Table 5. Effects of single and complex probiotics supplementation on odorous gas emissions in growing-finishing pigs (Exp 1)
| Items (ppm) | CON1) | T1 | T2 | T3 | SE | p-value |
| 6 weeks |
| H2S | 5.47 | 5.32 | 5.42 | 5.23 | 0.180 | 0.788 |
| NH3 | 8.10 | 7.99 | 8.00 | 7.95 | 0.113 | 0.815 |
| CH3COOH | 3.11 | 3.09 | 3.10 | 3.06 | 0.049 | 0.888 |
| 13 weeks |
| H2S | 6.42a | 6.23ab | 6.31ab | 6.11b | 0.066 | 0.036 |
| NH3 | 9.35 | 9.24 | 9.27 | 9.21 | 0.083 | 0.685 |
| CH3COOH | 3.14 | 3.06 | 3.10 | 3.04 | 0.041 | 0.384 |
CON, basal diet; T1, CON + 0.2% Bacillus subtilis; T2, CON + 0.2% Saccharomyces cerevisiae; T3, CON + 0.2% Bacillus subtilis + 0.2% Saccharomyces cerevisiae.
Means in the same row with different letters indicate different significantly (p < 0.05).
H2S, hydrogen sulfide; NH3, ammonia; CH3COOH, acetic acid.