## 3 Results and Discussion
### Method Validation
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Feed**} & \multicolumn{2}{c}{**Added Concentration (\(\mu\)g/g)**} & \multirow{2}{*}{**Recovery Rate (\%)**} & \multicolumn{2}{c}{**Intra Batch Coefficient of Variation (\%)**} & \multicolumn{1}{c}{**Inter Batch**} \\ \cline{3-5}  & & 0.05 & 92.72 & 5.48 & 6.68 \\ \cline{2-5}  & & 0.5 & 92.99 & 9.12 & 10.62 \\ \cline{2-5}  & & 5.0 & 95.58 & 7.06 & 8.37 \\ \hline \multirow{4}{*}{Concentrated chicken feed} & 0.1 & 94.09 & 5.55 & 6.90 \\ \cline{2-5}  & 1.0 & 95.51 & 8.17 & 9.54 \\ \cline{2-5}  & 10.0 & 97.76 & 5.92 & 6.95 \\ \hline \multirow{4}{*}{Chicken premix feed} & 0.5 & 93.82 & 6.34 & 8.49 \\ \cline{2-5}  & 5.0 & 97.89 & 7.11 & 8.82 \\ \cline{2-5}  & 50.0 & 98.80 & 4.65 & 5.79 \\ \hline \multirow{4}{*}{Pig compound feed} & 0.05 & 88.48 & 5.85 & 7.37 \\ \cline{2-5}  & 0.5 & 85.72 & 5.90 & 7.80 \\ \cline{2-5}  & 5.0 & 87.97 & 5.36 & 7.72 \\ \hline \multirow{4}{*}{Concentrated pig feed} & 0.1 & 84.79 & 11.32 & 10.09 \\ \cline{2-5}  & 1.0 & 85.65 & 5.76 & 6.66 \\ \cline{2-5}  & 10.0 & 90.29 & 6.80 & 7.82 \\ \hline \multirow{4}{*}{Pig premix feed} & 0.5 & 97.02 & 11.27 & 12.52 \\ \cline{2-5}  & 5.0 & 97.77 & 8.03 & 10.00 \\ \cline{2-5}  & 50.0 & 96.64 & 6.22 & 8.43 \\ \hline \multirow{4}{*}{Vitamin supplements} & 0.05 & 92.70 & 5.72 & 6.07 \\ \cline{2-5}  & 0.5 & 90.84 & 7.94 & 8.86 \\ \cline{2-5}  & 5.0 & 90.56 & 5.59 & 7.54 \\ \hline \multirow{4}{*}{Cattle concentrate} & 0.1 & 89.63 & 8.06 & 7.98 \\ \cline{2-5}  & 1.0 & 88.45 & 10.47 & 11.36 \\ \cline{2-5}  & 10.0 & 83.74 & 10.12 & 13.38 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Recovery rate and coefficient of variation in milbemycin added to feed. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Feed**} & \multirow{2}{*}{\begin{tabular}{c} **Added** \\ **Concentration** \\ **(\#g/g)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Recovery Rate** \\ **(\%)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Intra Batch** \\ **Coefficient of** \\ **Variation (\%)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Inter Batch** \\ **Coefficient of** \\ **Variation (\%)** \\ \end{tabular} } \\ \cline{2-4}  & 0.05 & 84.52 & 3.76 & 4.76 \\ \cline{2-4} compound & 0.5 & 80.67 & 4.87 & 5.59 \\ \cline{2-4} feed & 5.0 & 83.99 & 5.98 & 6.80 \\ \hline \multirow{2}{*}{\begin{tabular}{c} Concentrated \\ chicken feed \\ \end{tabular} } & 0.1 & 87.75 & 9.18 & 10.03 \\ \cline{2-4}  & 1.0 & 85.08 & 3.75 & 5.59 \\ \cline{2-4}  & 10.0 & 91.22 & 7.72 & 8.11 \\ \hline \multirow{2}{*}{\begin{tabular}{c} Chicken \\ premix feed \\ \end{tabular} } & 0.5 & 86.64 & 7.67 & 8.76 \\ \cline{2-4}  & 5.0 & 90.90 & 6.08 & 7.95 \\ \cline{2-4}  & 50.0 & 95.57 & 9.92 & 11.04 \\ \hline \multirow{2}{*}{\begin{tabular}{c} Pig compound \\ feed \\ \end{tabular} } & 0.05 & 85.70 & 7.67 & 8.88 \\ \cline{2-4}  & 0.5 & 84.49 & 7.76 & 8.92 \\ \cline{2-4}  & 5.0 & 86.19 & 5.61 & 6.64 \\ \hline \multirow{2}{*}{\begin{tabular}{c} Concentrated \\ pig feed \\ \end{tabular} } & 0.1 & 85.53 & 10.85 & 11.09 \\ \cline{2-4}  & 1.0 & 84.74 & 6.76 & 7.80 \\ \cline{2-4}  & 10.0 & 85.07 & 6.70 & 7.92 \\ \hline \multirow{2}{*}{\begin{tabular}{c} Pig premix \\ feed \\ \end{tabular} } & 0.5 & 91.82 & 11.55 & 10.61 \\ \cline{2-4}  & 5.0 & 94.76 & 9.13 & 10.07 \\ \cline{2-4}  & 50.0 & 93.80 & 6.60 & 7.53 \\ \hline \multirow{2}{*}{\
\begin{tabular}{c} Vitamin \\ supplements \\ \end{tabular} } & 0.05 & 88.56 & 7.34 & 8.57 \\ \cline{2-4}  & 0.5 & 87.79 & 7.89 & 8.86 \\ \cline{2-4}  & 5.0 & 87.47 & 5.63 & 7.90 \\ \hline \multirow{2}{*}{
\begin{tabular}{c} Cattle \\ concentrate \\ \end{tabular} } & 0.1 & 82.80 & 8.22 & 9.49 \\ \cline{2-4}  & 1.0 & 81.90 & 12.84 & 13.69 \\ \cline{2-4}  & 10.0 & 80.93 & 11.48 & 12.25 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Recovery rate and coefficient of variation in mooxifloxacin in feed.