## 3 Results  
Performance of broiler chickens during the entire experiment. In the case of body weight (BW) at day 7 when the chickens were allocated to the groups, no significant differences were found (\(p\) > 0.05). On day 21, the application of 3% of OH (0.56 kg) significantly decreased (\(p\) < 0.01) the BW of broiler chickens in comparison with that in the control group (0.65 kg). The application of SH (0.64 kg) during this period led to results similar to those in the control group (0.65 kg). On day 35, no significant difference was found (\(p\) > 0.05) for oat and SH (in both cases 1.73 kg), but the chickens in the control group (1.77 kg) were significantly heavier (\(p\) < 0.01) than those in the group fed with additional sources of soluble fibre: SBP and WB (1.66 and 1.64 kg, respectively). Between days 7 and 21, the highest feed intake (\(p\) < 0.01) was noted in the chickens fed a diet with 3% of SBP (1.03 kg), and the lowest was noted in the chickens fed with WB (0.94 kg). Between days 21 and 35, the highest feed intake (\(p\) < 0.05) was noted in the case of chickens fed the diets with SH and WB (1.84 and 1.81 kg per bird, respectively), and the lowest was noted in the treatment of broiler chickens fed a diet with OH (1.71 kg). Taking \begin{table}
\begin{tabular}{l c c c c c c c c} \hline \hline \multicolumn{1}{c}{\multirow{2}{*}{**Item**}} & \multicolumn{3}{c}{**Body Weight, kg**} & \multicolumn{3}{c}{**Feed Intake, kg**} & \multicolumn{3}{c}{**FCR, kg/kg**} \\ \cline{2-9}  & **7** & **21** & **35** & **7–21** & **21–35** & **7–35** & **7–21** & **21–35** & **7–35** \\ \hline
**ASC*** & & & & & & & & \\ Control & 0.132 & 0.65 \({}^{\mathrm{A}}\) & 1.77 \({}^{\mathrm{A}}\)a & 0.96 \({}^{\mathrm{b}}\)c & 1.78 \({}^{\mathrm{ab}}\) & 2.75 & 1.87 \({}^{\mathrm{A}}\) & 1.59 \({}^{\mathrm{AB}}\) & 1.68 \({}^{\mathrm{A}}\)a \\ Oat hull & 0.134 & 0.56 \({}^{\mathrm{C}}\) & 1.73 \({}^{\mathrm{a}}\) & 1.01 \({}^{\mathrm{ab}}\) & 1.71 \({}^{\mathrm{b}}\) & 2.78 & 2.35 \({}^{\mathrm{C}}\) & 1.53 \({}^{\mathrm{A}}\) & 1.72 \({}^{\mathrm{A}}\)ab \\ Sunflower hull & 0.132 & 0.64 \({}^{\mathrm{AB}}\) & 1.73 \({}^{\mathrm{a}}\) & 0.99 \({}^{\mathrm{abc}}\) & 1.84 \({}^{\mathrm{a}}\) & 2.80 & 1.95 \({}^{\mathrm{A}}\) & 1.69 \({}^{\mathrm{BC}}\) & 1.75 \({}^{\mathrm{ab}}\) \\ Sugar beet pulp & 0.132 & 0.61 \({}^{\mathrm{B}}\) & 1.66 \({}^{\mathrm{B}}\) & 1.03 \({}^{\mathrm{A}}\)a & 1.77 \({}^{\mathrm{ab}}\) & 2.74 & 2.16 \({}^{\mathrm{B}}\) & 1.69 \({}^{\mathrm{BC}}\) & 1.80 \({}^{\mathrm{bc}}\) \\ Wheat bran & 0.134 & 0.61 \({}^{\mathrm{B}}\) & 1.64 \({}^{\mathrm{BB}}\) & 0.94 \({}^{\mathrm{BC}}\) & 1.81 \({}^{\mathrm{a}}\) & 2.78 & 2.00 \({}^{\mathrm{AB}}\) & 1.77 \({}^{\mathrm{C}}\) & 1.86 \({}^{\mathrm{BC}}\) \\ \hline SEM & 0.001 & 0.007 & 0.017 & 0.012 & 0.021 & 0.022 & 0.042 & 0.025 & 0.023 \\ \(p\)-value & 0.235 & 0.000 & 0.033 & 0.026 & 0.040 & 0.586 & 0.000 & 0.000 & 0.007 \\ \hline \hline \end{tabular}  
* ASC--additional structural component. The letters A, B, and C in superscript describe significant differences between the treatments at \(p\) < 0.01, and a, b, and c denote significant differences at \(p\) < 0.05.  
\end{table} 
Table 3: Performance of broiler chickens during the experiment in days and periods. into consideration the period between days 7 and 35, the intake of feed was not statistically significant (\(p>0.05\)). The lowest FCR (\(p<0.01\)) in the period from 7 to 21 days of life was observed in the case of the control diet and SH treatment (1.87 and 1.95 kg/kg, respectively). In contrast, the highest FCR (\(p<0.01\)) was noted in the chickens fed a diet with 3% OH (2.35 kg/kg). In the period from 21 and 35 days of life, the lowest FCR (\(p<0.01\)) was observed in the treatment of chickens fed a 3% OH diet (1.53 kg/kg) and in the control group (1.59 kg/kg). Moreover, the highest amount of feed per kg of growth (\(p<0.01\)) was observed in the case of chickens fed a diet with 3% WB (1.77 kg/kg).