## 3 Results
### Correlation Between Dietary Fibre Types and Measurements of Intestines and Organs
\begin{table}
\begin{tabular}{l c c c c c} \hline  & **Item** & **Duodenum** & **Jejunum** & **Ileum** & **Ceca (Mean)** & **Large intestine** &
\begin{tabular}{c} **Total Length of** \\ **Intestines** \\ \end{tabular} \\ \hline \hline
**ASC*** & & & & & & & \\ Control & 28.0 \({}^{\text{a}}\) & 76.0 & 77.6 \({}^{\text{A}}\) & 19.0 & 9.7 \({}^{\text{A}}\) & 210.3 \({}^{\text{a}}\) \\ Out hull & 25.6 \({}^{\text{b}}\) & 77.2 & 77.3 \({}^{\text{A}}\) & 18.0 & 9.7 \({}^{\text{A}}\) & 207.8 \({}^{\text{a}}\) \\ Sunflower hull & 28.3 \({}^{\text{A}}\) & 73.7 & 70.3 \({}^{\text{B}}\) & 17.5 & 8.9 \({}^{\text{AB}}\) & 198.7 \({}^{\text{ab}}\) \\ Dry sugar beet pulp & 26.5 \({}^{\text{ab}}\) & 71.7 & 70.2 \({}^{\text{B}}\) & 16.7 & 8.2 \({}^{\text{B}}\) & 193.3 \({}^{\text{bb}}\) \\ Wheat bran & 27.6 \({}^{\text{a}}\) & 75.3 & 72.9 \({}^{\text{AB}}\) & 17.7 & 8.8 \({}^{\text{AB}}\) & 202.4 \({}^{\text{ab}}\) \\ \hline SEM & 0.318 & 0.682 & 0.908 & 0.257 & 0.155 & 1.729 \\ \(p\)-value & 0.027 & 0.090 & 0.022 & 0.475 & 0.010 & 0.007 \\ \hline \end{tabular}  
* ASC—additional structural component. The letters A, B, and C in superscript describe the significant differences between the treatments at \(p\) < 0.01, and a, b, and c denote significant differences at \(p\) < 0.05.  
\end{table} 
Table 5: Length of determined segments of intestines (cm) at day 35.  
weak positive correlation was also determined between IDF content and liver weight (r = 0.36). The weight of the muscular stomach was positively weakly correlated with the SDF level (r = 0.43) and negatively weakly correlated with the IDF level (r = \(-\)0.47). No significant correlations were found between the weight of the glandular stomach and the measurements of the remaining intestinal sections and organ weights (\(p>\) 0.05). The weight of the muscular stomach was moderately positively correlated with the amount of IDF in the diet (r = 0.69), and no significant correlations were found for the remaining variables (\(p>\) 0.05). In addition, no correlation was found for the length of the duodenum and the remaining variables (\(p>\) 0.05). In the case of jejunum length, a moderate positive correlation was found in relation to the level of IDF in the diet (r = 0.51). The increase in the length of this section of the digestive tract was also moderately positively correlated with the increase in the remaining sections of the intestines, with the r coefficient in the range from 0.50 to 0.56. The liver weight was also positively correlated to a similar extent (r = 0.56). In the case of the ileum, moderate positive correlations were found with respect to IDF (positive, r = 0.57) and SDF (negative, r = \(-\)0.56). The length of the ileum was also moderately positively correlated with the length of the jejunum (r = 0.66) and weakly with the lengths of the cecum (r = 0.52) and large intestine (r = 0.47). In addition, the length of this section was weakly positively correlated with the weights of the heart and liver (r = 0.49 and r = 0.52, respectively). The length of the cecum was positively and weakly correlated with the amount of IDF in the feed (r = 0.46), and a weak correlation was also indicated for this variable and the lengths of the jejunum and ileum (r = 0.51 and r = 0.52, respectively). A similar level of correlation (r = 0.55) was observed between the length of the cecum and the weight of the liver. The length of the large intestine was weakly positively correlated with the amount of IDF (r = 0.45), weakly negatively with the amount of SDF (r = \(-\)0.51) in the diet of broiler chickens, and weakly positively with the lengths of the small intestine components (r = 0.50 and r = 0.47, respectively). In the case of heart weight, only a weak positive correlation (r = 0.49) was found with the length of the ileum. Liver weight showed a weak positive correlation with dietary IDF (r = 0.36) and heart weight (r = 0.35). Liver weight was also weakly correlated with the jejunum, ileum, and cecum lengths, with r ranging from 0.52 to 0.56.