## 3 Results
### Nutritional Value and Compliance with the Label
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & **Item 1** & **Moisture g/100 g** & **CP** & **EE** & **CF** & **CA** & **NFE** & **ME** \\ \hline
1 & A & GI & 76.35 j & 47.74 h & 27.69 f & 3.392 gh & 12.043 j & 16.792 e & 415.5 a \\
2 & A & GI & 73.54 j & 48.30 h & 25.77 d & 3.712 h & 10.266 h & 17.139 e & 422.7 b \\
3 & A & GI & 70.59 ghi & 35.63 d & 35.36 o & 2.269 de & 13.052 k & 17.569 ef & 468.4 i \\
4 & A & GI & 69.60 fgh & 45.15 g & 32.531 & 2.044 de & 8.291 f & 20.132 g & 453.5 def \\
5 & A & GI & 46.05 a & 30.78 a & 27.04 e & 1.040 a & 6.462 d & 38.721 k & 461.6 gh \\
6 & A & GF & 64.88 de & 40.97 f & 43.46 q & 3.474 gh & 8.021 f & 9.992 d & 498.01 \\
7 & A & GF & 53.26 bc & 44.30 g & 27.01 e & 1.205 ab & 5.851 c & 27.693 i & 456.1 fg \\
8 & A & GF & 56.07 c & 50.61 i & 22.50 b & 1.055 a & 7.032 e & 22.296 h & 449.7 de \\
9 & A & GF & 66.37 def & 74.71 n & 18.18 a & 2.209 de & 3.830 a & 4.594 b & 440.6 c \\
10 & A & GF & 65.41 de & 58.70 k & 27.94 g & 3.727 hi & 4.029 a & 10.706 d & 455.0 ef \\
11 & P & GI & 50.80 b & 32.67 bc & 33.90 m & 1.275 abc & 6.341 d & 32.135 j & 477.5 j \\
12 & P & GI & 51.28 b & 31.67 ab & 36.22 p & 1.277 abc & 5.863 c & 31.166 j & 489.1 k \\
13 & P & GI & 68.19 erg & 44.19 g & 34.90 n & 2.173 de & 9.408 g & 16.165 e & 465.4 hi \\
14 & P & GI & 68.69 egh & 52.15 j & 30.39 k & 4.143 j & 11.042 i & 5.082 b & 449.5 de \\
15 & P & GI & 70.30 ghi & 39.04 e & 29.97 j & 4.536 j & 9.683 g & 18.918 fg & 448.6 d \\
16 & P & GF & 71.96 ghi & 52.44 j & 29.18 i & 1.827 cd & 10.707 i & 8.395 c & 466.3 hi \\
17 & P & GF & 72.20 hi & 62.75 l & 24.44 c & 5.315 k & 10.052 h & 1.635 a & 414.2 a \\
18 & P & GF & 64.97 de & 33.66 c & 49.84 r & 1.709 bcd & 13.707 l & 9.674 cd & 502.5 l \\
19 & P & GF & 63.36 d & 67.09 m & 28.10 h & 2.546 ef & 3.691 a & 4.798 b & 463.3 hi \\
20 & P & GF & 64.23 d & 62.95 l & 29.97 j & 3.086 fg & 5.370 b & 2.110 a & 475.2 j \\ \hline  & & & & & & & & \\ \hline  & & & & & & & & & \\ \multicolumn{6}{c}{Contrast} & & & & & & & \\ \multicolumn{6}{c}{Mean for A} & 64.21 a & 47.69 a & 28.75 a & 2.413 a & 7.888 a & 18.563 b & 452.1 a \\  & Mean for P & 64.60 a & 47.86 a & 32.69 b & 2.789 b & 8.586 b & 13.008 a & 465.1 b \\ \hline  & & & & & & & & \\ \multicolumn{6}{c}{Contrast} & & & & & & & \\ \multicolumn{6}{c}{Mean for GF} & 64.30 a & 54.82 b & 30.06 a & 2.616 a & 7.229 a & 10.189 a & 462.1 b \\ \multicolumn{6}{c}{Mean for GI} & 64.54 a & 40.73 a & 31.38 b & 2.586 a & 9.245 b & 21.382 b & 455.2 a \\ \hline  & & & & & & & & \\ \multicolumn{6}{c}{Recommended minimum level [33]} & & & & & & \\ \multicolumn{6}{c}{Adult dogs based on MER of 110 kcal/kg BW\({}^{0.75}\)} & 18.00 & 5.50 & & & & \\ \multicolumn{6}{c}{Growing dogs: early growth} & & & & & & \\ \multicolumn{6}{c}{(<14 weeks)} & & & & & & \\ \multicolumn{6}{c}{Growing dogs: late growth} & & & & & & \\ \multicolumn{6}{c}{(\geq\)14 weeks)} & & & & & & \\ \hline \multicolumn{6}{c}{DM—dry matter; CP—crude protein; EE—ethere extract; CF—crude fiber; CA—crude ash; NFE—nitrogen free extract; ME—metabolizable energy; MER—maintenance energy requirements; BW—body weight; A—food for adults dogs; P—food for puppies and growing dogs; GI—grain-included; and GF—grain-free. 1 Means with at least one same letter (a–) not differ statistically at \(p\) = 0.05 (for all columns separately).} \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Chemical composition (g/100 g DM) and energy value (kcal/100 g DM) of the analyzed commercial wet dog food 1. Significantly more ether extract, crude ash, and NFE were found in the grain-included products. The greatest amount of ether extract was found in grain-free adult dog food no 6 (43.46 g/100 g DM, Table 1), and the lowest amount in grain-free adult dog food no 9 (18.18 g/100 g DM). All the tested canned foods presented higher ether extract concentrations than the recommended minimum levels (5.50 g/100 g DM for adults and 8.5 g/100 g DM for growing dogs).