Table 4. Effect of spraying anti-microbial agent on growing pig slurry pit

Items CON1) TRT SEM p-value
Initial (ppm)
 NH3 3.75 4.00 0.34 0.620
 H2S 0.48 0.45 0.14 0.874
 Methyl mercaptans 6.00 6.00 0.29 1
 Acetic acid 4.00 3.50 0.94 0.670
 CO2 3,400 3,425 217.00 0.913
Day 7 (ppm)
 NH3 4.25a 2.50b 0.41 0.003
 H2S 0.53a 0.35b 0.07 0.044
 Methyl mercaptans 6.50a 4.00b 0.58 0.002
 Acetic acid 4.25a 3.50b 0.53 0.046
 CO2 3,550a 2,775b 137.00 0.001
Day 14 (ppm)
 NH3 4.75a 2.50b 0.18 0.006
 H2S 0.53a 0.35b 0.02 0.003
 Methyl mercaptans 6.75a 3.75b 0.58 0.004
 Acetic acid 4.50a 3.25b 0.18 0.017
 CO2 3,575a 2,650b 88 0.000
Day 21 (ppm)
 NH3 4.75a 2.75b 0.29 0.011
 H2S 0.60a 0.40b 0.03 0.032
 Methyl mercaptans 6.75a 3.50b 0.34 0.016
 Acetic acid 4.75a 3.00b 0.34 0.026
 CO2 3,750a 2,775b 34.00 < 0.001
Day 28 (ppm)
 NH3 5.25a 2.75b 0.35 0.010
 H2S 0.63a 0.40b 0.04 0.003
 Methyl mercaptans 6.25a 3.25b 0.50 0.001
 Acetic acid 5.00a 2.75b 0.34 0.003
 CO2 3,800a 2,700b 129.00 0.001
Day 35 (ppm)
 NH3 5.00a 3.25b 0.18 < 0.001
 H2S 0.68a 0.43b 0.05 0.003
 Methyl mercaptans 6.50a 3.50b 0.29 0.005
 Acetic acid 5.00a 2.75b 0.34 0.011
 CO2 3,950a 2,800b 110 0.001
Day 42 (ppm)
 NH3 5.50a 3.50b 0.29 0.003
 H2S 0.73a 0.50b 0.03 0.003
 Methyl mercaptans 6.75a 3.50b 0.34 0.001
 Acetic acid 5.25a 2.50b 0.34 < 0.001
 CO2 4,075a 3,050b 109.00 0.009
CON and TRT pen of growing pig’s slurry pit were sprayed: Non-anti-microbial agent (NAMA, saline water) and anti-microbial agent (G-Fresh, 100 heads/1 kg mixed probiotics), respectively.
Means in the same row with different superscripts differ significantly (p < 0.05).