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. 2023 Jan 21;10(2):79. doi: 10.3390/vetsci10020079

Table 9.

Effects of dietary complex probiotic supplementation on fecal gas emissions in growing pigs.

Item, ppm	Probiotics (% of Diet)				p-Value
Item, ppm	0 (CON)	0.05	0.1	0.2	CON vs. Probiotics	Linear	Quadratic
Day 14
Methyl mercaptans	4.72 ± 0.11	4.74 ± 0.17	4.84 ± 0.18	4.82 ± 0.19	0.697	0.634	0.837
NH₃	4.00 ± 0.13 ^a	3.62 ± 0.14 ^ab	3.38 ± 0.17 ^b	3.43 ± 0.15 ^ab	0.007	0.010	0.703
H₂S	2.75 ± 0.11 ^a	2.71 ± 0.10 ^a	2.42 ± 0.14 ^ab	2.20 ± 0.14 ^b	0.074	0.086	0.432
Acetic acid	6.88 ± 0.19	6.79 ± 0.23	6.68 ± 0.20	6.74 ± 0.26	0.589	0.562	0.988
CO₂	10,813 ± 226	10,953 ± 211	10,848 ± 355	10,969 ± 326	0.751	0.935	0.751
Day 28
Methyl mercaptans	4.97 ± 0.23	5.13 ± 0.19	5.00 ± 0.25	5.05 ± 0.26	0.750	0.933	0.640
NH₃	4.16 ± 0.14 ^a	4.05 ± 0.11 ^a	3.47 ± 0.14 ^b	3.36 ± 0.14 ^b	0.010	0.002	0.184
H₂S	3.06 ± 0.14 ^a	2.99 ± 0.13 ^ab	2.51 ± 0.11 ^b	2.50 ± 0.12 ^b	0.031	0.025	0.269
Acetic acid	7.37 ± 0.26	7.48 ± 0.25	7.39 ± 0.22	7.33 ± 0.29	0.932	0.972	0.768
CO₂	12,591 ± 243	12,700 ± 258	12,716 ± 330	12,575 ± 291	0.832	0.772	0.902

Note. a, b Means in the same row with different superscripts differ significantly (p < 0.05).