Table 4. Effect of dietary supplementation of Silybum marianum seed (SMS) extract on the fecal gas emission in weaned piglets1)
Items (ppm) | SMS extract (%) | SEM | p-value |
0 | 0.05 | 0.10 | Linear | Quadratic |
NH3 |
Day 1 | 1.50 | 1.50 | 1.00 | 0.312 | 0.286 | 0.529 |
Day 7 | 1.13 | 1.25 | 1.13 | 0.395 | 1.000 | 0.802 |
Day 21 | 1.88 | 1.63 | 1.38 | 0.410 | 0.411 | 1.000 |
Day 42 | 2.88 | 2.25 | 2.13 | 0.460 | 0.279 | 0.668 |
H2S |
Day 1 | 1.30 | 1.20 | 1.35 | 0.183 | 0.851 | 0.591 |
Day 7 | 1.65 | 1.48 | 1.63 | 0.134 | 0.898 | 0.348 |
Day 21 | 2.00 | 1.73 | 1.78 | 0.231 | 0.508 | 0.579 |
Day 42 | 2.28 | 2.30 | 2.10 | 0.171 | 0.487 | 0.603 |
R-SH |
Day 1 | 2.50 | 3.25 | 3.00 | 0.301 | 0.270 | 0.207 |
Day 7 | 3.13 | 3.25 | 3.50 | 0.232 | 0.283 | 0.831 |
Day 21 | 3.25 | 3.00 | 3.13 | 0.232 | 0.712 | 0.526 |
Day 42 | 3.75 | 3.00 | 3.38 | 0.331 | 0.443 | 0.198 |
Acetic acid |
Day 1 | 6.25 | 6.88 | 6.50 | 1.195 | 0.886 | 0.741 |
Day 7 | 7.63 | 7.13 | 7.25 | 1.249 | 0.837 | 0.843 |
Day 21 | 7.75 | 7.38 | 7.13 | 1.203 | 0.722 | 0.967 |
Day 42 | 7.75 | 7.63 | 7.50 | 1.142 | 0.880 | 1.000 |
CO2 |
Day 1 | 9,625.00 | 9,675.00 | 9,100.00 | 658.18 | 0.587 | 0.707 |
Day 7 | 9,850.00 | 9,250.00 | 9,850.00 | 487.34 | 1.000 | 0.341 |
Day 21 | 10,225.00 | 9,800.00 | 9,625.00 | 625.72 | 0.515 | 0.874 |
Day 42 | 9,775.00 | 10,100.00 | 10,050.00 | 516.33 | 0.715 | 0.774 |
Values represent the means of eight pens with 2 pigs per replicate pen (n = 16) per treatment.
NH3, ammonia; H2S, hydrogen sulfide; R-SH, methyl mercaptans; CO2, carbon dioxide.