Preparation of endo-1,4-beta-xylanase, endo-1, 4-beta-glucanase and xyloglucan-specific endo-beta-1,4-glucanase

What it is. Enzyme preparation combining endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific endo-beta-1,4-glucanase, produced by fermentation with Trichoderma citrinoviride DSM 33578. The additive is presented in granulated or liquid form, with guaranteed minimum activities of 15,000 EPU/g, 1,000 CU/g and 1,000 XGU/g.

What it is for. Zootechnical additive from the digestibility enhancer functional group, intended to break down non-starch polysaccharides (arabinoxylans, cellulose, xyloglucans) in plant cell walls of feed. It is used in poultry (fattening, laying, breeding, ornamental birds) and in pigs, including sows, to improve digestibility of plant-based raw materials. An EFSA study examined the safety and efficacy of this type of preparation (Huvezym® neXo) in Suidae, though its findings do not constitute a dosage recommendation.

Points to watch. Minimum enzyme activity levels differ by species and animal category (poultry other than fattening/laying/breeding: 1,500 EPU, 100 CU, 100 XGU; porcine species other than sows: same levels; sows: identical levels under another regulation). Storage conditions and thermal processing stability must be specified in the instructions for use of the additive and premixtures. Respiratory and skin protective equipment is mandatory during handling where risks cannot be controlled through operational procedures.