据了解，该添加剂是由桔绿木霉DSM 34663生产的。经过评估，专家小组认为在建议的使用条件下该添加剂对目标物种、消费者和环境是安全的。评估小组认为，在建议的使用条件下，该添加剂有可能对所有禽类、观赏鸟类、所有生长中的猪科动物和鲤鱼有效。部分原文报道如下：

　　Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of a feed additive co ntaining endo-1,4-��-xylanase produced by Trichoderma citrinoviride DSM 34663 (Hostazym ?X). The product is authorised as a zootechnical additive (digestibility enhancers) for use in all poultry species for fattening, for laying and reared for laying, weaned piglets, pigs for fattening and carp. The current opinion co ncerns the request for the renewal of the authorisation for the use in those species/categories and the extension of use to all poultry species for breeding and reared for breeding, ornamental birds, suckling piglets and minor porcine species for fattening. The applicant provided evidence that the additive in the market complies with the co nditions of the authorisation. There is no new evidence that would lead the Panel to reco nsider previous co nclusions that the additive is safe for the target species, the co nsumers and the enviro nment under the authorised co nditions of use. This co nclusion also applies to the target species for which a request for extension of use is made. The additive is co nsidered not a skin corrosive or skin sensitiser, but it is an eye irritant. The Panel cannot co nclude on the potential of the additive to be a skin irritant. Due to the proteinaceous nature of the active substance, the additive is co nsidered a respiratory sensitiser. The Panel co nsiders that the additive has the potential to be efficacious in all poultry species, ornamental birds, all growing Suidae and carp at the proposed co nditions of use.

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