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. 2020 Apr 11;6(3):353–361. doi: 10.1016/j.aninu.2020.03.003

Table 4.

Mean values of pH, moisture, ash, nitrogen fractions and short chain fatty acids measured in the fecal samples during the study (data on fresh fecal matter).1

Item T0
 T15
 Time (T) Diet (D) T × D Mean MSE
B1 B2 CD B1 B2 CD
pH 6.53B 6.80A 6.39B 6.88A 6.42B 6.34B ns ns ∗∗∗ 6.57 0.05
Moisture, % 70.24 68.8 65.8 70.67 72.95 70.06 ns ns ns 69.89 0.79
Total N, % 1.25 1.36 1.33 1.31 1.08 1.26 ns ns ns 1.27 0.04
N–NH3, % 0.09 0.08 0.10a 0.08a 0.05b 0.09a ns ∗ ∗ 0.08 0
Ash, % 8.29 9.63 10.47 9.97 5.30 9.10 ns ns ns
N–NH3: N ratio 7.14 6.82 7.93 6.2 5.16 7.47 ns ns ns 6.8 0.36
Lactic, mmol/g 53.0A 28.7B 43.8B 39.0B 55.2A 39.1B ns ns ∗∗ 42.86 3.57
Acetic, mmol/g 143.1 120.8 92 124.2 105.9 93.5 ns ns ns 114.26 7.24
Propionic, mmol/g 104.5 90.7 76.2 84.8 82.1 93.8 ns ns ns 88.7 6.63
Isobutyric, mmol/g 13.4 11.5 5.4 7.3 4.4 4.5 ∗ ∗∗ ns 7.91 0.87
Butyric, mmol/g 32 26.8 21.1 32.8 20.3 22.5 ∗ ns ns 26.59 1.76
Isovaleric, mmol/g 0.6 0 0.3 1.6 0.5 0 ns ns ns 0.49 0.16
Valeric, mmol/g 0.8 0.6 0.2 0.7 0.4 0.6 ns ns ns 0.56 0.07
TA, mmol/g 347.4 279.2 238.9 290.3 268.8 254.0 ns ns ns 281.36 14.44
Lactic, % 16.5a 11.5b 18.1a 15.5a 23.5a 15.3b ns ns ∗ 16.54 1.4
Acetic, % 40 43.1 39.9 41.7 38.5 37.7 ns ns ns 40.24 1.1
Propionic, % 28.7 31.3 30.5 26.5 28.6 36.0 ns ns ns 30.09 1.17
Isobutyric, % 4.3 4.4 2.7 2.7 1.8 1.9 ns ∗ ns 3.01 0.35
Butyric, % 10.1 9.5 8.6 12.6 7.2 8.9 ∗ ns ns 9.73 0.58
Isovaleric, % 0.2 0 0.1 0.7 0.2 0 ns ns ns 0.2 0.07
Valeric, % 0.2 0.2 0.1 0.2 0.2 0.2 ns ns ns 0.2 0.02

MSE = mean square error of the model; N–NH3 = ammonia nitrogen; TA = total acids; ns = not significant.

∗, P < 0.05; ∗∗, P < 0.01; ∗∗∗, P < 0.001.

A, B On a same row, different superscripts denote differences between means for P < 0.01.

a, b On a same row, different superscripts denotes differences between means for P < 0.05.

1

CD, control diet, made with pasta and rice as main source of starch in a ratio 1:1 and raw meat; B1, diet with a complementary food made of rice as main source of starch and raw meat; B2, diet with a complementary food made of potato as main source of starch and raw meat; T0, beginning of the study (sampling time T0); T15, after 15 d of administration of experimental diets (sampling time T15).