.010) gCGF

r² = 0.46

NDF

NDF = 58.13 (±2.97) – 0.041 (±0.015) gCGF

r² = 0.29