欧盟评估一种β-甘露聚糖酶作为育肥鸡和育肥火鸡等物种饲料添加剂的安全性和有效性

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据了解，这种β-甘露聚糖酶由Thermothelomyces thermophilus DSM 33149产生。经过评估，专家小组无法就添加剂对目标物种和消费者的安全性得出结论，但被认为对环境是安全的。在建议的使用条件下该添加剂对育肥鸡具有潜在的有效性，并且该结论可以推广到育肥火鸡、育肥小型家禽物种和观赏鸟类。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 endo-1,4-β-d-mannanase produced by Thermothelomyces thermophilus DSM 33149 (Natupulse®TS/TS L) as a zootechnical feed additive for chickens and turkeys for fattening, minor poultry species for fattening and ornamental birds. The additive under assessment, Natupulse®TS/TS L, does not pose any safety concern regarding the production strain. The FEEDAP Panel concluded that the additive is tolerated by chickens for fattening, and this conclusion can be extrapolated to all poultry for fattening. Due to the lack of reliable data regarding the potential of the additive to induce chromosomal damage, the FEEDAP Panel cannot conclude on the safety of the additive for the target species and on the safety for consumer. The use of the additive in animal nutrition is considered safe for the environment. The additive is considered not to be irritant to the skin and eyes but is considered a respiratory sensitiser, although exposure by inhalation is unlikely. The Panel could not conclude on the potential of the additive to be a skin sensitiser. Due to the lack of reliable data, the FEEDAP Panel considered that a potential of the additive to induce chromosomal damage in exposed unprotected users cannot be excluded. Consequently, exposure of users should be minimised. The Panel concluded that the additive Natupulse®TS/TS L has the potential to be efficacious in chickens for fattening at the proposed conditions of use and this conclusion can be extrapolated to turkeys for fattening, minor poultry species for fattening and ornamental birds.