经过评估，专家小组得出结论，该添加剂在授权使用条件下对目标物种、消费者和环境都是安全的。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 assessment of the application for the renewal of the authorisation of l-tyrosine as a nutritio nal feed additive. The additive is authorised for use in all animal species (3c401). The applicant has provided evidence that the additive currently in the market complies with the existing co nditions of authorisation. The EFSA Panel on Additives and Products or Substances used in Animal Feed co ncluded that the use of the feed additive in animal nutrition remains safe for the target species, consumers, and the environment. As regards the safety for the user, l-tyrosine is not an irritant to skin or eyes. In the absence of data, the potential of l-tyrosine to be a dermal and respiratory sensitiser cannot be excluded. Exposure by inhalation of persons handling the additive is likely. The present application for renewal of the authorisation does not include any modification proposal that would have an impact on the efficacy of the additive and, therefore, there is no need for re-assessing the efficacy.

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