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. 2023 Sep 29;101:skad332. doi: 10.1093/jas/skad332

Table 7.

Change from baseline fecal characteristics and metabolites of overweight cats during weight loss

△wk0-wk4 △wk0-wk8 △wk0-wk12 △wk0-wk16 △wk0-wk20 △wk0-wk24 P-value
Variables FT2 OR2 FT2 OR2 FT2 OR2 FT2 OR2 FT2 OR2 FT2 OR2 SEM3 Diet Week Diet*wk
Fecal score −0.27 −0.41 −0.27 −0.55 −0.14 −0.59 −0.05 −0.27 −0.14 −0.36 −0.05 −0.32 0.19 0.2437 0.1875 0.8448
Fecal pH 0.09 0.80 0.51 0.93 0.54 0.90 0.54 1.02 0.42 1.06 0.39 1.02 0.29 0.0505 0.7060 0.8053
Fecal DM −0.194 3.46 5.30 4.66 3.83 6.02 2.74 1.88 3.78 4.75 4.09 1.92 1.89 0.7936 0.3954 N/A4
μmol/g (DMB)
Total SCFA1 −141 −234 −246 −231 −252 −251 −116 −142 −197 −185 −253 −227 48.3 0.8457 0.0023 0.4971
 Acetate −86.8 −124 −139 −127 −145 −146 −54.9 −69.2 −113 −100 −142 −122 30.0 0.9665 0.0018 0.7615
 Propionate −45.6 −93.4 −96.9 −92.0 −93.8 −92.7 −53.6 −71.3 −75.9 −76.2 −96.6 −93.7 18.0 0.6421 0.0239 0.2317
 Butyrate −8.53 −15.9 −10.1 −11.9 −13.1 −12.5 −7.17 −1.22 −8.70 −8.81 −14.2 −11.0 4.22 0.9855 0.0073 0.1579
Total BCFA1 −0.32 −3.22 1.50 −1.80 −1.97 −5.03 1.37 −0.04 −1.49 −4.29 −2.71 −4.19 2.01 0.4391 0.0670 N/A4
 Isobutyrate −0.56 −0.71 1.30 0.49 −0.61 −0.83 0.14 0.64 −0.83 −0.93 −1.54 −0.99 0.63 0.8413 0.0020 N/A4
 Isovalerate 0.38 −1.20 0.13 −1.12 −1.28 −2.07 0.96 1.31 −0.33 −0.93 −0.81 −0.82 1.06 0.7813 0.1532 N/A4
 Valerate −0.15 −1.31 0.07 −1.17 −0.08 −2.13 0.26 −1.99 −0.33 −2.43 −0.35 −2.39 0.88 0.0373 0.0206 0.5117
Ammonia 1.81 −16.0 −12.9 −5.66 −20.6 −17.7 −12.49 −8.86 −25.3 −24.7 −32.6 −27.0 10.08 0.8147 0.1052 N/A4
Total P/I1 3.82 7.35 −2.10 −2.01 −2.35 −2.42 −1.94 −1.42 −1.99 −1.20 −1.74 −1.90 1.52 0.7209 <0.0001 N/A4
 Phenol 0.45 0.70 −0.40 −0.20 −0.47 −0.29 −0.32 −0.14 −0.54 −0.12 −0.43 −0.16 0.22 0.1497 <0.0001 N/A4
 Indole 2.83 4.46 −0.42 −0.54 −0.63 −0.43 −0.75 −0.29 −0.94 −0.19 −0.66 −0.43 0.86 0.3847 <0.0001 N/A4

1SCFA, short-chain fatty acids; BCFA, branched-chain fatty acids; P/I, phenol/indole.

2FT, Fit & Trim (Orijen; Champion Petfoods, Edmonton, Canada); OR, Original (Orijen; Champion Petfoods, Edmonton, Canada).

3SEM, pooled standard error of the means.

4N/A, Wilcoxon signed ranks test; no interaction effect between diet and week.