## 3 Results and Discussion
### Volatile Compounds  
A total of 66 volatile compounds with different chemical compositions in meat from the Mallorquina and Roja Mallorquina breeds were identified. Table 4 shows the most abundant volatiles identified, classified into nine chemical families. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline  & EM & RI & LRI & ML & MP & MC & RC & SEM & \(p\)**-Values** \\  & & & & **(\(\mathbf{n=20}\))** & **(\(\mathbf{n=20}\))** & **(\(\mathbf{n=20}\))** & **(\(\mathbf{n=20}\))** & **(\(\mathbf{n=20}\))** & **SEM** & \(p\)**-Values** \\ \hline _Aliphatic aldehydes_ & & & & & & & & & \\
3-Methylbutanal & + & + & 923 & 7.30 \({}^{\rm ab}\) & 9.43 \({}^{\rm b}\) & 4.20 \({}^{\rm b}\) & 17.81 \({}^{\rm a}\) & 0.256 & 0.005 \\ Pentanal & + & + & 985 & 2.04 & 2.47 & 2.42 & 2.84 & 0.135 & 0.205 \\ Hexanal & + & + & 1.088 & 46.82 \({}^{\rm ab}\) & 53.44 \({}^{\rm a}\) & 60.98 \({}^{\rm a}\) & 37.01 \({}^{\rm b}\) & 2.625 & 0.006 \\ Heptanal & + & + & 1.193 & 3.97 & 3.76 & 3.42 & 3.40 & 0.174 & 0.560 \\ Octanal & + & + & 1.297 & 1.80 \({}^{\rm a}\) & 1.37 \({}^{\rm b}\) & 1.60 \({}^{\rm a}\) & 1.26 \({}^{\rm b}\) & 0.078 & 0.053 \\ Nonanal & + & + & 1.403 & 6.31 \({}^{\rm a}\) & 4.04 \({}^{\rm b}\) & 4.34 \({}^{\rm b}\) & 3.99 \({}^{\rm b}\) & 0.008 \({}^{\rm c}\)\(\geq\)0.001 \\ Octanal & + & + & 1441 & 0.09 \({}^{\rm a}\) & 0.08 \({}^{\rm a}\) & 0.07 \({}^{\rm a}\) & 0.04 \({}^{\rm b}\) & 0.005 & 0.004 \\ Decanal & + & + & 1508 & 0.11 \({}^{\rm b}\) & 0.10 \({}^{\rm b}\) & 0.08 \({}^{\rm b}\) & 0.20 \({}^{\rm a}\) & 0.015 & 0.025 \\ (Z)-2-monenal & + & + & 1549 & 0.14 \({}^{\rm a}\) & 0.01 \({}^{\rm a}\) & 0.08 \({}^{\rm b}\) & 0.16 \({}^{\rm a}\) & 0.010 & 0.025 \\ _2_(Z)/4_(Z)-undecanial & + & & 1781 & 0.22 & 0.17 & 0.14 & 0.25 & 0.022 & 0.314 \\ _Aliphatic ketones_ & & & & & & & & \\ \hline
2-Butanone & + & + & 906 & 0.57 \({}^{\rm b}\) & 0.45 \({}^{\rm b}\) & 0.46 \({}^{\rm b}\) & 1.18 \({}^{\rm a}\) & 0.101 & 0.021 \\
2-Septanedence & + & & 704 & 1.16 & 0.86 & 1.0 & 1.79 & 0.109 & 0.136 \\
2-Heptanone & + & + & 1.190 & 0.35 & 0.59 & 0.43 \({}^{\rm b}\) & 0.48 & 0.071 & 0.701 \\
2-Octanone & + & + & 1.292 & 0.07 \({}^{\rm ab}\) & 0.09 \({}^{\rm b}\) & 0.03 \({}^{\rm b}\) & 0.11 \({}^{\rm a}\) & 0.147 & 0.020 \\
3-Hydroxy-2-butanone & + & + & 1.301 & 2.05 \({}^{\rm a}\) & 0.40 \({}^{\rm b}\) & 1.24 \({}^{\rm b}\) & 1.30 \({}^{\rm b}\) & 0.179 & 0.021 \\
3-Octen-3 one & + & + & 1310 & 0.15 & 0.13 & 0.12 & 0.10 & 0.008 & 0.146 \\
2-Hydroxy-2-propanone & + & + & 1.320 & 0.21 \({}^{\rm a}\) & 0.17 \({}^{\rm a}\) & 0.11 \({}^{\rm b}\) & 0.27 \({}^{\rm a}\) & 0.022 & 0.057 \\
2-3-Octanedione & + & + & 1.333 & 2.75 \({}^{\rm a}\) & 2.43 \({}^{\rm a}\) & 2.57 \({}^{\rm a}\) & 0.72 \({}^{\rm b}\) & 0.071 & \(\geq\)0.001 \\
2-Nonanone & + & + & 1.397 & 0.07 \({}^{\rm a}\) & 0.09 \({}^{\rm b}\) & 0.05 \({}^{\rm b}\) & 0.30 \({}^{\rm a}\) & 0.229 & 0.040 \\
2-Pyonance & + & & 1.479 & 0.09 & 0.08 & 0.06 \({}^{\rm b}\) & 0.10 \({}^{\rm a}\) & 0.010 & 0.505 \\
2-Decanone & + & + & 1.504 & 0.03 \({}^{\rm b}\) & 0.05 \({}^{\rm a}\) & 0.03 \({}^{\rm b}\) & 0.11 \({}^{\rm a}\) & 0.258 & 0.025 \\
2-Undecanone & + & + & 1.626 & 0.01 & 0.02 & 0.01 & 0.01 & 0.002 & 0.332 \\ Buylrolactone & + & + & 1.657 & 0.93 & 0.49 & 0.59 & 1.08 & 0.111 & 0.198 \\ _Aromatic hydrocarbons_ & & & & & & & & & \\ \hline \end{tabular}
\end{table} 
Table 4: Volatile compounds species identified (expressed in %) in intramuscular fat from Malleroyina lambs sucoking (ML), grazing (MP), supplemented with grain (MC) and Roja Mallorquina lambs supplemented with grain (RC).