Table 7.
Effect of Bacillus-based feed additive on manure production and concentration of ammonia gas in the manure of growing finishing pigs per head per day
| Item | CON1 | T11 | Difference | Reduction (%) |
|---|---|---|---|---|
| 6wk | ||||
| Manure (including 70% moisture, g/pig/d) | 1,311.76 | 1,167.74 | 144.02 | 10.98 |
| Average NH3 emission (ppm/300 g feces/d) | 33.85 | 29.825 | 4.03 | 11.89 |
| Average NH3 emission (ppm/pig/d) | 148.01 | 116.09 | 31.93 | 21.57 |
| 16 wk | ||||
| Manure (including 70% moisture, g/pig/d) | 1,979.50 | 1,746.62 | 232.88 | 11.76 |
| Average NH3 emission (ppm/300 g feces/d) | 35.6 | 28.925 | 6.68 | 18.75 |
| Average NH3 emission (ppm/pig/d) | 234.90 | 168.40 | 66.50 | 28.31 |
1
CON, basal diet; T1, basal diet+62.5 ppm microbial feed additive.