## 3 Results
\begin{table}
\begin{tabular}{c c c c c c} \hline  & \multicolumn{2}{c}{**MB**} & \multicolumn{2}{c}{**GS**} \\ \hline
**Genus** & **Mean (\%)** & **std. dev. (\%)** & **Mean (\%)** & **std. dev. (\%)** & \(p\) **Values** \\ \hline _Catenibacterium_ & 1.503 & 2.894 & 0.680 & 0.972 & 0.333 \\ _Erysipelottrix_ & 0.481 & 0.827 & 0.436 & 0.334 & 0.853 \\ _Holdemania_ & 0.100 & 0.293 & 0.139 & 0.128 & 0.667 \\ _Fusobacterium_ & 16.573 & 9.213 & 11.284 & 6.562 & 0.107 \\ _Streptococcus_ & 0.600 & 1.406 & 3.403 & 2.930 & 0.011 \\ _Lactobacillus_ & 0.417 & 0.442 & 8.611 & 7.888 & 0.005 \\ _Aerococcus_ & 0.129 & 0.181 & 0.627 & 0.344 & 0.001 \\ _Enterococcus_ & 0.014 & 0.035 & 0.651 & 0.362 & 0.000 \\ _Megamonas_ & 2.671 & 3.011 & 0.432 & 0.503 & 0.015 \\ _Phascalorcbacterium_ & 1.176 & 1.325 & 1.365 & 1.042 & 0.692 \\ _Selenomonas_ & 1.125 & 0.903 & 0.463 & 0.387 & 0.023 \\ _Aicdaminococcus_ & 0.452 & 0.848 & 0.572 & 0.529 & 0.668 \\ \hline \end{tabular}
\end{table} 
Table 5: _Cont._\(p\) values of alpha diversity used in the study by different indexes in the tested groups at different taxonomic levels are reported in Table 7 and Figure 1. The Index of median values in the two groups is described in Table 8. According to Bray-Curtis beta diversity and Principal Coordinates Analysis (PCoA), the inter-sample variation highlighted a significant separation between the structural composition of the gut microbiota among the study groups (Figures 2 and 3). \begin{table}
\begin{tabular}{c c c c c c} \hline  & \multicolumn{2}{c}{**MB**} & \multicolumn{2}{c}{**GS**} \\ \hline
**Species** & **Mean (\%)** & **std. dev. (\%)** & **Mean (\%)** & **std. dev. (\%)** & \(p\) **Values** \\ \hline _Coprococcus comes_ & 0.509 & 0.845 & 0.219 & 0.624 & 0.332 \\ _Lactobacillus nutrients_ & 0.014 & 0.015 & 5.202 & 5.009 & 0.006 \\ _Lactobacillus neuteri_ & 0.004 & 0.003 & 1.193 & 1.600 & 0.031 \\ _Provetella corri_ & 5.976 & 5.824 & 2.289 & 2.473 & 0.045 \\ _Provetella intermediia_ & 1.434 & 1.868 & 1.018 & 1.008 & 0.483 \\ _Prevetella oris_ & 1.024 & 1.700 & 0.325 & 0.556 & 0.166 \\ _Prevetella ruminicola_ & 0.863 & 1.073 & 0.479 & 0.449 & 0.240 \\ _Prevetella falsenii_ & 0.658 & 0.888 & 0.457 & 0.473 & 0.474 \\ _Prevetella nigrescens_ & 0.599 & 0.811 & 1.281 & 2.520 & 0.404 \\ _Faecalibacterium transutzii_ & 3.290 & 3.013 & 2.432 & 2.158 & 0.415 \\ _Rumitococcus guavrits_ & 2.838 & 3.070 & 0.955 & 0.322 & 0.038 \\ _Rumitococcus sp. 5\_1\_39 BFAA_ & 0.885 & 1.151 & 0.835 & 0.282 & 0.878 \\ _Rumitococcus obeum_ & 0.815 & 0.997 & 0.649 & 0.309 & 0.565 \\ _Rumitococcus torques_ & 0.542 & 0.663 & 0.566 & 0.163 & 0.897 \\ _Rumitococcus gaurreauii_ & 0.254 & 0.148 & 0.687 & 0.252 & 0.000 \\ _Streptococcus agalactiae_ & 0.247 & 0.633 & 1.630 & 2.194 & 0.065 \\ _Blautia_ sp. Ser8 & 6.484 & 3.417 & 5.052 & 2.480 & 0.236 \\ _butyrate-producing bacterium SM4/1_ & 1.262 & 1.041 & 1.201 & 0.538 & 0.852 \\ _Megamous hypernergale_ & 2.671 & 3.011 & 0.432 & 0.503 & 0.015 \\ _Selenomonas runinanttium_ & 0.957 & 0.804 & 0.449 & 0.391 & 0.050 \\ \hline \end{tabular}
\end{table} 
Table 6: _Cont._  
Figure 1: _Cont._  
Figure 1: \(p\) values alpha diversity calculated by different indexes in the tested groups. GS = German Shepherd, MB = mixed breeds.