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Table 5 Linear regression summary for relevant gut parameters

From: Dried fruit pomace inclusion in poultry diet: growth performance, intestinal morphology and physiology

ModelRR squaredβP-value
Small intestine weight (Y)0.6410.411 < 0.001
 Apple cellulose diet (β1)  5.863< 0.001
 Blackcurrant cellulose diet (β2)  4.958< 0.001
 Strawberry cellulose diet (β3)  4.3870.001
 Cellulose dose (β4)  1.8710.042
Small intestine viscosity (Y)0.6250.391 < 0.001
 Apple cellulose diet (β1)  0.528< 0.001
 Blackcurrant cellulose diet (β2)  −0.0550.688
 Strawberry cellulose diet (β3)  −0.960.485
 Cellulose dose (β4)  0.0130.894
Small intestine short chain fatty acid (Y)0.6820.465 < 0.001
 Apple cellulose diet (β1)  0.946< 0.001
 Blackcurrant cellulose diet (β2)  0.6570.007
 Strawberry cellulose diet (β3)  1.37< 0.001
 Cellulose dose (β4)  0.1460.380
Small intestine putrefactive short chain fatty acid (Y)0.5590.313 0.002
 Apple cellulose diet (β1)  0.0090.637
 Blackcurrant cellulose diet (β2)  −0.0570.005
 Strawberry cellulose diet (β3)  −0.0520.009
 Cellulose dose (β4)  < 0.0010.978
Small intestine butyric acid (Y)0.7140.51 < 0.001
 Apple cellulose diet (β1)  0.057< 0.001
 Blackcurrant cellulose diet (β2)  0.057< 0.001
 Strawberry cellulose diet (β3)  0.088< 0.001
 Cellulose dose (β4)  0.0020.825
Ceca weight (Y)0.4950.245 0.015
 Apple cellulose diet (β1)  0.490.028
 Blackcurrant cellulose diet (β2)  −0.2940.181
 Strawberry cellulose diet (β3)  − 0.530.806
 Cellulose dose (β4)  0.0400.795
Ceca short chain fatty acid (Y)0.4870.237 0.018
 Apple cellulose diet (β1)  20.723
 Blackcurrant cellulose diet (β2)  19.9390.004
 Strawberry cellulose diet (β3)  13.310.022
 Cellulose dose (β4)  −1.1940.765
Ceca putrefactive short chain fatty acid (Y)0.5080.258 0.011
 Apple cellulose diet (β1)  −0.1570.637
 Blackcurrant cellulose diet (β2)  −0.9630.006
 Strawberry cellulose diet (β3)  0.9380.007
 Cellulose dose (β4)  0.2110.371
Ceca butyric acid (Y)0.6430.414 < 0.001
 Apple cellulose diet (β1)  −0.1290.934
 Blackcurrant cellulose diet (β2)  5.987< 0.001
 Strawberry cellulose diet (β3)  5.865< 0.001
 Cellulose dose (β4)  0.2820.797