Table 4. Effects of spraying 1 litter of fulvic acid (0.02%) twice per week on reduction of malodor in nursery pig barns
1)
Item
Control
Fulvic acid
SEM
p
-value
Ammonia
13.21
11.34
-
-
Propionic acid
4.78
3.92
-
-
Butyric acid
4.65
4.21
-
-
I-Valeric acid
5.21
4.67
-
-
n-Valeric acid
4.69
4.23
-
-
Volatile organic compounds
8.21
6.74
-
-
Mean
6.79
5.85
0.17
0.012
The odors were measured by using gas chromatograph/flame ionization detector.