Table 8.
Effect of inclusion level on digestibility of nutrient and energy values of wheat bran.
Diets1 |
SEM |
P-values |
|||||||
---|---|---|---|---|---|---|---|---|---|
Item | WB10 | WB20 | WB30 | WB40 | WB50 | Diet | Linear | Quadratic | |
No. of observations | 6 | 6 | 6 | 6 | 6 | ||||
Digestibility coefficients, % | |||||||||
CP | 77.0 | 72.2 | 73.7 | 74.4 | 73.9 | 2.05 | NS | NS | NS |
DM | 61.0 | 67.7 | 68.6 | 69.3 | 68.1 | 2.53 | NS | NS | <0.05 |
GE | 63.4 | 68.4 | 70.3 | 68.7 | 69.0 | 2.08 | NS | NS | NS |
NDF | 60.5ab | 49.0b | 72.1a | 58.6ab | 50.2b | 2.84 | <0.01 | NS | NS |
ADF | 34.0ab | 28.5b | 39.9ab | 44.5a | 34.9ab | 3.06 | 0.02 | NS | NS |
Energy, MJ/kg DM | |||||||||
DE | 12.09 | 13.04 | 13.39 | 13.09 | 13.15 | 0.381 | NS | NS | NS |
ME | 11.93 | 12.63 | 12.80 | 12.79 | 12.80 | 0.529 | NS | NS | 0.05 |
NE | 8.05 | 9.35 | 10.38 | 10.40 | 9.77 | 0.522 | NS | NS | <0.001 |
Energy utilization, % | |||||||||
ME:DE ratio | 98.7 | 96.9 | 95.7 | 97.7 | 97.4 | 2.94 | NS | NS | NS |
NE:ME ratio | 67.4 | 74.0 | 81.0 | 81.3 | 76.3 | 4.14 | NS | NS | 0.03 |
CP = crude protein; DM = dry matter; GE = gross energy; NDF = neutral detergent fiber; ADF = acid detergent fiber; DE = digestible energy; ME = metabolizable energy; NE = net energy.
a-d Means within a row without a common superscript differ significantly (P < 0.05). Values were means of six observations per treatment. The P-values more than 0.10 were presented with “NS”.
WB10, diet including 9.8% wheat bran; WB20, diet including 19.5% wheat bran; WB30, diet including 29.2% wheat bran; WB40, diet including 39.0% wheat bran; WB50, diet including 48.7% wheat bran.