Ronozyme® WX contains xylanase. The product is authorised for use in the EU in poultry for fattening, piglets and pigs for fattening.

Ronozyme® WX is available both as a dry application (CT) (Powder) or as a liquid application (L) (Liquid)

Manufacturer´s main claims
Improves the digestibility of wheat, rye, triticale, barley and cereal by-products
Improves daily weight gain and feed conversion

Table 1. Technical specifications Ronozyme® WX (CT) (Powder)

EU category Zoo-technical additives
Functional group of additives Digestibility enhancer
Active substance endo-1,4-beta-xylanase (EC 3.2.1.8)
Xylanase activity in the product 1000 FXU / g
EU approval, minimum content Piglets: 200 FXU/kg feed
Pigs for fattening: 200 FXU/kg feed
Poultry for fattening: 100 FXU/kg feed
Lactating sows: 200 FXU/kg feed
Laying hens: 100 FXU/kg feed
End of period of EU authorisation Piglets and pigs for fattening: 4 January 2023
Poultry for fattening: 4 January 2023
Lactating sows: 30 July 2030
Laying hens: 5 August 2030
EU code 4a1607i
Recommended dosage (CT) Piglets: 200 - 400 g/tonne feed
Pigs for fattening: 200 g/tonne feed
Poultry for fattening: 100 - 200 g/tonne feed
Derived from microorganism Aspergillus oryzae (DSM 10287)
Product storage stability At a temperature of 25°C the product maintains its activity for at least 12 months from the date of manufacture
Storage stability in feed No significant losses were observed when feed supplemented with Ronozyme WX was stored at temperatures up to 25°C for three months
Heat stability More than 80% of the xylanase activity was left when the feed was pelleted at 95°C (Rasmussen, 2010)
Package size 20 kg multi-walled papersacks with plastic in-liner
Handling Avoid ingestion, inhalation of dust or direct contact by applying suitable protective measures and personal hygiene
Producer Novozymes

List of references

EFSA (2012). Scientific Opinion on the safety and efficacy of Ronozyme WX (endo-1,4-beta-xylanase) as a feed additive for poultry, piglets (weaned) and pigs for fattening. EFSA Journal 2012; 10(7):2790

EU (2012). Commission implementing Regulation (EU) No 1206/2012 of 14 December 2012 concerning the authorisation of a preparation of endo-1,4-beta-xylanase produced by Aspergillus oryzae (DSM 10287) as a feed additive for poultry for fattening, weaned piglets and pigs for fattening and amending Regulations (EC) No 1332/2004 and (EC) No 2036/2005 (holder of the authorisation DSM Nutritional Products). Official Journal of the European Union. L 347/12-14

EU (2020). Commission implementing Regulation (EU) No 2020/995 of 9 July 2020 concerning the authorisation of a preparation of endo-1,4-beta-xylanase produced by Aspergillus oryzae  (DSM 26372) as a feed additive for lactating sows (holder of authorisation DSM Nutritional Products Ltd represented by DSM Nutritional Products Sp. Z o.o). Official Journal of the European Union. L221/84-86

EU (2020). Commission implementing Regulation (EU) No 2020/1034 of 15 July 2020 concerning the authorisation of a preparation of endo-1,4-beta-xylanase produced by Aspergillus oryzae (DSM 26372) as a feed additive for laying hens (holder of authorisation DSM Nutritional Products Ltd represented by DSM Nutritional Products Sp.Z o.o). Official Journal of the European Union. L227/34-36

Rasmussen, D.K. (2010). Forskel i varmestabilitet for fytase- og xylanaseprodukter i foder. Videncenter for Svineproduktion. Meddelelse nr. 875