Table 7. Effects of probiotics supplementation on gas emissions in growing-finishing pigs manure compost (Exp 2)

Items, ppm	CON¹⁾	T1	T2	T3	T4	T5	T6	SE	p-value
1 week
H₂S	6.00	3.00	2.47	3.18	2.49	2.52	1.85	0.980	0.124
NH₃	16.64^a	8.83^b	6.24^bc	8.98^b	5.29^c	5.34^c	2.43^d	0.922	< 0.001
CH₃SH	2.86	1.45	1.24	1.53	1.30	1.31	0.99	0.504	0.232
4 weeks
H₂S	1.09	0.41	0.34	0.42	0.36	0.36	0.19	0.205	0.111
NH₃	5.05^a	2.17^b	1.67^b	2.34^b	1.92^b	1.99^b	0.80^c	0.212	< 0.001
CH₃SH	0.95	0.81	0.69	0.82	0.71	0.72	0.52	0.097	0.127
8 weeks
H₂S	0.30	0.15	0.12	0.16	0.13	0.12	0.09	0.059	0.289
NH₃	0.70	0.31	0.25	0.32	0.26	0.26	0.16	0.126	0.129
CH₃SH	0.11	0.07	0.05	0.08	0.07	0.07	0.03	0.198	0.243
12 weeks
H₂S	0.01	0.01	0.00	0.01	0.00	0.00	0.00	0.003	0.123
NH₃	0.02	0.01	0.00	0.13	0.01	0.01	0.00	0.004	0.156
CH₃SH	0.01	0.01	0.00	0.01	0.01	0.01	0.00	0.005	0.605

CON, normal compost without probiotics; T1, spray Bacillus subtilis 10 g per 3.306 m²; T2, spray Bacillus subtilis 40 g per 3.306 m²; T3, spray Saccharomyces cerevisiae 10 g per 3.306 m²; T4, spray Saccharomyces cerevisiae 40 g per 3.306 m²; T5, spray (Bacillus subtilis 5 g + Saccharomyces cerevisiae 5 g) per 3.306 m²; T6, spray (Bacillus subtilis 20g + Saccharomyces cerevisiae 20 g) per 3.306 m².
Means in the same row with different letters indicate different significantly (p < 0.05).
H₂S, hydrogen sulfide; NH₃, ammonia; CH₃SH, methyl mercaptan.