Table 4.
Mode of action and main effects of enzymes used in pig diets at finishing stage.
| Enzyme | Mode of Action | Main Effects | Reference |
|---|---|---|---|
| Mannanase | Improves ATTD of GE, N, DM and CP. | -Increased ADG, G: F, ADFI and blood glucose concentration. -Decreased fat thickness of rib number 10. |
Yoon et al., 2010; Cho & Kim, 2013; Kim et al., 2013 |
| Phytase | Improves digestibility of P. | -Increases ADG and Ca. -Decreased P excretion. |
Olukosi et al., 2007 |
| Protease | Improves AID of GE. ATTD of CP. | -Increases ADG and GE. -Decreases ADFI. Fecal ammonia emission. |
Olukosi et al., 2007; O'Shea et al., 2014; Choe et al., 2017; Lei et al., 2017 |
| Xylanase | Improves AID of GE. ATTD of GE, N and DM. Digestibility of P. | -Increases ADG and GE. -Decreases P excretion. Manure odor emissions. Fat thickness of rib number 10. |
Olukosi et al., 2007; Cho & Kim, 2013; O'Shea et al., 2014; Cho et al., 2017 |
| Amylase | Improves the digestibility of P. | -Increases ADG. | Olukosi et al., 2007 |
| Galactosidase | Improves ATTD of DM and N. | -Increases ADG. | Kim et al., 2013 |
AID: Apparent ileal digestibility; DM: Dry matter; GE: Gross energy; CP: Crude protein; ATTD: Apparent total tract digestibility; P: Phosphorus; ADG: Average daily weight gain; G:F: Feed gain; ADFI: Average daily feed intake; Ca: Calcium; N: Nitrogen.