September 27, 2012
Adisseo's Rovabio® enzyme timely amid rising soymeal prices
Press release
With the strong uptrend of soy prices in recent months, degrading the non-starch polysaccharides (NSPs) in soymeal and increasing its nutritional values is increasingly important.
Soymeal, a source of protein and more than 25% of the total metabolisable energy in a broiler diet, is the most expensive feed ingredient of the three major raw materials in monogastric diets (with corn and wheat).
As NSP content of soybean meal is twice that of corn or wheat, the use of NSP enzymes on soymeal is crucial. To increase dry matter and energy digestibility of soybean, a wide range of enzymes are required, as NSP in soymeal are complex.
Aurélie Preynat, enzyme research manager of Adisseo, explains, "NSP in soybean meal can be divided into insoluble NSP, mainly cellulose, and soluble NSP, composed mainly of pectic polymers. The main feature is the high content of pectin, and in particular, rhamnogalacturonans which are very complex. They present specific structures composed of complex backbone of galacturonic acid and rhamnose, and a high number of substitutions. Therefore, a large spectrum of pectin degrading enzymes is needed to hydrolyse NSP from soybean meal."
In soymeal we also find hemicellulose-mainly galactomannans, of which the amount depends on soybean quality, at least four enzymes are necessary to break down such carbohydrates: α-galactosidase, β-mannanase, β-mannosidase, and acetyl mannan esterase.
"Rovabio® which contains a large number of fibre-degrading enzymes is particularly adapted to improve soybean meal nutritional values. Because Rovabio® is produced from a non-GMO fungus, it contains more than 200 proteins, with 19 identified as NSP degrading enzymes," Aurélie Preynat explains about Adisseo's Rovabio®.
Caroline Joos, regional technical manager in Central Europe, Adisseo calculates that, on a typical corn soy-based diet containing 60% of corn and 30% of soymeal, Rovabio® increases the energy level by 65kcal/kg, with about 50% coming from corn (3,400kcal/kg and + 1.5 %) and 50% from soybean meal (2,400 kcal/kg + 4.5%).
Improvement of metabolisable energy of soybean meal with Rovabio® has been demonstrated through several in vivo trials with various poultry species (broiler, layer, turkey, and duck) achieved in the Adisseo Research Centre in France (CERN).
Although animals naturally produce enough endogenous proteases to degrade the soymeal proteins, these endogenous proteases have difficult access to them when encapsulated by NSPs. Rovabio® enhances the access of proteases to soybean proteins, and leads to a better protein and amino acid availability.
The Adisseo Group is one of the world's largest manufacturers of nutritional solutions for animals. It is one of the main subsidiaries of China National Bluestar, a key player in the chemical industry in China.
