欧盟评估一种由内切-1,4-β-木聚糖酶和内切-1,3（4）-β-葡聚糖酶组成的添加剂作为断奶仔猪饲料添加剂的授权更新申请

 

　　据了解，添加剂中的内切-1,4-β-木聚糖酶是由里氏木霉MUCL 49755生产的，内切-1,3（4）-β-葡聚糖酶是由里氏木霉MUCL 49754生产的。

 

　　经过评估，专家小组得出结论，在建议的使用条件下，该添加剂对断奶仔猪、消费者和环境是安全的。在授权更新的情况下，无需评估添加剂的功效。部分原文报道如下：

 

　　Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of the feed additive consisting of endo-1,4-beta-xylanase (produced with Trichoderma reesei MUCL 49755) and endo-1,3(4)-beta-glucanase (produced with T. reesei MUCL 49754) (AveMix® XG 10/AveMix® XG 10 L) as a zootechnical feed additive for weaned and suckling piglets. The additive is already authorised for use in weaned piglets. This scientific opinion concerns the request for the renewal of the authorisation of the additive for weaned piglets and the extension of use to suckling piglets. The applicant declared a change in the carrier material used in AveMix® XG 10 from soybean meal to calcium carbonate + wheat flour or calcium carbonate + sepiolite. The applicant provided evidence that the additive AveMix® XG 10 with calcium carbonate + wheat flour and AveMix® XG 10 L comply with the conditions of the authorisation. The EFSA Panel on Additives and Products or Substances used in Animal FEED (FEEDAP) noted that no data were submitted to support compliance of the formulation of AveMix® XG 10 with calcium carbonate + sepiolite with the conditions of the authorisation. The FEEDAP Panel concluded that both formulations of the additive (powder and liquid) remain safe for the target species, consumers and the environment, and that the extension of use to suckling piglets would not affect these conclusions. AveMix® XG 10 formulated with calcium carbonate + sepiolite and AveMix® XG 10 L are not irritant to skin and eyes. No conclusions on the irritation potential of AveMix® XG 10 formulated with calcium carbonate + wheat flour could be drawn. The additive in all its formulations is considered a respiratory and skin sensitiser. There was no need for assessing the efficacy of the additive in the context of the renewal of the authorisation for weaned piglets. The Panel concluded that the additive is efficacious in suckling piglets at 4000 XU and 900 BGU/kg complete feed.

 

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