Item | Diet form | Meal | Pellet | SEMb | Contrast P-value | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Corn particle size, μm | 700 | 500 | 300 | 700 | 500 | 300 | Diet form | Particle sizec | Interaction | ||
N balance | |||||||||||
N intake, g/d | 56 | 52 | 55 | 54 | 53 | 54 | 3.73 | 0.618 | 0.931 | 0.313 | |
N in feces, % | 3.40 | 3.51 | 3.39 | 3.32 | 3.28 | 3.21 | 0.13 | 0.093 | 0.606 | 0.267 | |
N excretion in feces, g/d | 9.29 | 7.91 | 7.93 | 7.49 | 6.63 | 6.89 | 0.55 | 0.001 | 0.043 | 0.005 | |
Absorbed N, g/d | 46.38 | 44.32 | 47.24 | 46.09 | 46.77 | 47.44 | 3.45 | 0.516 | 0.459 | 0.977 | |
ATTD of N, % | 83.19 | 84.56 | 85.49 | 85.63 | 87.56 | 87.25 | 0.97 | 0.002 | 0.031 | 0.021 | |
N in urine, % | 0.19 | 0.24 | 0.16 | 0.24 | 0.22 | 0.21 | 0.05 | 0.163 | 0.203 | 0.029 | |
N excretion in urine, g/d | 12.53 | 15.97 | 11.55 | 12.00 | 12.15 | 13.21 | 3.54 | 0.526 | 0.944 | 0.743 | |
N retention, g/d | 33.85 | 28.35 | 35.68 | 34.09 | 34.63 | 34.22 | 2.50 | 0.414 | 0.697 | 0.809 | |
N retention, % intake | 61.81 | 56.42 | 65.50 | 64.79 | 65.86 | 64.47 | 5.48 | 0.181 | 0.620 | 0.775 | |
N retention, % absorbed | 74.48 | 66.80 | 76.55 | 75.92 | 75.30 | 73.98 | 6.72 | 0.421 | 0.985 | 0.879 | |
TDF digestibility | |||||||||||
TDF intake, g/d | 296 | 238 | 276 | 280 | 253 | 273 | 18.62 | 0.771 | 0.065 | 0.188 | |
TDF in feces, % | 40.07 | 39.30 | 42.75 | 45.17 | 42.10 | 45.65 | 1.72 | 0.007 | 0.306 | 0.014 | |
TDF excretion in feces, g/d | 110 | 91 | 100 | 102 | 86 | 99 | 9.20 | 0.398 | 0.314 | 0.503 | |
Absorbed TDF, g/d | 186 | 148 | 175 | 177 | 167 | 174 | 14.28 | 0.706 | 0.479 | 0.601 | |
ATTD of TDF, % | 62.71 | 61.85 | 63.48 | 63.07 | 66.30 | 63.75 | 2.52 | 0.395 | 0.765 | 0.896 | |
AEE digestibility | |||||||||||
AEE intake, g/d | 122 | 116 | 125 | 135 | 134 | 133 | 8.89 | < 0.001 | 0.940 | 0.006 | |
AEE in feces, % | 14.53 | 16.13 | 12.09 | 9.86 | 10.92 | 9.20 | 0.63 | < 0.001 | 0.019 | < 0.001 | |
AEE excretion in feces, g/d | 40 | 36 | 28 | 22 | 22 | 20 | 2.43 | < 0.001 | 0.002 | < 0.001 | |
Absorbed AEE, g/d | 82 | 80 | 97 | 113 | 112 | 113 | 7.49 | < 0.001 | 0.053 | < 0.001 | |
ATTD of AEE, % | 67.12 | 68.53 | 77.13 | 83.33 | 83.60 | 84.97 | 1.45 | < 0.001 | < 0.001 | < 0.001 |