Table 4.
Main effect | Tip width | Crypt depth | Muscularis thickness | Surface area | Ileal adherent mucin thickness layer | |
---|---|---|---|---|---|---|
Micron | Micrond | μg/g tissue | ||||
DDGS level (%) | ||||||
6 | 275a | 166 | 251b | 684,224a | 679b | |
18 | 233b | 169 | 294a | 606,656b | 705a | |
Feed supplements | ||||||
Negative control (NC) | 264 | 176a | 285 | 670,514 | 740a | |
~2% Supplemental fat (suppl. fat) | 267 | 180a | 274 | 639,138 | 770a | |
XAP | 240 | 157c | 266 | 618,222 | 589b | |
XAP + DFM | 246 | 159c | 264 | 653,887 | 670a,b | |
Interactions | ||||||
DDGS level (%) | Feed supplement | |||||
6 | NC | 296 | 177 | 268 | 735,289 | 737 |
6 | Suppl. fat | 295 | 185 | 255 | 660,544 | 726 |
6 | XAP | 252 | 145 | 244 | 630,957 | 576 |
6 | XAP + DFM | 260 | 157 | 238 | 710,104 | 679 |
18 | NC | 232 | 176 | 303 | 605,737 | 744 |
18 | Suppl. fat | 239 | 174 | 293 | 617,733 | 814 |
18 | XAP | 228 | 167 | 288 | 605,486 | 603 |
18 | XAP + DFM | 233 | 161 | 291 | 597,670 | 661 |
Source of variations | ||||||
P-values | ||||||
DDGS | 0.002 | 0.614 | <0.01 | 0.037 | 0.045 | |
Feed supplement | 0.373 | 0.037 | 0.334 | 0.740 | 0.032 | |
DDGS × feed supplement | 0.576 | 0.423 | 0.885 | 0.664 | 0.871 | |
SEM(40)d | 12 | 6.519 | 13 | 34,110 | 46 |
a,bMeans with different letter superscripts within a column are significantly different (P < 0.05).
cValues are means of six replicates per treatment.
dSEM(40), standard error of the mean with 40 degrees of freedom.