Under the condition of 37°C and pH 5.5, the amount of enzyme required to release 1 μmol of reducing sugars from a mannan solution at a concentration of 3 mg/mL per minute is defined as one enzyme activity unit (U).

It can degrade mannan, reduce the viscosity of chyme, promote the digestion and absorption of nutrients, and improve the nutritional value of feed.

The degradation product of mannan is mannan oligosaccharide, which can reduce the colonization of pathogenic bacteria in the intestine and protect the integrity of intestinal mucosa.

Based on the specification of 30,000 U/g, 50-100 g of this product is added to each ton of compound feed.